Journal articles on the topic 'Particulate matter emission'
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Guo, Dongdong, Hongyuan Wei, Yong Guo, Chuanqi Wang, and Zenghui Yin. "Non-exhaust particulate matter emission from vehicles: A review." E3S Web of Conferences 268 (2021): 01015. http://dx.doi.org/10.1051/e3sconf/202126801015.
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According to the source, particulate matter produced during vehicle driving can be divided into exhaust emission and non-exhaust emission. Exhaust emission includes exhaust pipe emission and crankcase emission, while non-exhaust emission includes brake wear, tire wear, road wear and road dust. For a long time, it has been considered that the particulate matter pollution of motor vehicles mainly comes from exhaust emissions, and the control of particulate matter pollution in various countries is mainly concentrated in the tail gas. However, with the continuous tightening of emission standards, the emission of particulate matter has been reduced, but also makes the environmental pollution of non-exhaust particulate matter increasingly prominent. This paper summarizes the research on vehicle non-exhaust particulate matter emissions, aiming to emphasize the importance of non-exhaust particulate matter emissions and the necessity of legislation, so as to reduce their contribution to environmental particulate matter concentration.
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Danciulescu, Valeriu, Luoana Florentina Pascu, Mihaela Petrescu, Andreea Cozea, Raluca Diodiu, Gheorghita Tanase, and Maria Pasca. "The influence of emission sources on particulate matter pollution in adjacent areas." SIMI 2019, SIMI 2019 (September 20, 2019): 253–58. http://dx.doi.org/10.21698/simi.2019.fp33.
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Particulates generated by anthropogenic activities are found in the ambient air in varying amounts, in a wide range of sizes and in a wide variety of chemical composition. The concentration of particulates at one site, as well as their composition, are influenced by their origin and dispersion factors. By chemical and dimensional analysis of particulates in an area, we can draw preliminary conclusions about the origin and level of pollution in that area. This paper presents the results obtained by concomitant monitoring of particulates emissions and the concentration of particulate matter in ambient air in the adjacent area of an industrial plant. The result of the measurements obtained and their correlation with the specific conditions during the monitoring period lead us to the conclusion that the concentration of particulate matter at the emission sources directly influences the concentrations of particulate matter in the neighbouring area.
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Štěrba, Jaroslav, and Jakub Hospodka. "Airport Emissions of Particulate Matter." MAD - Magazine of Aviation Development 1, no. 3 (May 15, 2013): 9. http://dx.doi.org/10.14311/mad.2013.03.02.
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This article presents an overview and results of research of Airport Emissions of Particulate Matter (AEoPM). The AEoPM thesis creates an environment for summarizing local airport particulate matter emissions, for evaluating their contribution to overall local air pollution and for comparing the relative contributions to overall particulate matter emissions from each individual source of emission. The study researches the situation at Hradec Králové regional airport and then applies this gathered data to the airport‘s surrounding area. Next it poses the question: Is it appropriate to restrict Hradec Králové Airport’s operations when emission limits are breached? The answer is then found and presented in this article. Last but not least, the study deals with other local industry sources of particulate matter emissions in the monitored area and also compares the typical flight activity to the road activity one commonly used in the area.
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Shimazu, Haruki. "Airborne Particulate Matter from Sparkling Fireworks." Environment and Pollution 6, no. 1 (March 31, 2017): 19. http://dx.doi.org/10.5539/ep.v6n1p19.
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The present study examines the emission levels of particulate matters (PM) from sparkling fireworks and to know the emission characteristics of PM. Particulate matter <2.5 microns (PM2.5) and suspended particulate matter (SPM) were determined while burning six brands of sparkling fireworks. The average PM concentrations before burning were levels of 10 μg/m3, but the average concentrations after burning were 741 μg/m3 for PM2.5 and 810 μg/m3 for SPM. The mean ratio of the concentrations of PM2.5 and SPM after burning in all of the sparkling fireworks was 0.890. The emissions per firework ranged from 6.5 mg to 151 mg for PM2.5, and from 7.1 mg to 160 mg for SPM. The means of the emissions per combustible amount of the firework ranged from 0.017 to 0.066 mg/mg for PM2.5, and from 0.018 to 0.071 mg/mg for SPM. The influences of the burning time, burning rate and combustible amount of the fireworks on the PM emissions were investigated. As a result, PM2.5 and SPM emissions tend to increase with the burning rates. This suggests that the burning rate of firework have an influence on the PM emissions.
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Bebkiewicz, Katarzyna, Zdzisław Chłopek, Hubert Sar, Krystian Szczepański, and Magdalena Zimakowska-Laskowska. "Assessment of Environmental Risks of Particulate Matter Emissions from Road Transport Based on the Emission Inventory." Applied Sciences 11, no. 13 (June 30, 2021): 6123. http://dx.doi.org/10.3390/app11136123.
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The aim of this study is to investigate the environmental hazards posed by solid particles resulting from road transport. To achieve this, a methodology used to inventory pollutant emissions was used in accordance with the recommendations of the EMEP/EEA (European Monitoring and Evaluation Programme/European Economic Area). This paper classifies particulates derived from road transport with reference to their properties and sources of origin. The legal status of environmental protection against particulate matter is presented. The emissions of particulate matter with different properties from different road transport sources is examined based on the results of Poland’s inventory of pollutant emissions in the year 2018. This study was performed using areas with characteristic traffic conditions: inside and outside cities, as well as on highways and expressways. The effects of vehicles were classified according to Euro emissions standards into the categories relating to the emissions of different particulate matter types. The results obtained showed that technological progress in the automobile sector has largely contributed to a reduction in particulate matter emissions associated with engine exhaust gases, and that this has had slight effect on particulate matter emissions associated with the tribological processes of vehicles. The conclusion formed is that it is advisable to undertake work towards the control and reduction of road transport particulate matter emissions associated with the sources other than engine exhaust gases.
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Weise, DR, DE Ward, TE Paysen, and AL Koonce. "Burning California Chaparral - an Exploratory Study of Some Common Shrubs and Their Combustion Characteristics." International Journal of Wildland Fire 1, no. 3 (1991): 153. http://dx.doi.org/10.1071/wf9910153.
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Prescribed fire is a tool used to manage vegetation in southern California. The nature and quan tity of gaseous and particulate emissions have not been described for California chaparral. A study examining carbon monoxide (CO), carbon dioxide (CO2), and par ticulate matter emissions from fuel beds constructed from common chaparral shrubs was initiated. Chamise (Adenostoma fasciculatum), ceanothus (Ceanothus crassifolius), manzanita (Arctostaphylos glandulosa), and scrub oak (Quercus dumosa) fuel beds were burned in December 1989, and March, May, and August, 1990. Gas and particulate matter samples were collected from 45 fires. Emission factors for CO2 and particulate matter were affected by species and month individually; month and species interacted and affected CO emission factors. Pearson's correlation coefficient and Kendall's tau indi cated that emission factors for CO and particulate matter were inversely related to combustion efficiency.
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Li, Mengying, Shaocai Yu, Xue Chen, Zhen Li, Yibo Zhang, Zhe Song, Weiping Liu, et al. "Impacts of condensable particulate matter on atmospheric organic aerosols and fine particulate matter (PM2.5) in China." Atmospheric Chemistry and Physics 22, no. 17 (September 13, 2022): 11845–66. http://dx.doi.org/10.5194/acp-22-11845-2022.
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Abstract. Condensable particulate matter (CPM) emitted from stationary combustion and mobile sources exhibits high emissions and a large proportion of organic components. However, CPM is not generally measured when conducting emission surveys of PM in most countries, including China. Consequently, previous emission inventories have not included emission rates for CPM. Here, we construct an emission inventory of CPM in China with a focus on organic aerosols (OAs) based on collected CPM emission information. Results show that OA emissions are enhanced twofold after the inclusion of CPM in a new inventory for China for the years 2014 and 2017. Considering organic CPM emissions and model representations of secondary OA (SOA) formation from CPM, a series of sensitivity cases have been simulated here using the three-dimensional Community Multiscale Air Quality (CMAQ) model to estimate the contributions of CPM emissions to atmospheric OA and fine PM (PM2.5, particulate matter with aerodynamic diameter not exceeding 2.5 µm) concentrations in China. Compared with observations at a Beijing site during a haze episode from 14 October to 14 November 2014, estimates of the temporal average primary OA (POA) and SOA concentrations were greatly improved after including the CPM effects. These scenarios demonstrated the significant contributions of CPM emissions from stationary combustion and mobile sources to the POA (51 %–85 %), SOA (42 %–58 %), and total OA concentrations (45 %–75 %). Furthermore, the contributions of CPM emissions to total OA concentrations were demonstrated over the 2 major cities and 26 other cities of the Beijing–Tianjin–Hebei region (hereafter referred to as the “BTH2 + 26 cities”) in December 2018, with average contributions of up to 49 %, 53 %, 54 %, and 50 % for Handan, Shijiazhuang, Xingtai, and Dezhou, respectively. Correspondingly, the inclusion of CPM emissions also narrowed the gap between simulated and observed PM2.5 concentrations over the BTH2 + 26 cities. These results improve the simulation performance of atmospheric OA and PM2.5 and may also provide important implications for the sources of OA.
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Kim, Hyunsik, Sungho Tae, and Jihwan Yang. "Calculation Methods of Emission Factors and Emissions of Fugitive Particulate Matter in South Korean Construction Sites." Sustainability 12, no. 23 (November 24, 2020): 9802. http://dx.doi.org/10.3390/su12239802.
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Recently, efforts to effectively reduce particulate matter by identifying its sources and trends have become necessary due to the sustained damage it has caused in East Asia. In the case of South Korea, damage due to fugitive dust generated at construction sites in densely populated downtown areas is significant, and particulate matter in such fugitive dust directly influences the health of nearby residents and construction workers. Accordingly, the purpose of the present study was to develop a method for calculating emission factors for PM10 and PM2.5 emission amounts in the fugitive dust generated in construction sites and to derive emission amount trends for major variables to predict the amounts of generated particulate matter. To this end, South Korean emission factors for PM10 and PM2.5 for different construction equipment and activities that generate fugitive dust were derived and a method for calculating the amount of particulate matter using the derived emission factors was proposed. In addition, the calculated total emissions using these factors were compared to those calculated using construction site fugitive dust equations developed for the United States, Europe, and South Korea, and the trend analysis of total emissions according to the major emission factor variables was conducted.
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Shancita, I., H. H. Masjuki, and M. A. Kalam. "Particulate Matter Emission Characteristics of a Biodiesel Fueled Engine at Idling Speed." Journal of Clean Energy Technologies 5, no. 1 (2017): 1–6. http://dx.doi.org/10.18178/jocet.2017.5.1.334.
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Zhao, Yujiao, Mengyao Wang, Pengfei Tao, Guozhi Qiu, and Xueying Lu. "Emission Characteristics of Particulate Matter from Boiling Food." Atmosphere 14, no. 1 (January 12, 2023): 167. http://dx.doi.org/10.3390/atmos14010167.
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Cooking food in water or soup, such as hot pot, is a widely used cooking method in China. This type of cooking requires no oil and cooks at a lower temperature, but that does not mean it produces fewer pollutants or is less harmful. There are few research studies on the emission characteristics and mechanisms of particulate matter emissions when eating hot pot (the boiling process), which leads to the unreasonable design of ventilation systems for this kind of catering. In this paper, the effects of boiling different ingredients (including noodles, potatoes, fish, tofu, meatballs, and pork) on particle number concentration emissions were studied. The particle number concentration and particle size distribution of PM with diameters of 0.3 μm and less, 0.3–0.5 μm and 0.5–1.0 μm (PM0.3, PM0.3–0.5 and PM0.5–1.0, respectively) were measured in an experimental chamber. The food type and shape showed very little change in the PM emission characteristics of boiling. When the boiling state was reached, the number concentration, particle size distribution, and arithmetic mean diameter of particles all fluctuated within 60 s. The emission characteristics of particles produced by boiling water and heating oil were compared. Heating oil produced more small particles, and boiling water released more large particles. Transient and steady methods were used to calculate the emission rate of particles, and the steady-state calculation has a high estimation of the emission rate.
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Gong, Jing, Yingjia Zhang, Chenglong Tang, and Zuohua Huang. "Emission characteristics of iso-propanol/gasoline blends in a spark-ignition engine combined with exhaust gas re-circulation." Thermal Science 18, no. 1 (2014): 269–77. http://dx.doi.org/10.2298/tsci130131086g.
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Experiments were carried out in a spark-ignition engine fueled with iso-propanol/gasoline blends. Emission characteristics of this engine were investigated experimentally, including gaseous emissions (HC, CO, NOx) and particulate matter emission in term of number and size distributions. The effects of different iso-propanol percentages, loads and exhaust gas recirculation rates on emissions were analyzed. Results show that the introduction of exhaust gas recirculation reduces the NOx emission and NOx emission gives the highest value at full load condition. HC and CO emissions present inconspicuous variations at all the loads except the load of 10%. Additionally, HC emission shows a sharp increase for pure propanol when the exhaust gas recirculation rate is up to 5%, while little variation is observed at lager exhaust gas recirculation rates. Moreover, the particulate matter number concentration increases monotonically with the increase of load and the decrease of exhaust gas recirculation rate. There exists a critical spark timing that produces the highest particulate matter number concentration at all the blending ratios.
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Roman, Monika, Michał Roman, and Kamil Krzysztof Roman. "Spatial differentiation of particulates emission resulting from agricultural production in Poland." Agricultural Economics (Zemědělská ekonomika) 65, No. 8 (August 26, 2019): 375–84. http://dx.doi.org/10.17221/337/2018-agricecon.
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The article presents the spatial differentiation of particulates emission resulting from agricultural production in Poland. Some indicators of emission have been verified and adjusted to the Polish conditions. The paper estimates PM2.5 (particulate matter, aerodynamic diameter less than 2.5 µm) and PM10 (particulate matter, aerodynamic diameter less than 10 µm) emission resulting from agricultural production and agricultural soil. The findings of the research conducted by the Institute of Ecology of Industrial Areas in Katowice in cooperation with the Institute for Chemical Processing of Coal in Zabrze were the main source of those alterations. Data concerning particular sources of emission also come from the information provided by the Central Statistical Office in Warsaw, the Bank of Local Data 2017. The estimation of PM2.5 and PM10 emission was conducted based on the structure of sources of emission resulting from agriculture contained in “EMEP/EEA Emission Inventory Guidebook” in accordance with the Tier 2 method.
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Yang, Huan, Xuan Song, Liping Du, Qi Zhang, Jian Cui, and Shasha Yin. "Estimating Particulate Matter Emission from Dust Sources Using ZY-3 Data and GIS Technology—A Case Study in Zhengzhou City, China." Atmosphere 12, no. 6 (May 21, 2021): 660. http://dx.doi.org/10.3390/atmos12060660.
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With the rapid development of the social economy in China, numerous Chinese cities are facing high levels of particulate matter (PM) pollution problems. In this study, high-resolution ZY-3 images and GIS techniques were used to establish the emission inventory of total suspended particle (TSP), particulate matter 10 (PM10) and particulate matter 2.5 (PM2.5) from fugitive dust sources in May 2016, and a spatial grid of 3 km × 3 km resolution was established to demonstrate the spatial distribution of PM emission. Results showed that the total emissions of TSP, PM10 and PM2.5 in Zhengzhou city were 237.5 kt·a−1, 103.7 kt·a−1 and 22.4 kt·a−1, respectively. Construction dust source was the main fugitive dust emission source in Zhengzhou city—the TSP, PM10 and PM2.5 emission of which account for 76.42%, 89.68% and 88.39%, respectively, of the total emission, followed by road dust source and soil dust source. PM emission was higher in Zhongyuan, Huiji, Jinshui and Zhengdong New District, while Zhongmou, Xingyang, Dengfeng and other remote areas had low PM emissions. Compared to other Chinese cities or regions, the PM emission from the construction dust source was at a high level in Zhengzhou city, while the PM emissions from the soil dust source and road dust source were at moderate levels.
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Matuszewska, Anna, Małgorzata Odziemkowska, and Joanna Czarnocka. "Emisja zanieczyszczeń przy zasilaniu silnika ZS olejem napędowym z domieszką bioetanolu." Studia Ecologiae et Bioethicae 11, no. 2 (June 30, 2013): 139–46. http://dx.doi.org/10.21697/seb.2013.11.2.08.
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Bioethanol is an oxygen compound added to gasoline. Research into the possibility of applying it to diesel oil is conducted. It is assumed that such fuel could help reduce the emission of gaseous and particulate matter in comparison with conventional fuels. This paper presents the results of the authors’ chassis dynamometer test for biofuel containing 15% bioethanol. Emissions of carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons (THC), and particulate matters (PM) were related to diesel oil emissions.
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Dong, Rui, Zhiqing Zhang, Yanshuai Ye, Huiqiong Huang, and Chao Cao. "Review of Particle Filters for Internal Combustion Engines." Processes 10, no. 5 (May 17, 2022): 993. http://dx.doi.org/10.3390/pr10050993.
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Diesel engines have gradually become one of the main forces in the human transportation industry because of their high efficiency, good durability, and stable operation. However, compared with gasoline vehicles, the high emission of diesel vehicles forces manufacturers to introduce new pollutant control technologies. Although the particulate matter emissions of gasoline vehicles are lower than that of diesel vehicles, with the popularity of gasoline vehicles and the continuous rise of power, the impact of these particles on the environment cannot be ignored. Therefore, diesel particulate filters and gasoline particulate filters have been invented to collect the fine particles in the exhaust gas to protect the environment and meet increasingly stringent emission regulations. This paper summarizes the research progress on diesel particulate filters and gasoline particulate filters at present and comprehensively introduces the diesel particulate filter and gasoline particulate filter from the mechanism, composition, and operation processes. Additionally, the laws and regulations of various countries and the impact of gas waste particulates on the human body are described. In addition, the mechanisms of the diesel particulate filter, gasoline particulate filter, and regeneration were studied. Finally, the prospects and future directions for the development of particle filters for internal combustion engines are presented.
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Owen, Bethan, Julien G. Anet, Nicolas Bertier, Simon Christie, Michele Cremaschi, Stijn Dellaert, Jacinta Edebeli, et al. "Review: Particulate Matter Emissions from Aircraft." Atmosphere 13, no. 8 (August 3, 2022): 1230. http://dx.doi.org/10.3390/atmos13081230.
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The contribution of aircraft operations to ambient ultrafine particle (UFP) concentration at and around airports can be significant. This review article considers the volatile and non-volatile elements of particulate matter emissions from aircraft engines, their characteristics and quantification and identifies gaps in knowledge. The current state of the art emission inventory methods and dispersion modelling approaches are reviewed and areas for improvement and research needs are identified. Quantification of engine non-volatile particulate matter (nvPM) is improving as measured certification data for the landing and take-off cycle are becoming available. Further work is needed: to better estimate nvPM emissions during the full-flight; to estimate non-regulated (smaller) engines; and to better estimate the emissions and evolution of volatile particles (vPM) in the aircraft exhaust plume. Dispersion modelling improvements are also needed to better address vPM. As the emissions inventory data for both vPM and nvPM from aircraft sources improve, better estimates of the contribution of aircraft engine emissions to ambient particulate concentrations will be possible.
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Saraswati Rudianto, Ines. "Characteristics of Particulate Emissions from Co-Firing in An Industrial Boiler." Jurnal Ecolab 15, no. 1 (May 1, 2021): 23–29. http://dx.doi.org/10.20886/jklh.15.1.23-29.
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Characteristics of Particulate Emissions from Co-Firing in An Industrial Boiler. PT. X is a textile industry that consumes a massive amount of coal for its boiler operation. It requires substantial costs to obtain coal from Sumatra and Kalimantan. An alternative solid biofuel (briquette) was developed to combine bottom ash and biomass made from municipal solid waste called Biomass Coal Fuel (BCF) briquette. The purpose of this study is to measure the total concentration of particulate matter and emission factor (PM) emitted from two burning experiments: only coal (100%) and mixed coal fuel with 10% of BCF (co-firing). Mixed coal and BCF burning are carried out in the fire-tube boiler where the PM emission is released through the stack. The Center for Pulp and Paper measured particulate emission with methodology referring to SNI 7117.17-2009. Particulate matter concentration emitted from only coal-burning was 12,1 mg/Nm3,but when mixed BCF and coal were used, the higher concentration was emitted 70,9 mg/Nm3. The addition of BCF briquettes affects the particulate matter emission, even though the emission does not exceed the regulated quality standard. The increase of particulate concentration is due to the BCF briquette characteristics, which have a low heating value and high ash content. The boiler has already been equipped with cyclone and wet scrubber; therefore, PM emissions presented here are treated emissions. The controlled PM emission factor of BCF was 4,46 g/kg, which is higher than only coal which was 0,51 g/kg. BCF briquette can still be used as co-fuel for the boiler, but further effort is still required to reduce the ash content of the BCF and increase the calorific value of the BCF.
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Petrovic, Velimir. "Particulate matters from diesel engine exhaust emission." Thermal Science 12, no. 2 (2008): 183–98. http://dx.doi.org/10.2298/tsci0802183p.
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Air pollution caused by diesel engine emissions, especially particulate matters and nitric oxides emissions, is one of the biggest problems of current transportation. In the near future the emission of diesel particulate matters will become one of the most important factors that will affect the trend of engine development. Ambient airborne particles have adverse environmental and health effects and therefore their concentration in the air is regulated. Recent medical studies showed that different particle properties are important (for example: number/concentration, active surface, chemical composition/morphology) and may take role in the responsibility for their human health impact. Thus, diesel engines are one of the most important sources of particles in the atmosphere, especially in urban areas. Studying health effects and diesel engine particulate properties, it has been concluded that they are a complex mixture of solids and liquids. Biological activity of particulate matter may be related to particle sizes and their number. The paper presents the activities of UN-ECE working group PMP on defining the best procedure and methodology for the measurement of passenger cars diesel engines particle mass and number concentrations. The results of inter-laboratory emissions testing are presented for different engine technologies with special attention on repeatability and reproducibility of measured data. .
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Kim, Hyunsik, and Sungho Tae. "Evaluation Model for Particulate Matter Emissions in Korean Construction Sites." Sustainability 13, no. 20 (October 15, 2021): 11428. http://dx.doi.org/10.3390/su132011428.
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Particulate matter (PM) has caused serious environmental issues in Asia, and various policies for systematic management of PM based on evaluation of the characteristics of emissions are being discussed. In Korea, where the damage of PM from construction sites is severe, only regulatory policies according to the concentration are being implemented; however, there is no policy for the quantitative management of PM. Therefore, this study aimed to derive and propose an emission evaluation model to be used for the establishment of management policies for construction site PM emissions in South Korea by assuming structures as manufactured products. Therefore, this study derived a method of calculating the PM10, PM2.5, NOx, SOx, and VOCs emission factors for each type of equipment in construction sites and then estimated annual total emissions. In addition, this paper put forth a method for offsetting emission permission standards as the criteria for evaluating the adequacy of the estimated emissions. Finally, a model algorithm was proposed for evaluating emissions in advance during the construction planning phase by comparing the PM10, PM2.5, NOx, SOx, and VOCs emissions in construction sites with established standards; the supplementary point of the algorithm is discussed for further studies.
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Ge, Peng. "Wood Smoke Impact on Particulate Matter (PM)." Advanced Materials Research 881-883 (January 2014): 9–12. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.9.
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The emission factors and emission profiles of wood combustion tracers of different wood types were assessed. Emission profiles are additionally assessed for two advanced oven/boiler types. The emission profiles and emission ratios of wood smoke tracers to the PM emission of wood fires for the major tree species were established. From this a wood smoke profile will be derived which will be used to assess the impact of wood smoke to selected PM10 and PM2.5 sampling sites. Furthermore, using the energy-normalised PM mass emission data from different types of wood combustion appliances PM reduction scenarios will be assessed with the goal of a sustainable use of wood or wood-based fuels.
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Lavoué, David, Sunling Gong, and Brian J. Stocks. "Modelling emissions from Canadian wildfires: a case study of the 2002 Quebec fires." International Journal of Wildland Fire 16, no. 6 (2007): 649. http://dx.doi.org/10.1071/wf06091.
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The present paper proposes an original approach to estimate gaseous and particulate emissions from boreal forest fires based on the Canadian Forest Fire Behaviour Prediction (FBP) System. The FBP System permits calculation of fuel consumption and rate of spread for individual fires on an hourly basis from meteorological conditions and fuel patterns. Weather data are obtained by running the Canadian weather forecast model GEM (Global Environmental Multiscale). Hourly emission point sources can then be generated from a given wildfire database. The smoke emission model was first applied to the boreal forest fires in Quebec in the summer of 2002. Geographical distribution and temporal variability of emission amounts, as well as injection heights, were assessed hourly. In July, ~150 wildfires released 39 Mt of CO2 equivalent of greenhouse gases and 470 kt of fine particulate matter to the atmosphere. They contributed 32 and 5% of Quebec’s and Canada’s annual greenhouse gas emissions, respectively. Black carbon was estimated to account for 4% of the total fine particulate matter. Wildfires were responsible for 51 and 90% of all Canada’s black carbon and particulate organic matter sources, respectively.
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Dragičević, Viktor, Marina Levak, Anton Turk, and Ivan Lorencin. "Ship production processes air emissions analysis." Pomorstvo 36, no. 1 (June 30, 2022): 164–71. http://dx.doi.org/10.31217/p.36.1.19.
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Compliance with modern environmental norms and regulations is an increasingly important requirement in the shipbuilding process of ship design and construction. Related to the ship production process, volatile organic compounds (VOCs), nitric oxides and particulate matter are the main emissions of harmful gases in the shipyard. This paper analyzes air emissions from the ship production process in a shipyard. Air emissions are quantified from either in-situ measurements from emission sources, or by materials that are used in the shipbuilding process, and the acquired data from those measurements is calculated as yearly emissions. Emission quantities of VOCs, nitric oxides, carbon dioxide, carbon monoxide and particulates are analyzed regarding possible reduction techniques considering efficiency and investment costs for using these methods. In conclusion, the best available and feasible emission reduction methods are suggested, and a suggestion for achieving the goal of a net zero emission shipyard.
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Klimont, Zbigniew, Kaarle Kupiainen, Chris Heyes, Pallav Purohit, Janusz Cofala, Peter Rafaj, Jens Borken-Kleefeld, and Wolfgang Schöpp. "Global anthropogenic emissions of particulate matter including black carbon." Atmospheric Chemistry and Physics 17, no. 14 (July 17, 2017): 8681–723. http://dx.doi.org/10.5194/acp-17-8681-2017.
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Abstract. This paper presents a comprehensive assessment of historical (1990–2010) global anthropogenic particulate matter (PM) emissions including the consistent and harmonized calculation of mass-based size distribution (PM1, PM2. 5, PM10), as well as primary carbonaceous aerosols including black carbon (BC) and organic carbon (OC). The estimates were developed with the integrated assessment model GAINS, where source- and region-specific technology characteristics are explicitly included. This assessment includes a number of previously unaccounted or often misallocated emission sources, i.e. kerosene lamps, gas flaring, diesel generators, refuse burning; some of them were reported in the past for selected regions or in the context of a particular pollutant or sector but not included as part of a total estimate. Spatially, emissions were calculated for 172 source regions (as well as international shipping), presented for 25 global regions, and allocated to 0.5° × 0.5° longitude–latitude grids. No independent estimates of emissions from forest fires and savannah burning are provided and neither windblown dust nor unpaved roads emissions are included. We estimate that global emissions of PM have not changed significantly between 1990 and 2010, showing a strong decoupling from the global increase in energy consumption and, consequently, CO2 emissions, but there are significantly different regional trends, with a particularly strong increase in East Asia and Africa and a strong decline in Europe, North America, and the Pacific region. This in turn resulted in important changes in the spatial pattern of PM burden, e.g. European, North American, and Pacific contributions to global emissions dropped from nearly 30 % in 1990 to well below 15 % in 2010, while Asia's contribution grew from just over 50 % to nearly two-thirds of the global total in 2010. For all PM species considered, Asian sources represented over 60 % of the global anthropogenic total, and residential combustion was the most important sector, contributing about 60 % for BC and OC, 45 % for PM2. 5, and less than 40 % for PM10, where large combustion sources and industrial processes are equally important. Global anthropogenic emissions of BC were estimated at about 6.6 and 7.2 Tg in 2000 and 2010, respectively, and represent about 15 % of PM2. 5 but for some sources reach nearly 50 %, i.e. for the transport sector. Our global BC numbers are higher than previously published owing primarily to the inclusion of new sources. This PM estimate fills the gap in emission data and emission source characterization required in air quality and climate modelling studies and health impact assessments at a regional and global level, as it includes both carbonaceous and non-carbonaceous constituents of primary particulate matter emissions. The developed emission dataset has been used in several regional and global atmospheric transport and climate model simulations within the ECLIPSE (Evaluating the Climate and Air Quality Impacts of Short-Lived Pollutants) project and beyond, serves better parameterization of the global integrated assessment models with respect to representation of black carbon and organic carbon emissions, and built a basis for recently published global particulate number estimates.
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Simões Amaral, Simone, João Andrade de Carvalho, Maria Martins Costa, and Cleverson Pinheiro. "Particulate Matter Emission Factors for Biomass Combustion." Atmosphere 7, no. 11 (October 31, 2016): 141. http://dx.doi.org/10.3390/atmos7110141.
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Lu, Mei Fang, Mei Chuan Huang, Kuang Hung Cheng, and Jim Jui Min Lin. "Size and Composition of Ambient Particulates in the Yueguangshan-Tunnel, Taiwan." Advanced Materials Research 726-731 (August 2013): 2074–78. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.2074.
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The aim of this study is to investigate the characteristics of size distribution and chemical composition of ambient particulates inside a tunnel. Inside the tunnel, the average concentration of PM2.5and PM2.5-10was 479 and 444 μg/m3respectively. The average mass-size distribution showed a trimodal distribution (25-30, 4.0-5.0, and 2.5, PM2.5-10, and PM>10were 25%, 40%, and 35% of the total suspended particulates. Because of the poor air ventilation inside the tunnel, the particulates accumulate inside the tunnel. The dominated species of PM2.5were EC (average concentration 122.91 μg/m3, 25.78%), OC (47.68 μg/m3, 10.53%), SO42-(37.42 μg/m3, 8.24%), and NO3-(35.01 μg/m3, 7.95%), and were EC ( 131.77 μg/m3, 29.87%), OC (53.74 μg/m3, 12.15%), SO42-(31.35 μg/m3, 7.11%), and NO3-(28.10 μg/m3, 6.42%) for PM2.5-10. Results from this study showed that the concentrations of coarse particulate matter and several metals are apparently dominated by re-suspended matter rather than emissions from vehicles, e.g., Al, Ca, and Fe. Therefore, ambient particulate matter is caused by not only vehicle exhaust emission but also dusty roads and traffic-generated dust.
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Jasiński, Remigiusz, Marta Galant-Gołębiewska, Mateusz Nowak, Karolina Kurtyka, Paula Kurzawska, Marta Maciejewska, and Monika Ginter. "Emissions and Concentrations of Particulate Matter in Poznan Compared with Other Polish and European Cities." Atmosphere 12, no. 5 (April 22, 2021): 533. http://dx.doi.org/10.3390/atmos12050533.
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It is estimated that the excessive emission of airborne particulate matter shortens the life expectancy of a European city inhabitant by up to eight months. The conducted comparison shows the emission and concentration of PM10 in Poznan against the supra-regional background. The purpose of the comparison with similar area and population cities is to identify the position of the Poznan agglomeration in terms of particulate matter emissions. The main sources are: original research, PM official measuring stations’ data, and the relevant organizations’ reports. On the basis of the conducted comparison, it can be concluded that Wroclaw and Poznan achieve very similar results in terms of emissions. Cracow, on the other hand, as a city where for several years there have been significant problems with the phenomenon of smog and excessive emission of particulate matter, reaches extremely different values compared to Poznan. The article presents also the air quality in Poznan and other Polish and European cities. There were also measurements of PM mass and number conducted in Poznan. The results show that there is a significant difference between the air quality measured at official measuring stations (only some of them are measuring PMs at all) and that measured with portable equipment in different parts of the city.
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Xia, Haibin, Hui Wang, and Guangxing Ji. "Regional Inequality and Influencing Factors of Primary PM Emissions in the Yangtze River Delta, China." Sustainability 11, no. 8 (April 15, 2019): 2269. http://dx.doi.org/10.3390/su11082269.
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In recent years, haze pollution has become more and more serious in the Yangtze River Delta (YRD). However, the impact mechanism of socio-economic factors on primary particulate matter (PM) emissions remains unclear. Based on the provincial primary PM emission data in the YRD from 1995 to 2014, this paper used Slope, Theil index, and Stochastic Impacts by Regression on Population, Affluence, and Technology (STIAPAT) models to quantitatively identify the regional differences of primary PM emissions and explore the key influencing factors. The results showed that primary fine particulate matter (PM2.5), inhalable particulate (PM10), and total suspended particulate (TSP) emissions all featured an upward trend of fluctuation over the study period. The regional differences in primary TSP emissions in the YRD region was gradually shrinking and the regional differences of primary PM2.5 and PM10 emissions presented a rising trend of fluctuation. The estimated coefficient of population size, energy structure, and fixed assets investment (FAI) were all significantly positive at the level of 1%. The negative effect of economic growth on energy PM emissions was significant under the level of 1%. The increase of foreign direct investment (FDI) had different effects on primary PM2.5, PM10, and TSP emissions. In addition, the influence of energy intensity on primary PM emission from energy consumption are mainly negative but not significant even under the level of 10%. These conclusions have guiding significance for the formulation of PM emission reduction policy without affecting YRD’s economic development.
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Cataluña, Renato, and Rosangela da Silva. "Effect of Cetane Number on Specific Fuel Consumption and Particulate Matter and Unburned Hydrocarbon Emissions from Diesel Engines." Journal of Combustion 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/738940.
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This paper discusses the effect of ignition delay time in diesel engines on the formation of particulate matter, using fuel formulations with different sulfur concentrations from various sources. Our findings indicate that the cetane number has a significant influence on particulate matter emissions, especially in engines with mechanical fuel injection. The maximum pressure in the combustion chamber increases as the cetane number increases, favoring the increase in the cracking reactions of high molecular weight fractions remaining in the liquid state and thus increasing the production of particulate matter. In certain conditions, this increase in pressure has a beneficial effect on the thermal efficiency of the cycle. Higher temperatures in the combustion chamber augment the speed of oxidation, reducing unburned hydrocarbon emissions. The ignition delay time of fuel has a strong effect on the formation of particulate matter and on the emission of unburned hydrocarbons.
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Yang, Wu, Deepak Pudasainee, Rajender Gupta, Wei Li, Ben Wang, and Lushi Sun. "Particulate matter emission during municipal solid waste combustion: Submicron particulates formation mechanism." Fuel 310 (February 2022): 122271. http://dx.doi.org/10.1016/j.fuel.2021.122271.
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Huboyo, Haryono S., and Sudarno Sudarno. "Analysis of Particulates and SO2 Removal from Coal Combustion Emissions Using Cyclone and Wet Scrubber With Textile Wastewater Feed." TEKNIK 41, no. 3 (November 30, 2020): 239–45. http://dx.doi.org/10.14710/teknik.v41i3.33883.
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Reuse of wastewater in the industry is mostly accomplished for watering plants. In a closed cycle, however, industrial wastewater can be returned through treatment to save water usage. This study aims to analyze textile wastewater's ability to be used as scrubbing liquid in the SO2 gas and particulate removal from coal combustion using a packed wet scrubber. Usually, the textile industry uses boiler fueled by coal and discharging base/alkaline wastewater. The method is carried out experimentally using a prototype device using a combination of cyclone and scrubber, with a source of coal combustion gas emissions. We did experiments using textile wastewater four times and two times using clean water as a control. We monitor the SO2, particulate emission in the gas stream, and pH, sulfate levels, and TSS levels in collected wastewater according to SNI. SO2 gas and particulates from coal combustion will be absorbed by the scrubber's wastewater spray so that SO2 will dissolve into sulfate, particulate matter into TSS. The study results using textile wastewater showed the removal efficiency of particulates on cyclone by 34-78%. The removal efficiency of SO2 on wet scrubber was only 24.7%. There was an increase in TSS levels after passing through the scrubber by 46%. The rise in TSS and sulfate concentrations in the wastewater indicates the absorption of SO2 and particulates into wastewater. Based on this result, we can use textile wastewater for controlling the emission of SO2 and particulate from coal combustion by feeding it for the scrubber. However, the efficiency of this process is not optimal.
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Guo, Xiurong, Khanh Hop Ha, and Danfeng Du. "Atmospheric Pressure Plasma for Diesel Particulate Matter Treatment: A Review." Catalysts 11, no. 1 (December 29, 2020): 29. http://dx.doi.org/10.3390/catal11010029.
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The purification of diesel exhaust gas is of great importance to prevent the atmospheric emission of major pollutants such as diesel particulate matter and nitrogen oxides and meet the environmental regulations. The atmospheric-pressure plasma is attracting increasing interest and is a promising after-treatment technology for purifying diesel emission at low temperatures. However, when compared with the numerous publications on nitrogen oxides reduction by non-thermal plasma, using non-thermal plasma to particulate matter treatment have relatively limited. This work provides a comprehensive review of the plasma applications for diesel particulate matter treatment, including self-regenerating diesel particulate filter, diesel particulate matter removal, and simultaneous removal of diesel particulate matter and nitrogen oxides. The treatment of particulate matter from both simulated particulate matter sources and actual diesel engines also discussed in this comprehensive review. The challenge to this technology is limited energy consumption for plasma, which should be less than 5% (~30 J/L) of the overall fuel consumption. Until now, the atmospheric-pressure plasma has been no commercial implementation in diesel exhaust gas treatment, so more research is needed to be done in this field.
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Xing, Zhenyu, and Ke Du. "Particulate matter emissions over the oil sands regions in Alberta, Canada." Environmental Reviews 25, no. 4 (December 2017): 432–43. http://dx.doi.org/10.1139/er-2016-0112.
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Particulate matter (PM) emissions from the expanded oil sands development in Alberta are becoming a focus among the aerosol science community because of its significant negative impact on the regional air quality and climate change. Open-pit mining, petroleum coke (petcoke) dust, and the transportation of oil sands and waste materials by heavy-duty trucks on unpaved roads could release PM into the air. Incomplete combustion of fossil fuels by engines and stationary boilers leads to the formation of carbonaceous aerosols. In addition, wildfire and biogenic emissions surrounding the oil sands regions also have the potential to contribute primary PM to the ambient air. Secondary organic aerosol formation has been revealed as an important source of PM over nearby and distant areas from the oil sands regions. This review summarizes the primary PM sources and some secondary aerosol formation mechanisms that are linked to oil sands development. It also reviews the approaches that can be applied in aerosol source apportionment. Meteorological condition is an important factor that may influence the primary PM emission and secondary aerosol formation in Alberta’s oil sands regions. Current concern should not be limited to the primary emission of atmospheric PM. Secondary formation of aerosols, especially secondary organic aerosol originating from photochemical reaction, should also be taken into consideration. To obtain a more comprehensive understanding of the sources and amount of PM emissions based on the bottom-up emission inventory approach, investigations on how to reduce the uncertainty in determination of real-world PM emission factors for the variable sources are needed. Long-range transport trajectories of fine PM from Alberta’s oil sands regions remain unknown.
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Viskup, Richard, Christoph Wolf, and Werner Baumgartner. "Qualitative and Quantitative Characterisation of Minor Chemical Elements in Diesel Particulate Matter by Laser-Induced Breakdown Spectroscopy." Proceedings 67, no. 1 (November 9, 2020): 6. http://dx.doi.org/10.3390/asec2020-07520.
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In this research, we investigate the minor chemical elements contained in the diesel particulate matter (DPM) exhaust emissions, generated by in-use diesel engine passenger vehicles. For this purpose, we apply a high-resolution optical emission spectroscopy technique, for precise spectrochemical analysis of diesel particulate matter. By means of laser-induced breakdown spectroscopy (LIBS) analytical method, we qualitatively and quantitatively characterise detected minor chemical elements in DPM. Particulate matter samples were obtained from in-use diesel engine passenger vehicles of diverse types and models from major brand car producers in Europe. We analysed particulate matter, extracted from the exhaust manifold part, from vehicles, which are used in daily life environment. The LIBS technique has revealed the presence of minor chemical elements in DPM -silicon, nickel, titan, potassium, strontium, and molybdenum with diverse concentrations.
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Ubanwa, B., A. Burnette, S. Kishan, and S. G. Fritz,. "Exhaust Particulate Matter Emission Factors and Deterioration Rate for In-Use Motor Vehicles." Journal of Engineering for Gas Turbines and Power 125, no. 2 (April 1, 2003): 513–23. http://dx.doi.org/10.1115/1.1559904.
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Recent measurements and modeling of primary exhaust particulate matter (PM) emissions from both gasoline and diesel-powered motor vehicles suggest that many vehicles produce PM at rates substantially higher than assumed in the current EPA PM emission factor model, known as “PART5.” The discrepancy between actual versus modeled PM emissions is generally attributed to inadequate emissions data and outdated assumptions in the PART5 model. This paper presents a study with the objective of developing an in-house tool (a modified PART5 model) for the Texas Natural Resource Conservation Commission (TNRCC) to use for estimating motor vehicle exhaust PM emissions in Texas. The work included chassis dynamometer emissions testing on several heavy-duty diesel vehicles at the Southwest Research Institute (SwRI), analysis of the exhaust PM emissions and other regulated pollutants (i.e., HC,CO,NOx), review of related studies and exhaust PM emission data obtained from literature of similar types of light and heavy-duty vehicle tests, a review of the current PART5 model, and analysis of the associated emission deterioration rates. Exhaust PM emissions data obtained from the vehicle testing at SwRI and other similar studies (covering a relatively large number and wide range of vehicles) were merged, and finally, used to modify the PART5 model. The modified model, which was named PART5-TX1, was then used to estimate new exhaust PM emission factors for in-use motor vehicles. Modifications to the model are briefly described, along with emissions test results from the heavy-duty diesel-powered vehicles tested at SwRI. Readers interested in a detailed understanding of the techniques used to modify the PART5 model are referred to the final project report to TNRCC (Eastern Research Group 2000).
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Hu, Fei, Bin Cheng, and Lingjuan Wang-Li. "Characteristics of Particulate Matter Emissions from Swine and Poultry Production Houses in the United States." Transactions of the ASABE 64, no. 5 (2021): 1569–79. http://dx.doi.org/10.13031/trans.14622.
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HighlightsParticulate matter (PM) data were analyzed to identify PM emission characteristics among different animal types.The PM concentrations were higher in broiler chicken and swine farrowing houses and were higher in winter.The PM emissions were also higher in broiler chicken houses and swine farrowing rooms.The PM in the layer chicken house in Indiana had narrower distributions with a greater percentage of smaller particles.Abstract. Understanding the characteristics of particulate matter (PM) emissions from animal feeding operations (AFOs) is essential to address the associated health and environmental impacts and to develop control strategies to mitigate such impacts. This article reports a study of PM concentrations and emission characteristics from 26 poultry and swine production houses to investigate the similarities and differences in PM emission characteristics, e.g., concentrations, emission rates, and particle size distribution (PSD), among different animal and housing types. Concentration and emission data for PM2.5, PM10, and total suspended particulates (TSP) collected by the National Air Emission Monitoring Study (NAEMS) were used to compare the differences among different production practices and animal types. The PSDs of the PM were examined based on the PM2.5/PM10 and PM10/TSP emission rate ratios. It was discovered that the concentrations of PM varied among animal types. For poultry, the concentrations of PM were higher in broiler houses than in other poultry houses. For swine, the average concentrations of PM were higher in farrowing rooms than in swine barns. Moreover, the PM concentrations in poultry and swine houses exhibited significant seasonal trends, with higher concentrations in winter and lower concentrations in summer, which were in a reverse relationship with ventilation rates. The PM emissions also varied among animal types. For poultry, the PM emissions were significantly higher for poultry production houses in California. For swine, the PM emissions were significantly higher for farrowing rooms than other swine houses. The PSD of PM varied among animal types, with mass median diameters (MMD) in the ranges of 6.51 to 13.62 µm for poultry houses and 7.94 to 17.19 µm for swine houses. The geometric standard deviations (GSD) were in the ranges of 1.66 to 2.71 and 1.65 to 2.9 for poultry and swine PM, respectively. The PM in the layer house in Indiana had a narrower distribution (smaller GSD) with a greater percentage of smaller particles than the other poultry houses, while the PM in the broiler house in California had a broader distribution (larger GSD) than the other poultry houses. For swine, the PM in the sow barn in North Carolina had a narrower distribution (smaller GSD) than the other swine houses, while the PM in the farrowing houses in Oklahoma had a broader distribution (larger GSD) than the other swine houses. The knowledge gained from this research may provide insights for addressing the PM emissions from various animal production systems. Keywords: Concentration and emission, Particulate matter, PM2.5, PM10, Poultry, swine, PSD, TSP.
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Lee, Pius, Jeffery McQueen, Ivanka Stajner, Jianping Huang, Li Pan, Daniel Tong, Hyuncheol Kim, et al. "NAQFC Developmental Forecast Guidance for Fine Particulate Matter (PM2.5)." Weather and Forecasting 32, no. 1 (February 1, 2017): 343–60. http://dx.doi.org/10.1175/waf-d-15-0163.1.
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Abstract The National Air Quality Forecasting Capability (NAQFC) upgraded its modeling system that provides developmental numerical predictions of particulate matter smaller than 2.5 μm in diameter (PM2.5) in January 2015. The issuance of PM2.5 forecast guidance has become more punctual and reliable because developmental PM2.5 predictions are provided from the same system that produces operational ozone predictions on the National Centers for Environmental Prediction (NCEP) supercomputers. There were three major upgrades in January 2015: 1) incorporation of real-time intermittent sources for particles emitted from wildfires and windblown dust originating within the NAQFC domain, 2) suppression of fugitive dust emissions from snow- and/or ice-covered terrain, and 3) a shorter life cycle for organic nitrate in the gaseous-phase chemical mechanism. In May 2015 a further upgrade for emission sources was included using the U.S. Environmental Protection Agency’s (EPA) 2011 National Emission Inventory (NEI). Emissions for ocean-going ships and on-road mobile sources will continue to rely on NEI 2005. Incremental tests and evaluations of these upgrades were performed over multiple seasons. They were verified against the EPA’s AIRNow surface monitoring network for air pollutants. Impacts of the three upgrades on the prediction of surface PM2.5 concentrations show large regional variability: the inclusion of windblown dust emissions in May 2014 improved PM2.5 predictions over the western states and the suppression of fugitive dust in January 2015 reduced PM2.5 bias by 52%, from 6.5 to 3.1 μg m−3 against a monthly average of 9.4 μg m−3 for the north-central United States.
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Panainte Lehadus, Mirela, Valentin Nedeff, Narcis Barsan, Andrei Victor Sandu, Emilian Mosnegutu, Claudia Tomozei, Oana Irimia, Gabriela Andrioai, and Ion Sandu. "Monitoring the Particulate Matter (PM10) Emissions from Bacau City Termo-Energetic Industry." Revista de Chimie 70, no. 8 (September 15, 2019): 2869–72. http://dx.doi.org/10.37358/rc.19.8.7446.
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Air pollution is one of the major environmental problems with short, medium and long-term effects. Substances emitted into the atmosphere (CO2, SO2, NOx, PM10) contribute to the amplification of the effects of climate change, acidification, air quality deterioration. The most important sources of PM10 emissions come from commercial, institutional and household sectors, industrial processes, road transport and agriculture. In order to protect the atmosphere and improve air quality, are needed measures of control at pollutant emissions. Early pollution reduction actions have led to a significant decrease of PM10 emissions especially from the production and distribution of energy, combustion processes and road transport has significantly diminished. Improving air quality requires continuous monitoring of emissions and, in particular emissions of particulate matter/ PM10. The paper presents the results of the monitoring activity of particulate matter/ PM10 from the thermo-energetic industry. The results of the monitoring include the particulate matter/ PM10 values in the range (68.083 mg/Nm3 - 93.166 mg/Nm3), values that do not exceed the emission limit values.
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Gibe, Hezron P., and Mylene G. Cayetano. "Spatial estimation of air PM<sub>2.5</sub> emissions using activity data, local emission factors and land cover derived from satellite imagery." Atmospheric Measurement Techniques 10, no. 9 (September 11, 2017): 3313–23. http://dx.doi.org/10.5194/amt-10-3313-2017.
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Abstract. Exposure to particulate matter (PM) is a serious environmental problem in many urban areas on Earth. In the Philippines, most existing studies and emission inventories have mainly focused on point and mobile sources, while research involving human exposures to particulate pollutants is rare. This paper presents a method for estimating the amount of fine particulate (PM2.5) emissions in a test study site in the city of Cabanatuan, Nueva Ecija, in the Philippines, by utilizing local emission factors, regionally procured data, and land cover/land use (activity data) interpreted from satellite imagery. Geographic information system (GIS) software was used to map the estimated emissions in the study area. The present results suggest that vehicular emissions from motorcycles and tricycles, as well as fuels used by households (charcoal) and burning of agricultural waste, largely contribute to PM2.5 emissions in Cabanatuan. Overall, the method used in this study can be applied in other small urbanizing cities, as long as on-site specific activity, emission factor, and satellite-imaged land cover data are available.
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Feißel, Toni, Florian Büchner, Miles Kunze, Jonas Rost, Valentin Ivanov, Klaus Augsburg, David Hesse, and Sebastian Gramstat. "Methodology for Virtual Prediction of Vehicle-Related Particle Emissions and Their Influence on Ambient PM10 in an Urban Environment." Atmosphere 13, no. 11 (November 18, 2022): 1924. http://dx.doi.org/10.3390/atmos13111924.
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As a result of rising environmental awareness, vehicle-related emissions such as particulate matter are subject to increasing criticism. The air pollution in urban areas is especially linked to health risks. The connection between vehicle-related particle emissions and ambient air quality is highly complex. Therefore, a methodology is presented to evaluate the influence of different vehicle-related sources such as exhaust particles, brake wear and tire and road wear particles (TRWP) on ambient particulate matter (PM). In a first step, particle measurements were conducted based on field trials with an instrumented vehicle to determine the main influence parameters for each emission source. Afterwards, a simplified approach for a qualitative prediction of vehicle-related particle emissions is derived. In a next step, a virtual inner-city scenario is set up. This includes a vehicle simulation environment for predicting the local emission hot spots as well as a computational fluid dynamics model (CFD) to account for particle dispersion in the environment. This methodology allows for the investigation of emissions pathways from the point of generation up to the point of their emission potential.
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Kumar, Atul, Tomesh Kumar Sahu, and Pravesh Chandra Shukla. "Design and fabrication of a partial flow dilution tunnel for particulate mass sampling in an ethanol blended CI engine." IOP Conference Series: Earth and Environmental Science 1042, no. 1 (July 1, 2022): 012006. http://dx.doi.org/10.1088/1755-1315/1042/1/012006.
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Abstract Diesel engine is mostly preferred engine especially for heavy duty work, as it delivers high efficiency, durability and low operating cost. Oxides of nitrogen (NOx) and particulate matter (PM) are the main emission components emitted from these diesel engines. Alcohols or biodiesels blending with mineral diesel are known to reduce the NOx and PM emissions. Ethanol fuel contains 35% (m/m) of oxygen, which helps to minimise the smoke and PM emissions. The primary objective of this work is to in-house design and fabricate a partial flow dilution tunnel for PM sampling on substrates. Ethanol blends (E05 and E10; v/v) were tested for Particulate matter collection for a twin cylinder CRDI Compression Ignition Engine. Ethanol blends showed 33% reduction in PM emission compared to mineral diesel.
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Zhang, Ziwei, Bing Zhao, Haigang Wang, Baozhu Zhou, Qi Zhao, Libin Dong, Xukai Li, et al. "Study on the condensable particulate matter removal characteristics of air pollution control devices in a Chinese ultra-low emission coal-fired generating unit." Journal of Physics: Conference Series 2247, no. 1 (April 1, 2022): 012018. http://dx.doi.org/10.1088/1742-6596/2247/1/012018.
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Abstract Condensable particulate matter (CPM) belongs to PM25. In addition, it is one of PM2.5 main contributors. But CPM emissions are often overlooked in coal-fired power plants. As a result, this paper studies the removal characteristics of (CPM) from air pollution control devices (APCDs) in a Chinese ultra-low emission coal-fired generating unit. The quality and content of flue gas particles, including CPM and filterable particulate matter (FPM), were measured at four points: the selective catalytic reduction (SCR) input, air preheater (APH) inlet, electric precipitator (ESP) outlet, and wet flue gas desulphurization (WFGD) outlet. The removal characteristics of each APCD were studied. Within the scope of this study, it is found that: ® CPM emission concentration accounts for 94.9% of total particle emission concentration, and is higher than the ultra-low particulate matter outflow guidelines for coal-fired power plants in China; ©WFGD has the highest CPM inorganic component removal radio of 97.02%, and ESP has the highest CPM organic component removal radio of 58.46%, among APCDs; ©SO4 2−, NH4 +, F−, and Cl− are the most abundant water-soluble ions in CPM.
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Nakajima, Yasuharu. "Measurement Method and Emission Characteristics of Particulate Matter." Journal of The Japan Institute of Marine Engineering 37, no. 1 (2002): 40–48. http://dx.doi.org/10.5988/jime.37.40.
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Jasiński, Remigiusz, Jacek Pielecha, and Jarosław Markowski. "Emission of particulate matter during aircraft landing operation." E3S Web of Conferences 10 (2016): 00030. http://dx.doi.org/10.1051/e3sconf/20161000030.
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Rui, Ma, and Yao Shengzhuo. "Analysis of engine particulate matter emission testing equipment." MATEC Web of Conferences 31 (2015): 03015. http://dx.doi.org/10.1051/matecconf/20153103015.
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Elbert, W., P. E. Taylor, M. O. Andreae, and U. Pöschl. "Contribution of fungi to primary biogenic aerosols in the atmosphere: active discharge of spores, carbohydrates, and inorganic ions by Asco- and Basidiomycota." Atmospheric Chemistry and Physics Discussions 6, no. 6 (November 15, 2006): 11317–55. http://dx.doi.org/10.5194/acpd-6-11317-2006.
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Abstract. Spores and related chemical compounds from actively spore-discharging Ascomycota (AAM) and actively spore-discharging Basidiomycota (ABM) are primary biogenic components of air particulate matter (characteristic size range 1–10 μm). Measurement results and budget calculations based on investigations in Amazonia (Balbina, Brazil, July 2001) indicate that the forcible discharge of fungal spores may account for a large proportion of coarse air particulate matter in tropical rainforest regions during the wet season. For the particle diameter range of 1–10 μm, the estimated proportions are ~25% during day-time, ~45% at night, and ~35% on average. For the sugar alcohol, mannitol, the budget calculations indicate that it is suitable for use as a molecular tracer for actively discharged basidiospores (ABS), and that the literature-derived emission ratio of about 5 pg per ABS may be taken as a representative average. ABM emissions may account for most of the atmospheric abundance of mannitol, and can explain the observed diurnal cycle (higher abundance at night). ABM emissions of hexose carbohydrates might also account for a significant proportion of glucose and fructose in air particulate matter, but the literature-derived ratios are not consistent with the observed diurnal cycle (lower abundance at night). AAM emissions appear to account for a large proportion of potassium in air particulate matter over tropical rainforest regions during the wet season, and they can also explain the observed diurnal cycle (higher abundance at night). The results of our investigations and budget calculations for tropical rainforest aerosols are consistent with measurements performed at other locations. Based on the average abundance of mannitol in particulate matter, which is consistent with the above emission ratio and the observed abundance of ABS, we have also calculated a value of ~17 Tg yr−1 as a first estimate for the global average emission rate of ABS over land surfaces. Comparisons with estimated rates of emission and formation of other major types of organic aerosol (~47 Tg yr−1 of anthropogenic primary organic aerosol; 12–70 Tg yr−1 of secondary organic aerosol) indicate that emissions from actively spore-discharging fungi should be taken into account as a significant source of organic aerosol. Their effects might be particularly important in tropical regions, where both physicochemical processes in the atmosphere and biological activity at the Earth's surface are particularly intense, and where the abundance of fungal spores and related chemical compounds are typically higher than in extratropical regions.
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Dutta, Abhishek, and Wanida Jinsart. "Gaseous and Particulate Matter Emissions from Road Transport: The Case of Kolkata, India." Environmental and Climate Technologies 25, no. 1 (January 1, 2021): 717–35. http://dx.doi.org/10.2478/rtuect-2021-0054.
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Abstract Indian cities are highly dependent on road transport for freight and passenger traffic movements. The estimated road transport led yearly emission inventory of pollutants for 25 million-plus population cities of India indicates vehicle stock as the critical contributor to air pollution in cities. During 2025 the city of Kolkata will be responsible for the emission of 21 668.24 Gg of CO2 followed by 272.81 Gg of CO, 98.21 Gg of NOX, 16.9 Gg of CH4, 93.39 Gg of SO2, 8.6 Gg of PM, and 38.55 Gg of HC due to its 2.79 million vehicles. The total vehicle stock of 25 leading Indian cities increased by 19 % during 2015–2017, and during the same period, Rajkot and Vadodara had the highest rise of 97 % and 94 % respectively. Out of 25 cities total CO2 (220 560 Gg) and CO (3185 Gg) vehicular emissions during 2017, Delhi was the highest contributor with 22 % and 20 % respectively followed by Bengaluru (12 %, 12 %), and Chennai (9 %, 8 %). The GHG emission per unit area of Kolkata during 2017, due to on-road vehicular emission, was the highest amongst the 25 cities of India. For Kolkata, cars were responsible for 35 % for CO2, 55 % of CO, 75 % of CH4, 27 % of PM, omnibuses for 41 % for NOX emission, taxis for 83 % of SO2, and two-wheelers for 36 % of HC emissions.
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BIELACZYC, Piotr, Andrzej SZCZOTKA, and Joseph WOODBURN. "An overview of particulate matter emissions from modern light duty vehicles." Combustion Engines 153, no. 2 (May 1, 2013): 101–8. http://dx.doi.org/10.19206/ce-117007.
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This paper presents a comparison of particle mass and number emissions from different types of vehicles with spark-ignition (SI) engines, with MPI and DI fuelling systems and compression-ignition (CI) engines with DI fuelling system with/without Diesel particles filters (DPF). The methodology of particulate mass and particle number emissions measurement with a full flow dilution tunnel for LDD engines and particulate sampling system is described. The results of measurements performed according to Euro 5/Euro 6 requirements for PC and LDV vehicles are presented, as performed on the chassis dynamometer in the Exhaust Emission Laboratory of BOSMAL Automotive Research and Development Institute (in Bielsko-Biala), Poland.
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Vashist, Devendra, and M. Bindra. "Development of a Novel Spiral Duct Particulate Matter Separator for Internal Combustion Engines." International Journal of Automotive and Mechanical Engineering 19, no. 3 (October 6, 2022): 9993–10001. http://dx.doi.org/10.15282/ijame.19.3.2022.11.0771.
Full textAbstract:
In compliance with the stringent BS-VI emission norms, control of particulate matter in diesel engine exhaust emission is currently achieved through diesel particulate filters, catalytic convertors, and baffle filters of various designs. In the present study a device comprised of a spiral duct with an increasing cross-sectional area over the length is designed and developed. The duct has a lining of heat-resistant and porous material fixed along the inside walls. The inlet of the devices is connected to the outlet of the tailpipe of the exhaust system. The device will collect the particulate matter in the heat-resistant porous lining along the walls of the spiral. The developed device is simple, economical and easily serviceable. The developed spiral duct particulate matter separator was tested on diesel vehicles, and the smoke density of tailpipe emission was measured in terms of the light absorption coefficient. During the analysis it was found that there is a reduction in light absorption coefficient by 25.37%. The developed design also overcomes the clogging problem of the exhaust system, which is a cause of backpressure in the case of conventional particulate filters. The design of the device is such that it can be easily retrofitted in the existing fleet of vehicles, making them compliant with stringent statuary emission norms.
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Devendra Vashist and Manu Bindra. "Particulate Matter Separator Analysis for Compression Ignition Engines Adhering Bharat Stage VI Norms." ARAI Journal of Mobility Technology 3, no. 1 (February 1, 2023): 456–63. http://dx.doi.org/10.37285/ajmt.3.1.4.
Full textAbstract:
In compliance of the stringent Bharat Stage VI emission norms control of particulate matter in diesel engine exhaust emission is currently achieved through diesel particulate filter, catalytic convertors, baffle filters of various designs. In the present research a device comprising of a spiral duct with increasing cross sectional area over the length is designed. The duct has a lining of heat resistant and porous material fixed along the inside walls. The device is fitted at the tail pipe of compression ignition engine driven vehicle through an inlet pipe of engine exhaust with outlet connected to the tail pipe of the exhaust system. This device will collect the particulate matter in the heat resistant porous lining along the walls of the spiral thus reducing the particulate matter. The spiral flow design was simulated and was found to be in line of acceptance of flow parameters. The developed sleek design can be easily retrofitted in the existing fleet of vehicles making them compliant for stringent statuary emission norms.
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Kongkratoke, Kritchai, Surat Bualert, and Kasem Chunkao. "Limiting Factors on Speed and Load of Diesel Engines Vehicle Urban Air Quality Management in Thailand." Modern Applied Science 9, no. 13 (November 30, 2015): 98. http://dx.doi.org/10.5539/mas.v9n13p98.
Full textAbstract:
Speed and load of diesel engine vehicles are the important factors affected on the fine particulate matter emission in Thailand.<strong> </strong>This study aimed to study the relation of speed and load of diesel engine vehicles affected on the emission of fine particulate matter in Thailand and also related to the emission of the exhaust from diesel engine vehicles. The experiment was designed into a x b Factorial Experiment in Completely Randomized Design. It was divided into 2 experiments as follows: 1) to study the emission of fine particulate matter in Euro 4 diesel engine vehicles, and 2) to study the emission of fine particulate matter in Euro 3 diesel engine vehicles. Moreover, it was to study 3 levels of speed in the driving form of diesel engine vehicles under Bangkok Driving Cycle, 3 levels of load, and 3 replications by using the experiment in Chassis Dynamometer System, and demonstrating the driving similarly to the actual driving. The samples of fine particulate matter from the exhaust were from the speed and load by using Micro-Orifice Uniform Deposition Impactors; MOUDI which had the size from 0.056-18 microns with the flow rate at 30 liter/ minute. The result from this study was found that the experiment of Euro 4 diesel engine vehicles had the factors of speed and load which affected on the emission of fine particulate matter at the level of 0.05, and F-value was 240.03 and 4.60 respectively. About the experiment of Euro 4 diesel engine vehicles, it had the factors of speed and load which affected on the emission of fine particulate matter at the level of 0.05, and F- value was 796.92 and 18.46 respectively. At the speed of 7.8 km/hr, the loads of empty vehicle and 1,000 kg of Euro 3 diesel engine vehicles were different at the level of 0.05. While the speed of 7.8 km/hr was at empty vehicle and 1,000 kg of Euro 4 diesel engine vehicles, it was not different in statistical significance. Therefore, there should be the regulations to control the load of the Euro 4 diesel engine vehicles lower than standard in the city with high traffic jam.