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Journal articles on the topic 'Dust control'

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Author: Grafiati

Published: 4 June 2021

Last updated: 1 August 2024

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1

Wang, Shi Bin, Ri Hui Chen, and Xiang Yun Meng. "Study on Dust Hazard in Coal Mine and its Countermeasures." Advanced Materials Research 986-987 (July 2014): 730–33. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.730.

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With the development of modern coal mining equipment, high-yield, high efficiency, high-speed mining technology was achieved, but also a sharp increase in the amount of dust generated in the mine at the same time, it damage workers health and bring insecurity to mine production. This paper has summarized the existing domestic and international prevention and control technology of dusts, elaborated mineral dust prevention and control work from the dust control, dust generation and dust diffusion three major aspects, and noted that the current technology trends.

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2

Zhang, Jian Zhuo, Tian Zi Zhu, Meng Gao, and Kang Kang Li. "Parameter Optimization and Numerical Simulation of Dust-Collecting and Dedusting System with Air Curtain in Heading Face." Advanced Materials Research 317-319 (August 2011): 2073–78. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.2073.

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A new type of dust-collecting and dedusting system with air curtain was developed to solve the problems of the dust-prevention in mine tunnel. The speed of air-curtain fan, the structure size and pressure of dedusting duct are the critical factors, which effect dust control of the whole system. In order to achieve optimal efficiency of dust control, the simulation was conducted with FLUENT(computational fluid dynamics software) to analyse the air-curtain fan surface path lines and dust particle tracks at different wind speeds of air curtain fan, dedusting duct diameters and outlet pressures. We obtained the law of fan speed, the diameter and outlet pressure of dedusting duct, which effect the whole system on dedusting. This law would play a guiding role on the structural optimization of dust-collecting and dedusting system with air curtain.

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3

Howes, M. J. "Dust control handbook." Minerals Engineering 2, no. 3 (January 1989): 434–35. http://dx.doi.org/10.1016/0892-6875(89)90013-7.

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4

KITADA, Yoshiyuki. "Coal dust emission and dust control method." Journal of the Fuel Society of Japan 69, no. 9 (1990): 823–27. http://dx.doi.org/10.3775/jie.69.9_823.

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5

Gong, Xiaoyan, Congcong Jia, Kang Sun, Jian Cui, Kefan Lei, Yuxuan Xue, and He Xue. "Distribution Law and Prediction Model of Dust Concentration under Airflow Adjustment in Fully Mechanized Heading Face." Mathematical Problems in Engineering 2019 (July 21, 2019): 1–17. http://dx.doi.org/10.1155/2019/6210704.

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The current situation of extensive ventilation management for the fully mechanized heading face cannot dynamically control air velocity and make reasonable dust migration distribution, resulting in serious disaster of dust and environmental pollution in the roadway. In this paper, the fluid mechanics, finite element numerical simulation, and underground measurement were combined to analyze the distribution of dust concentration under the variable airflow state at the duct outlet to obtain the massive correlation data of duct outlet parameters and dust concentration. For the pedestrian breathing-height in the backflow side and driver location, the double-objective BP prediction model for dust concentration under airflow adjustment was established, and the performance parameters and prediction accuracy of the BP prediction model were analyzed by using the relative error and fitting analysis. In Ningtiaota coal mine, located in Northern Shaanxi province of China, the self-developed control device is installed on the duct outlet with underground test and application verification to refine the model. The results indicated the dynamic control of airflow optimizes dust concentration distribution. The dust concentration at the pedestrian breathing-height in the backflow side and driver location was significantly decreased after the installation of adjustment device. Dust concentration at the pedestrian breathing-height and driver location was decreased by 31% and 34%, respectively, compared with the results before adjustment, which achieved the safe, environment-friendly, and energy-saving ventilation and the dust removal function in fully mechanized heading face.

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6

L.J.Bhagia, L. J. Bhagia, S. L. Dodia S.L.Dodia, and M. I. Shaikh M.I. Shaikh. "Silica Dust Exposure and Efficacy of Dust Control System in Small Silica Flour Mills, India." Global Journal For Research Analysis 3, no. 4 (June 15, 2012): 28–31. http://dx.doi.org/10.15373/22778160/apr2014/83.

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7

张, 立祥. "Study on Dust Control of Comprehensive Excavation Face Based on Air Curtain Dust Control and Dust Removal." Modeling and Simulation 11, no. 03 (2022): 675–83. http://dx.doi.org/10.12677/mos.2022.113063.

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8

Zhang, Xian Tang, Yi Bai, Hong Min Zhou, and Hong Li Wang. "Study and Application on Dust Comprehensive Prevention and Control Technology in Tunnel Excavation by Blasting." Advanced Materials Research 549 (July 2012): 931–35. http://dx.doi.org/10.4028/www.scientific.net/amr.549.931.

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In view of the characteristics of the blasting tunneling roadway, the paper has analyzed the distribution law and the movement rule of dust in roadway. Combined with the practical problems existing in the field, a series of methods were conducted to investigate and analyze the the dust source of tunneling, the authors propose the following optimal comprehensive directional measures: At first, using the wet shotcrete technology as more as possible to improving the shotcrete. Taking use of the corresponding measures of spraying and watering, and the use of water stemming is mandatory. The amount of wind in the exit of the ventilation duct should be controlled and the quality of water should be improved, enhancing the atomization effect. The settled dust on the walls of the tunnel should be moistened with sticking agent and the individual safeguard should be done better. Adopting the above dustproof measures should effectively solve the problems of a large amount of dust and the working environment of high dust concentration in the heading face by blasting. The working environment can be improved by the effective control for the dust concentration in the heading face .The work of dust comprehensive prevention in the heading face is of significance.

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9

Parsakhoo, Aidin, Seyed Ataollah Hosseini, Majid Lotfalian, Jahangir Mohammadi, and Meysam Salarijazi. "Effects of molasses, polyacrylamide and bentonite on dust control in forest roads." Journal of Forest Science 66, No. 5 (May 31, 2020): 218–25. http://dx.doi.org/10.17221/41/2020-jfs.

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In this study, some environmentally friendly anti-dust agents including sugar cane molasses, polyacrylamide and bentonite were used to control dust emission from the forest road surface within the 3, 9, 27 and 81-day timeframe. A rear-mounted spray system and dust collector devices were used for implementation of treatments and dust emission recording, respectively. The results showed that emitted dust tended to decrease with the increase of anti-dust agent concentrations. Moreover, the emitted dust started to decrease with time, with minimum reduction efficiency at the end of the 81st day. More than half of road surface aggregates had the size smaller than 10 µm that were aggregated by the application of molasses and polyacrylamide. The size of 70% of the road surface fines increased to more than <br />50 µm. Bentonite affected negatively road surface materials and caused fine aggregates to increase. It is concluded that the amount of fine aggregates in surfacing materials, rainfall occurrence, and type and dosage of anti-dust agents play an important role in the effectiveness and longevity of treatment

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10

Wu, Kuan, Shiliang Shi, Yijie Shi, and Yong Chen. "CFD-Based Determination of the Optimal Blowing and Suction Air Volume Ratio of Dual-Radial Swirl Shielding Ventilation in a Fully Mechanized Excavation Face." Geofluids 2021 (September 14, 2021): 1–12. http://dx.doi.org/10.1155/2021/5473256.

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Dust is one of the main pollutants in coal mines, which seriously affects the physical and mental health of workers, as well as the safe production in underground mines. Dual-radial swirl shielding ventilation is a new ventilation method for a fully mechanized excavation face and can effectively reduce the dust concentration in the underground. The dust control effect of dual-radial swirl shielding ventilation is mainly affected by the thickness and integrity of the shielding air curtain, as well as the disturbance of the flow field near the air curtain. By changing the blowing and suction air volume ratio of the air duct, the strength of the radial air curtain can be improved, and the dust control effect of the dual-radial swirl shielding ventilation system can be effectively improved. In order to determine the optimal operating parameters of the dual-radial swirl shielding ventilation system, a numerical simulation method was used to conduct an in-depth study on the blowing and suction air volume ratio of the system. The results showed that when the blowing and suction air volume ratio of the air duct was 1.5, the radial air curtain had the highest strength. Under this condition, the dust concentration at the driver’s position of the roadheader was the lowest, and the dual-radial swirl shielding ventilation system can achieve an ideal dust control effect.

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11

Huang, Rongting, Yichun Tao, Jianglin Chen, Shihang Li, and Shiyuan Wang. "Review on Dust Control Technologies in Coal Mines of China." Sustainability 16, no. 10 (May 11, 2024): 4038. http://dx.doi.org/10.3390/su16104038.

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China faces a challenge in the sustainable development of the coal industry due to pneumoconiosis problems. Dust control technologies are crucial for safe production and miners’ health, ensuring the industry’s longevity. This article reviews the development process of dust prevention and control in underground coal mines in China, summarizes various technologies, and divides them into dust suppression, open-space dust reduction, and mine dust collectors according to different stages and environments of use. In dust suppression technologies, coal-seam water injection can reduce total dust generation by 60%, wet rock drilling can reduce drilling dust in the presence of stable water sources and high-pressure bearing equipment, and water-seal blasting can reduce blasting dust by 50–70%. In open-space dust reduction technologies, spray dust suppression can remove total dust by 50–95% and the removal efficiencies of foam dedusting for total and respirable dust are reported to reach 95% and 85% under the right conditions, respectively. In dust collector technologies, dry collectors can remove 80–95% of total dust. Wet collectors achieve up to 90% efficiency, dependent on water supply and waste processing. This article also discusses vapor heterogeneous condensation technology as a promising method for improving respirable dust removal in humid mine environments.

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12

McTainsh, Grant H. "A Dust Monitoring Programme for Desertification Control in West Africa." Environmental Conservation 13, no. 1 (1986): 17–25. http://dx.doi.org/10.1017/s0376892900035827.

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To date, the principal constraint upon the implementation of a dust monitoring programme for desertification control in West Africa, is our limited knowledge of the dust processes to be monitored. A review of the state of dust research in Africa and over the Atlantic reveals a strong imbalance in favour of the latter, and resolves some misconceptions concerning dust source-areas and the relative importance of winter and summer dust. The results of Atlantic Ocean dust research are here brought together with the recent results of Harmattan dust research in Nigeria to demonstrate, at least tentatively, that the Harmattan and winter dust comprise a contiguous aeolian process system referred to as the Harmattan aeolian system.The Harmattan aeolian system is used here as a conceptual framework for the dust monitoring programme. Three dust process-zones are identified, within which three basic aeolian processes operate: dust entrainment (primary and secondary), dust transport, and dust deposition (primary and secondary). Within each dust process-zone, standardized dust collection, measurement, and analysis techniques, are proposed for a network of monitoring sites. Entrainment and transport can be measured — directly using aerosol pump-samplers and indirectly by relating dust-aerosol concentration to solar radiation and visibility. The indirect approach has the advantage that it opens up a large body of historical data on dust and, therefore, desertification. Deposition can be measured using dust-traps. The importance of such aspects as site characteristics, measurement period, and laboratory methods, are also discussed. Finally, a minimal administrative structure is suggested, allowing for the possibility of UNEP or other major support.

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13

Jiang, Bo Feng, and Qiu Xin Liu. "Study on Control Technology of Industrial Sticky Dust." Advanced Materials Research 1010-1012 (August 2014): 292–96. http://dx.doi.org/10.4028/www.scientific.net/amr.1010-1012.292.

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Based on the physical property analysis of sticky dust, the paper explained the effect of temperature, relative humidity, pressure, etc. on adhesion of dust. And focusing on these factors, take the silicon steel sticky dust for example, proposed two kinds of dust control technology: pipeline heat tracing technology and gas conditioning of SO3, both help improve system efficiency by selecting the appropriate dust collector.

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14

Pisarev, Viktor S., and Andrei A. Basargin. "METHODS OF DUST CONTROL ON OPEN-CAST MINE." Interexpo GEO-Siberia 1, no. 1 (July 8, 2020): 15–21. http://dx.doi.org/10.33764/2618-981x-2020-1-1-15-21.

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The practice of dust control on coal mines and technological roads both in Russia and abroad shows that reducing dust content, to the maximum permissible concentrations is a very difficult engineering task. To combat dust in open pit mines, various methods and techniques are used. The study of progressive dust control agents will allow normalizing sanitary and hygienic conditions at mining enterprises, and reducing the level of occupational diseases of miners. The article deals with the types of dust and the fact that a large amount of dust accompanies the processes of extraction and transportation of coal from the open-cast to the concentration plant. The experience of dust control at the enterprises of Joint Stock Company Siberian Anthracite is given.

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15

Valenzuela T, Pamela, Juan H. Palma G, and Sergio Vega S. "Dust suppressant treatments: Quality control." Revista de la construcción 13, no. 3 (December 2014): 27–35. http://dx.doi.org/10.4067/s0718-915x2014000300004.

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16

Ownby, D. "Dust Mite Control and Asthma." AAP Grand Rounds 1, no. 1 (January 1, 1999): 4. http://dx.doi.org/10.1542/gr.1-1-4.

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17

Volkwein, Jon C., Andrew B. Cecala, and Edward D. Thimons. "Moisture Application for Dust Control." Applied Industrial Hygiene 4, no. 8 (August 1989): 198–200. http://dx.doi.org/10.1080/08828032.1989.10390431.

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18

Rosanvallon, S., C. Grisolia, G. Counsell, S. H. Hong, F. Onofri, J. Worms, J. Winter, B. M. Annaratone, G. Maddaluno, and P. Gasior. "Dust control in tokamak environment." Fusion Engineering and Design 83, no. 10-12 (December 2008): 1701–5. http://dx.doi.org/10.1016/j.fusengdes.2008.04.001.

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19

Jones, William G., Judy W. Dennis, John J. May, Michael P. Whitmer, Paul D. Siegel, W. G. Sorenson, Diane Schwegler-Berry, and Greg J. Kullman. "Dust Control During Bedding Chopping." Applied Occupational and Environmental Hygiene 10, no. 5 (May 1995): 467–75. http://dx.doi.org/10.1080/1047322x.1995.10387639.

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20

Giummarra, George J., Graham Foley, and Stephen Cropley. "Dust Control: Australasian Experiences with Various Chemical Additives." Transportation Research Record: Journal of the Transportation Research Board 1589, no. 1 (January 1997): 50–53. http://dx.doi.org/10.3141/1589-08.

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Road dust can degrade agricultural produce, affect health, reduce road safety, increase wear and tear on vehicles, and increase the rate of deterioration of the roadway. In October 1996, Australian Road Research Board Transport Research completed and published a study of various dust-control techniques. That report encompassed a worldwide literature search on various measures to control dust and a survey of municipal councils and other road authorities across Australia and New Zealand to ascertain what experiences people have had with the use of dust suppressants. The outcome of this study is to provide a guide to the reported effectiveness of particular dust suppressants under given circumstances and other methods to better control dust emissions.

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21

O., Engr Amosu C. "Dusts Control operations in Ririwai Mines, Kano State, Nigeria." Indian Journal of Management and Language 1, no. 2 (October 10, 2021): 29–36. http://dx.doi.org/10.35940/ijml.b2005.101221.

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Respirable dust is everywhere (in the surface and underground mine) operations and its environs. Ririwai Tin mine is laden with dust of metallic particles of Arsenic (As), Chromium (Cr), Lead (Pb) and Zinc (Zn). These particles are also found in the soil. Continuous inhalation of dust could lead to irreversible diseases. This paper addresses the control of dust, using previous review of prevailing metallic concentrates. This research answers questions like which are the dust control strategies to be adopted by Ririwai tin mine to obtain best practice? What challenges will Ririwai tin mine face when applying dust control methods in their operation? What is the impact of dust laden with metallic particles on soil, water, vegetation and man in Ririwai tin mine?

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22

C.O., Engr Amosu. "Dusts Control operations in Ririwai Mines, Kano State, Nigeria." Indian Journal of Management and Language 1, no. 2 (October 10, 2021): 29–36. http://dx.doi.org/10.54105/ijml.b2005.101221.

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Respirable dust is everywhere (in the surface and underground mine) operations and its environs. Ririwai Tin mine is laden with dust of metallic particles of Arsenic (As), Chromium (Cr), Lead (Pb) and Zinc (Zn). These particles are also found in the soil. Continuous inhalation of dust could lead to irreversible diseases. This paper addresses the control of dust, using previous review of prevailing metallic concentrates. This research answers questions like which are the dust control strategies to be adopted by Ririwai tin mine to obtain best practice? What challenges will Ririwai tin mine face when applying dust control methods in their operation? What is the impact of dust laden with metallic particles on soil, water, vegetation and man in Ririwai tin mine?

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23

Liu, Yuan, Long Shao, Wanzhang Wang, Jinfan Chen, Heng Zhang, Yue Yang, and Baichen Hu. "Study on Fugitive Dust Control Technologies of Agricultural Harvesting Machinery." Agriculture 12, no. 7 (July 16, 2022): 1038. http://dx.doi.org/10.3390/agriculture12071038.

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The fugitive dust generated by agricultural harvesting machinery not only causes harm to production safety, but also affects the living environment of people in agricultural areas. This is also one of the hot issues that have emerged in the green development of rural areas in recent years, which is related to agricultural safety and hygiene culture. Due to the lack of relevant research, many researchers still have considerable controversy on the issue of agricultural dust. Therefore, in combination with the actual production of agricultural mechanization, according to the cause of dust generation and particle characteristics, the selection of appropriate dust reduction technology and detection methods is of great significance for the research on the control of dust from agricultural harvesting machinery. Aiming at the dust problem in agricultural mechanization production, this research first introduces the relationship between fugitive dust and atmospheric particulate matter and the main components of fugitive dust, and then focuses on the causes of dust generated by wheat harvesters and peanut harvesters in field operations, and explains the main hazards of dust to human health, ecological environment, and climate. This study introduces four fugitive dust emission reduction technologies and five particle measurement methods, and compares and analyzes their feasibility in the application of agricultural harvesting machinery dust control. Finally, we put forward conclusions and suggestions on the dust control technology of agricultural harvesting machinery in order to provide reference for the control of agricultural harvesting machinery dust, improve the field operation environment, and promote the green development of modern agriculture.

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24

Hasanat, Md Abul, Chandra Rani Sarkar, and ATM Zoadur Rahim Zahid. "Effects of Exposure to Cotton Dusts on FVC, FEV1, and FEV1/ FVC% in Male Cotton dust Workers." Journal of Bangladesh Society of Physiologist 11, no. 1 (September 24, 2016): 35–38. http://dx.doi.org/10.3329/jbsp.v11i1.29708.

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Background: Workers in environment with cotton dust exposure are at risk of development of occupational pulmonary functional disorder.Objectives: To observe the effects of cotton dust exposure on FVC, FEV1, FEV1/FVC% in male cotton dust worker.Methods: This cross-sectional study was carried out in the department of physiology, Rangpur Medical College, Rangpur from 2014july to 2015July. Total 25 apparently healthy non-smoker male workers aged 20-40 years, exposed to cotton dust for at least 6 months, were selected from different fabric weaving and cotton ginning factories of Rangpur district. Twenty five age & BMI matched apparently healthy male subjects, not exposed to cotton dusts were taken as control. FVC, FEV1 and FEV1 /FVC% of all subjects were recorded by using a digital spirometer. For statistical analysis, unpairedt-test was performed.Results: The mean percentage of predicted value of FVC, FEV1 were significantly lower (p<0.001) in cotton dust exposed workers (CD-EW) than those of control. The mean percentage of predicted value of FEV1 / FVC% in CD-EW is slightly decreased compared to control but it was not statistically significant.Conclusions: From the result of this study it can be concluded that cotton dust (CD) may have harmful effects on some pulmonary function.Bangladesh Soc Physiol. 2016, June; 11(1): 35-38

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25

Jairoce, Carlos F., Cristiano M. Teixeira, Adrise M. Nunes, Daniela R. Holdefer, Alexandra P. Krüger, and Flávio R. M. Garcia. "Efficiency of inert mineral dusts in the control of corn weevil." Revista Brasileira de Engenharia Agrícola e Ambiental 20, no. 2 (February 2016): 158–62. http://dx.doi.org/10.1590/1807-1929/agriambi.v20n2p158-162.

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ABSTRACT Corn weevil (Sitophilus zeamais) may cause great losses in the crop and in stored corn grains. This insect is controlled with the use of chemical insecticides, which may cause serious damage to human health. One alternative of control is the use of inert dusts. The objective of this study was to evaluate the efficiency of inert dusts in the control of S. zeamais under laboratory conditions. The experiment was conducted in 2014, in a completely randomized design, and the treatments consisted of basalt dust with three different granulometries (A, B and C) and diatomaceous earth, each of which at the doses of 2 and 4 kg t-1 and a control (no application). Each treatment had four replicates, and the sample unit consisted of 20 g of corn grains infected with 10 adults of S. zeamais kept in temperature-controlled chamber at 25 °C, 70% RH and photophase of 12 h. The dust efficiency was calculated using the equation of Abbott. The mortality rate was higher with the use of diatomaceous earth, reaching 100% after 5 days of exposure and the percentage of control for basalt dusts, 29 days after treatment, was above 80%.

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26

Yang, Xiu Dong, and Long Zhe Jin. "Simulation of Dust Control in Coal Mining." Advanced Materials Research 671-674 (March 2013): 1624–27. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.1624.

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Many different dust control measures have been used to reduce or control the generation of dust during mining operations. As respirable dust control is affected by the overall airflow pattern, a CFD model of the face area could be created to estimate the impact of these factors on airflow in the face area. a steady state CFD model of the airflow developed in the paper with typical field configuration of the line curtain, including leakage along the roof and floor, and with the scrubber idle. This should provide insight for further possible steps for improving dust control.

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27

Nguyen, Quang Van, Thinh Van Nguyen, and Phong Duyen Nguyen. "Study on the Influence of Some Ventilation Parameters on Dust Dispersion in Heading Face Coal Mine Using CFD Numerical Model." Applied Sciences 14, no. 13 (June 28, 2024): 5643. http://dx.doi.org/10.3390/app14135643.

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Coal dust is one of the environmental factors that seriously affect the health of workers as well as the mining equipment in underground coal mines. At present, coal dust is commonly generated during drilling, blasting, excavation, and transportation processes in mining operations. During mining blasting processes, coal dust is generated with varying particle sizes and high concentration levels. High concentrations of dust will affect mining operations and increase the ventilation time required for mining faces. In addition, coal dust exists in suspended form in the roadway and is harmful to human health, especially fine dust particles that have a negative impact on work efficiency. To improve ventilation efficiency and eliminate coal dust, this article presents a CFD-DPM numerical modeling method that integrates a DEM collision model based on the finite element method to analyze the motion characteristics of airflow and dust particles in the mine tunnel, while considering collisions between particles and between particles and walls. The article analyzes the distribution of wind speed, the dispersion of dust in the space around the roadway, and dust concentrations at distances of 1 m, 3 m, and 6 m from the working personnel and at a position 1.5 m above the roadway floor, corresponding to the breathing zone of the workers, with varying parameters such as velocity and duct position. The results indicate that with a wind velocity of V = 18 m/s and an air duct height h = 3.0 m, the best dust reduction results are achieved, and they provide theoretical guidance for selecting and optimizing ventilation parameters in dust control.

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28

Jing, De Ji, Shao Cheng Ge, and Jian Liu. "Coal-Dust Motion Law and Control Technology of the Feeder." Advanced Materials Research 204-210 (February 2011): 928–31. http://dx.doi.org/10.4028/www.scientific.net/amr.204-210.928.

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The aim of this paper is mainly to study the main coal-dust pollution sources in the coal preparation plants of Ping Shuo Branch of China National Coal Group. Through the combination of many measurement data with numerical simulation of gas-solid two-phase flow, dust precipitation mechanisms have been gained for the feeder in Ping Shuo Coal Preparation Plant. Dust pollution of the feeder is caused by the positive pressure of the induced feeding wind-flow and the bad seal itself. Firstly, the durable flexible seal material is used to seal up the feeder. Secondly, the seal guide-chute with the dust collector is installed on the belt. Finally, the air volume and the pressure of the dust collector are determined by means of numerical simulation, and the reasonability of the plan is explained from the angle of the dust control mechanism. The main technical parameters of the dust control plan, such as the seal guide-chute length, and the air volume and the pressure of the dust collector, are determined through the numerical simulation. The simulation result and the actual result verify the above dust control plans. The study methods and results provide a guide for the dust control in a certain similar business.

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29

Price, Richard, Laren Blevins, Ken Pinkston, and Mike Bell. "Laboratory Residual Dust Study for Brown Recluse Spider Control." Insecticide and Acaricide Tests 15, no. 1 (January 1, 1990): 381. http://dx.doi.org/10.1093/iat/15.1.381.

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Abstract Two laboratory tests were conducted to evaluate the residual activity of 5 different dust formulations at different dosage rates. In test 1, dusts were applied to 2 different surfaces, masonite and the paper backing attached to Owens-Corning Fiberglass Building Insulation, while only masonite was used in test 2. Treatment consisted of spreading dust evenly over the masonite surface (4 inch × 4 inch × 1/4 inch) with a paint brush to an accuracy of 0.001 g. The dust was applied to the paper backing of insulation (4 inch × 4 inch) by placing it in a closed cylindrical container (7 inch × 6 3/4 inch diameter) and treating with a hand bulb duster. The duster was held horizontally with the nose in a hole at a height of 5 1/4 inches and pumped 2 to 3 times. The amount of dust applied was then measured and more was added as needed to an accuracy of 0.005 g. The application amounts were set to duplicate label rates if known. Treatments were allowed to age for 24 h. After 24 h, spiders were exposed to the treated surface for one hr before being transferred to an untreated surface. Test procedure consisted of placing one spider under a 10 oz plastic cup (7.1 square inches of treated surface) and then confined to an untreated surface for 48 h after treatment. Each treatment was replicated 5 times. Mortality counts were made at 1, 4, 8, 24, and 48 h. Tests were started at 1, 7 and 14 DAT. All mortality figures for this test are accumulative from the first observation (1 HOAT) for that particular date to conclusion of test on that date (48 HOAT). Spiders used in the test were collected from a natural habitat that had no prior insecticide treatment. Spiders were maintained in 1 oz plastic cups with food and water.

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30

Ilar, Anna, Per Gustavsson, Pernilla Wiebert, and Lars Alfredsson. "Occupational exposure to organic dusts and risk of developing rheumatoid arthritis: findings from a Swedish population-based case–control study." RMD Open 5, no. 2 (November 2019): e001049. http://dx.doi.org/10.1136/rmdopen-2019-001049.

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ObjectivesWe estimated the association between occupational exposures to five different organic dusts: wood, animal, paper, textile and flour dust and the risk of developing rheumatoid arthritis (RA).MethodsThis population-based case–control study analysed 12 582 incident cases and 129 335 controls. Participants were identified from national public authority and quality registers. Census data on occupations were collected 1960–2010 and we estimated the exposure to organic dust with the help of job-exposure matrices. We used logistic regression to assess the OR of seropositive or seronegative RA. Estimates were adjusted for the matching variables (sex, county, age and index year), education and occupational silica exposure.ResultsExposure to animal dust was associated with an increased risk of RA among both men and women. The OR was 1.2 (95% CI=1.1 to 1.4) for seropositive RA and 1.3 (95% CI=1.1 to 1.5) for seronegative RA among ever exposed participants compared with unexposed. The risk increased with duration of exposure for seropositive RA, and participants who had been exposed in five or more censuses had an OR of 1.6 (95% CI=1.1 to 2.2, p for trend=0.003). Exposure to textile dust also generated a significant dose–response relationship for seropositive RA (p for trend=0.014). We detected no association between exposure to wood, paper or flour dust and risk of RA.ConclusionsOverall, exposure to animal dust and textile dust was associated with an increased risk of developing RA. These observations give further support to the notion that airborne exposures are involved in the aetiology of RA.

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Corey, Jacquelynne P. "Environmental Control of Allergens." Otolaryngology–Head and Neck Surgery 111, no. 3P2 (September 1994): 340–47. http://dx.doi.org/10.1177/01945998941113p202.

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Allergy therapy properly consists of three possible treatment methods that can be used singly or in combination: environmental control (avoidance), pharmacotherapy, and immunotherapy. What allergens are effectively treated by environmental control? There are several broad groups of allergens with which we are concerned: indoor allergens such as dust, animal dander, molds (indoor), and cockroach; and outdoor allergens such as trees, grasses, weeds, and molds (outdoor); and, lastly, foods. The largest body of work has been collected regarding the effectiveness of indoor allergens, especially dust mites and cat. Scientifically proven measures exist for dust mites, cats, and infant formulas. Practical advice for controlling the environment for other furred animals, cockroaches, molds, and pollens are summarized. More research on effective avoidance measures for these other allergens is needed to help our patients control their environment effectively.

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Wu, Dongmei, Jie Gao, and Ke Lu. "Dust Control Technology in Dry Directional Drilling in Soft and Broken Coal Seams." Energies 15, no. 10 (May 21, 2022): 3804. http://dx.doi.org/10.3390/en15103804.

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High rate of dust generation and serious dust diffusion in dry directional drilling in soft and broken coal seams (SBCS) have long been critical problems in the mining process. To solve these problems, in this study, a dust hood was designed and applied to realize non-contact dust control in drilling holes. The optimal performance of the dust hood was achieved when different technical parameters, including the gap width between the dust hood and the drill pipe, the air-slot width of the sealing device, the slag discharge pressure, and the air curtain pressure were controlled at 2 mm, 0.2 mm, 0.3 MPa, and 0.5 MPa, respectively. As a result, the dust concentration was reduced from 540 mg/m3 to 15 mg/m3, with dust control efficiency reaching 97.2%. The in situ test results confirmed good dust control effects, as the dust control efficiency reached 98.3% after using the dust hood.

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Ren, Yu Hui, and Yue Ping Qin. "Study on Contraction of Dust Control System in Continuous Coal Mining." Advanced Materials Research 734-737 (August 2013): 824–27. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.824.

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Most of the dust control models indicate the line-curtain air reaching the face is limited and does not extend. Lower air quantity at the face helps in containing and concentrating the dust close to the face where no occupations are present. Hence, effective use of hydraulic sprays and directing the face dust-laden air into the scrubber may improve dust control. In this paper, we put forward a field testing of the modified scrubber-modified continuous miner demonstrated significant improvements in visibility and dust and quartz reduction, as compared to what was achieved with the current scrubber-current continuous miner dust control system. This is unfavorable from methane dilution point of view but can be used to advantage for improved dust control.

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Zhao, Jing Bo, and Li Bo Hao. "Dust Control in Brick and Tile Production Enterprises." Applied Mechanics and Materials 448-453 (October 2013): 529–31. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.529.

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Analysis of the causes of dust brick and tile production enterprises, from the impact on human health, the factory machinery and equipment wear, impact on environment protection, expounds the harmfulness of dust, and discusses the type, structure and function of the filter, as well as the precipitator combined use method and way to control dust.

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Cui, Tianxin. "Development of Dust Monitoring in Urban Construction Sites and Suggestions on Dust Control." Journal of Innovation and Development 2, no. 2 (March 14, 2023): 18–21. http://dx.doi.org/10.54097/jid.v2i2.5904.

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Construction site dust is one of the main sources of urban air pollution. In order to improve urban air quality and reduce the probability of respiratory diseases among construction workers, effective measures must be taken to control construction site dust. Dust monitoring is an important measure to reduce construction pollution to the surrounding environment. Vigorously developing dust monitoring is the only way to build a civilized construction and green city. Improving dust monitoring at urban construction sites has important practical significance for urban air quality control and accurate treatment of dust at construction sites. Dust monitoring can improve the appearance of the city, increase the investment of investors, and promote the economic development of the city. At the same time, it can also increase the living comfort and happiness index of residents, so dust monitoring is very necessary. In this paper, the research status, necessity and development benefits of urban construction site dust monitoring are expounded, then sort out the key points of dust monitoring technology, and give some suggestions to the possible problems in the existing technology to ensure the smooth implementation of dust monitoring. And put forward the proposal with the dust treatment and control from construction unit, construction unit and supervision unit three aspects to help reduce the construction of dust pollution.

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Deng, Youfan. "Discussion on Dust Control Technology of Coal Mine Integrated Excavation Face." International Journal of Energy 3, no. 1 (June 26, 2023): 55–57. http://dx.doi.org/10.54097/ije.v3i1.10541.

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Coal is an important energy source in our country, and coal mine dust seriously endangers production safety and occupational health and safety, so it is necessary to take effective technical measures to prevent and control the coal mine. According to the main technical ways of dust prevention and control, the technical measures such as improving dust-proof water, strengthening coal seam water injection, carrying out high-pressure external spray, dust control and dust extraction purification, air flow purification and individual protection are discussed respectively. Finally, the technical measures of dust prevention and control in the future are prospected, and several technologies and equipment should be emphasized to break through.

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Zhang, Hui, Weihai Han, Youlin Xu, and Zhenfeng Wang. "Analysis on the Development Status of Coal Mine Dust Disaster Prevention Technology in China." Journal of Healthcare Engineering 2021 (April 19, 2021): 1–9. http://dx.doi.org/10.1155/2021/5574579.

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In recent years, with the increasing level of mechanization, automation, and intelligence in mine mining, dust pollution in the working environment of coal mines has become increasingly serious. Coal mine dust prevention is an important work related to the life, health, and production safety of miners, and it is also one of the technical problems of mine safety in production. With the continuous revision and improvement of China′s Occupational Disease Prevention and Control Law, coal mining enterprises have generally strengthened the publicity, prevention, and control of occupational diseases among employees, and the control of coal mine dust has been used as a means for enterprises to improve the production environment and strengthen the occupational health of employees. Key work-based studies have shown that China’s coal mines have formed a theoretical system and technology system of dust prevention and control. In the future, China’s coal mines will start from intelligent dust prevention, achieve high-precision dust sensing-transmission-assessment and early warning, and develop a combined dust collector that integrates the functions of atomization dust removal, miniaturization, dry and wet mixing, and large air suction capacity. The combined dust collector realizes the efficient ventilation control and dust removal of the fine dust in wide-area complex spaces such as fully mechanized mining face and fully mechanized mining face. At the same time, breakthroughs have been achieved in low-permeability coal seams, such as strong hydraulic permeability-enhancing technology, intelligent dust-proof robots, and chemical dust suppression. This article introduces the basic concepts, generation, distribution, and hazards of coal mine dust and analyzes the characteristics, applicable conditions, and use effects of various dust control measures such as ventilation dust removal and wet dust removal. Moreover, this article also proposes specific prevention and control measures for related occupational diseases and discusses the development trend of dust prevention and control technology in the hope of providing guidance and reference for coal mine dust prevention and control.

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HARLIEN, ALLAN T. SHOWLER AND JESSICA L. "Effects of Three Desiccant Dusts and Two Dusts with Botanical Compounds on House Fly (Diptera: Muscidae) Eggs, Larval Development to Pupation and Adult Emergence and Survival." BIOPESTICIDES INTERNATIONAL 20, no. 01 (June 2024): 73. http://dx.doi.org/10.59467/bi.2024.20.73.

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The house fly, Musca domestica L. (Diptera: Muscidae), is considered to be a nuisance pest and a mechanical carrier of medical and veterinary pathogenic organisms. Because the fly has developed resistance to a variety of commonly used insecticides, novel alternative pest control tactics are being researched. Five desiccant dust-based formulations, silica gel (CimeXa), perlite (Imergard WP), diatomaceous earth (Celite 610, biologically produced in diatoms), silica gel + pyrethrins + piperonyl butoxide (PBO, a synergist) (Drione), and silica gel + thyme oil (EcoVia WD), were evaluated for effects on house fly egg hatching, larval development to pupation, adult emergence from pupae, and adult survival in the laboratory. While silica gel, perlite, and diatomaceous earth did not reduce egg hatching, pupation, and adult emergence from pupae, the silica gel + pyrethrins + PBO and silica gel + thyme oil formulations provided 100% control of those life stages. Adult house flies exposed to complete bodily coating and limited exposure from tarsal contact were killed by all three desiccant dust products without botanicals and two products formulated with botanicals. The formulations with bioactive botanicals provided more rapid control (3?4 h) than the desiccant dusts without botanicals (<24 h). All dust formulations showed effectiveness for house fly control to one extent or another; possible uses of the dusts as control tactics are discussed.. KEYWORDS :Diatomaceous earth, Musca domestica, Perlite, Silica, Thyme

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Bhatia, Karan. "DUST GENERATION AND ITS SEPARATION METHOD." International Journal of Students' Research in Technology & Management 3, no. 1 (September 27, 2015): 228–30. http://dx.doi.org/10.18510/ijsrtm.2015.314.

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Dust control in underground as well as open pit mines has been an area of intense research and study. Dust controlling by dust capturing or dust consolidation and using appropriate method for different causes of dust generation has been the concern of this paper. Dust is generated mainly in every activity of mine from drilling to transportation to using any modern mechanization for ore extraction. Dust generation can cause less visibility more accidents, breathing problem, affects agriculture and vegetation. Various methods deployed for its control and separation does not impact its originator rather reduces its percentage in mine air. Wet drilling, water spraying, ventilation, dust collector and air flow to control the generation of dust have proven profound impact to control dust. This paper embeds the detailed causes of dust, how dust can be reduced in mine air and what can be done to prevent it, if possible.

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Liu, Tian-Qi, Xuan Zhao, Wei-Ye Tian, Rui-Heng Jia, Ning Wang, and Zhi-Xin Cai. "Suppression effect of CaCo3, NaCl, and NH4H2PO4 on gas-fat coal dust explosion pressure and flame characteristics." Thermal Science, no. 00 (2022): 141. http://dx.doi.org/10.2298/tsci220718141l.

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Coal dust explosion is a major accident affecting the safety of coal mine production. In order to control coal dust explosion, using inert dust to suppress explosion is one of the effective methods. Taking the gas-fat coal as the research object and CaCO3, NaCl, and NH4H2PO4 as the inert dust, the suppression effect of inert dust on gas-fat coal dust explosion pressure and flame is studied. It is found that when the gas-fat coal dust particle size is 48~58 ?m, both the maximum pressure and the farthest distance of flame reach the maximum value. Among the three inert dusts, NH4H2PO4 has the best suppression effect, followed by NaCl, and CaCO3 has the worst suppression effect on explosion. The smaller the particle size of NH4H2PO4, the better the explosion suppression effect. When the mass percentage of NH4H2PO4 mixed into gas-fat coal dust is 60%, and the particle size of NH4H2PO4 is 0~38 ?m, the explosion is completely suppressed, it is mainly due to the isolation of the coal dust particles from the oxygen and the dilution of the oxygen concentration.

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Ge, Yongxiao, Jilili Abuduwaili, and Long Ma. "Lakes in Arid Land and Saline Dust Storms." E3S Web of Conferences 99 (2019): 01007. http://dx.doi.org/10.1051/e3sconf/20199901007.

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Saline dust storms are typical mainly for the arid and semiarid Central Asia induced by environmental change of tail-end lake basin. Although not the dominant type of global dust, saline dusts from playas may be important with respect to atmospheric chemistry, windborne nutrients and human health because of their high salt content. Saline dust storms in Central Asia occur frequently; this is not only a local issue, but also a regional ecological disaster. A complete understanding of the mechanism and diffusion characteristics are urgently required, and control measurements are urgently needed to lessen the occurrence of saline dust storms, which has been an ignored and serious environmental issue in the context of climate change in arid and semi-arid regions.

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42

Jiang, Hua, and Yi Luo. "Development of a roof bolter drilling control process to reduce the generation of respirable dust." International Journal of Coal Science & Technology 8, no. 2 (February 27, 2021): 199–204. http://dx.doi.org/10.1007/s40789-021-00413-9.

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AbstractThe drilling operation in the roof bolting process, especially in hard rock, generates excessive respirable coal and quartz dusts, which could expose the roof bolting operator to continued health risks. Previous research has shown that the amount of respirable dust produced is dependent on the main drilling parameters, specifically the drilling rotational and penetration rate. In this paper, a roof bolter drilling control process was proposed to reduce the generation of respirable dust. Based on the analysis of laboratory drilling test results, a rational drilling control process (adjusting rotational and penetration rates) to achieve the optimal drilling parameter for different rock types was proposed. In this process, the ratio between specific energy and rock uniaxial compressive strength was used as the index to determine the optimal operation point. The recommended drilling operation range for the rock type used in the experiment was provided, and the reduction in respirable dust generation was demonstrated. By following this control process, the drilling efficiency can be monitored in real time, so the system can stay in a relatively high-energy efficiency with less respirable dust production from the drilling source. This algorithm is targeted to be incorporated into the current roof bolter drilling control system for drilling automation so that a safe and productive drilling operation can be conducted in a healthy working environment.

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43

Li, Gui Xian, Bang Qing Deng, De Fu Liu, and Fan Zhang. "Study on the Control of Industrial Dust from Alumina Production Process." Applied Mechanics and Materials 737 (March 2015): 599–602. http://dx.doi.org/10.4028/www.scientific.net/amm.737.599.

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The dust from industrial process does harm to the human health, the equipments and environment. Based on the comparison between bag filter and electrostatic precipitator, bag filter was used to control the dust from the industrial process with the filter cloth of polypropylene fiber needled felt. During run time, the filtration rate should be less than 1.59m/min and the pressure of the draught fan should be 3100Pa with the wind speed in the range of 22m/s to 24m/s, which eliminated the dust formation. And the size of dust hood should be heightened and lengthened in order to decrease dust escape and the cone angle of the dust hood should be more than 60°. In additon, in order to prevent the blocking of the ash unloading device, the best angle of the ash discharging pipe should be 60°. The dust collection system run well for five years and the collection efficiency was more than 99.0%, which created the benefits of environment, economics and society.

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44

Pollart, Susan M., George W. Ward, and Thomas A. E. Platts-Mills. "House Dust Sensitivity and Environmental Control." Immunology and Allergy Clinics of North America 7, no. 3 (December 1987): 447–62. http://dx.doi.org/10.1016/s0889-8561(22)00183-7.

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Pollart, Susan M., Martin D. Chapman, and Thomas A. E. Platts-Mills. "House Dust Sensitivity and Environmental Control." Primary Care: Clinics in Office Practice 14, no. 3 (September 1987): 591–603. http://dx.doi.org/10.1016/s0095-4543(21)01026-5.

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46

F. E. Dowell. "Dust Control in Peanut Grading Rooms." Transactions of the ASAE 32, no. 5 (1989): 1774–78. http://dx.doi.org/10.13031/2013.31222.

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47

Fernández-Caldas, Enrique. "Dust mite allergens: Mitigation and control." Current Allergy and Asthma Reports 2, no. 5 (September 2002): 424–31. http://dx.doi.org/10.1007/s11882-002-0077-z.

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Tien, Jerry C., and Jin Kim. "Respirable Coal Dust Control Using Surfactants." Applied Occupational and Environmental Hygiene 12, no. 12 (December 1997): 957–63. http://dx.doi.org/10.1080/1047322x.1997.10390635.

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HEINSOHN, ROBERT JENNINGS, and MOHAMMED H. MEGHERHI. "CONTROL OF FUGITIVE DUST BY WINDBREAKS." Particulate Science and Technology 4, no. 1 (January 1986): 87–112. http://dx.doi.org/10.1080/02726358608906444.

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Going, John E., and Tony Lombardo. "Dust collector explosion prevention and control." Process Safety Progress 26, no. 2 (June 2007): 164–76. http://dx.doi.org/10.1002/prs.10166.

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