Relevant bibliographies by topics / Piggery

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Piggery'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 January 2023

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Journal articles on the topic "Piggery"

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Choi, E. "Piggery Waste Management." Water Intelligence Online 6 (December 30, 2015): 9781780402031. http://dx.doi.org/10.2166/9781780402031.

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Su, Jung-Jeng, Shih-Torng Ding, and Hsin-Cheng Chung. "Establishing a Smart Farm-Scale Piggery Wastewater Treatment System with the Internet of Things (IoT) Applications." Water 12, no. 6 (June 9, 2020): 1654. http://dx.doi.org/10.3390/w12061654.

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The conventional piggery wastewater treatment system is mainly a manual operation system which may be well managed by experienced technicians. However, the pig farmers must simultaneously manage their pig production as well as their on-farm wastewater treatment facility. For this study, Internet of Things (IoT) applications were introduced on a 1000-pig farm to establish a smart piggery wastewater treatment system, which was upgraded from a self-developed fully automatic wastewater treatment system. Results showed that the removal efficiency of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and suspended solids (SS) of the piggery wastewater based on the sensor data before and after water quality sensor calibration were 89%, 94%, and 93%, and 94%, 86%, and 96%, respectively. Moreover, the removal efficiency of BOD, COD, and SS of the piggery wastewater based on the analytical chemical data before and after water quality sensor calibration were 93%, 89%, and 97%, and 94%, 86%, and 96%, respectively. Experimental results showed that overall removal efficiency of BOD, COD, and SS of the piggery wastewater after water quality sensor calibration were 94%, 86–87%, and 96%, respectively. Results revealed that the farm-scale smart piggery wastewater treatment system was feasible to be applied and extended to more commercial pig farms for establishing sustainable pig farming.
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Chang, Chin-Feng, Li-Chun Chen, Cheng-Jer Hsieh, Kai-Chun Chang, and Jung-Jeng Su. "Characterization of polyhydroxyalkanoate-producing bacteria isolated from sludge of commercial pig farms for producing methyl esters." Water Science and Technology 68, no. 10 (October 24, 2013): 2171–77. http://dx.doi.org/10.2166/wst.2013.474.

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The objectives of this work were to isolate and characterize the polyhydroxyalkanoate (PHA) producing bacteria in enriched piggery sludge and make methyl esters from PHA for industrial applications. The strain ECAe24 isolated from piggery sludge with the highest PHA production was selected to produce PHA and then methyl ester by trans-esterification using glucose as substrate under mesophilic conditions. The final product after trans-esterification consisted of approximately 75.39% of fatty acid methyl ester and was identified as decanoic acid-3-hydroxy-methyl ester, octanoic acid-3-hydroxy-methyl ester, and some other contents. The novelty of this study is to use PHA-producing bacteria from piggery sludge to make fatty acid methyl esters which can be used as materials for producing biodiesel from piggery wastes.
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Otunaruke, EMAZIYE Peter, EMAZIYE Oghenekome, and OKPARA Oghenesuvwe. "Job Motivation and Satisfaction Among Piggery Farm Employees in Niger Delta Area Nigeria." International Journal of Research and Review 9, no. 8 (August 10, 2022): 193–98. http://dx.doi.org/10.52403/ijrr.20220817.

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The research assessed empirically the economic appraisal of job motivation and satisfaction among piggery employees. Multi-stage technique of sampling was employed. Structured questionnaires were employed in data collection, and data were analyzed employing descriptive statistics and probit regression model. Productive age of 48 years that were mostly married male with secondary level of education engaged in piggery farming. Moderate family size of 9 persons and a staff strength of 15 persons involved in piggery production. The probit regression results confirmed that wages and salaries were a major determinant to job satisfaction as it was positively statistically significant while advance payment was not a major determinant as advance payment was negatively statistically significant. High wages/salaries was most motivational factor of job satisfaction. The study exposed that job satisfaction resulted to increase in farm revenue and profit. The study suggests that motivational policy of high wages/salaries proportion to work executed and other motivational variables should be enacted in the piggery industry to increase revenue and profit. Keywords: Employees, Farm, Job, Motivation, Piggery, Satisfaction.
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Li, Huankai, Yuming Zhong, Qian Lu, Xin Zhang, Qin Wang, Huifan Liu, Zenghui Diao, Chuang Yao, and Hui Liu. "Co-cultivation of Rhodotorula glutinis and Chlorella pyrenoidosa to improve nutrient removal and protein content by their synergistic relationship." RSC Advances 9, no. 25 (2019): 14331–42. http://dx.doi.org/10.1039/c9ra01884k.

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Aiming at treating piggery wastewater and producing useful products, a novel method using a co-culture of Chlorella pyrenoidosa and Rhodotorula glutinis in piggery wastewater was proposed in this study to improve nutrient removal and the protein content in the feed produced.
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KAMEOKA, TOSHINORI. "Treatment of piggery sewage." Nihon Yoton Gakkaishi 26, no. 4 (1989): 283–84. http://dx.doi.org/10.5938/youton.26.283.

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Qi, Fan, Yan Xu, Yi Yu, Xiaosheng Liang, Li Zhang, Hui Zhao, and Haiying Wang. "Enhancing growth of Chlamydomonas reinhardtii and nutrient removal in diluted primary piggery wastewater by elevated CO2 supply." Water Science and Technology 75, no. 10 (February 25, 2017): 2281–90. http://dx.doi.org/10.2166/wst.2017.111.

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The coupling of primary piggery wastewater as a culture medium with elevated CO2 aeration is thought to be an economically feasible option for the cultivation of microalgae. However, little information is available regarding the photosynthetic characteristics of microalgae and nutrient removal from wastewater at different CO2 concentrations. It was found that elevated CO2 aeration provided sustained growth at CO2 concentrations ranging from 5% to 15% and performed best with 5% CO2 aeration in primary piggery wastewater for Chlamydomonas reinhardtii growth. Photosynthesis, respiration, and nutrient uptake (total nitrogen and total phosphorus) were stimulated in response to CO2 enrichment, thus increasing nutrient uptake in primary piggery wastewater, particularly total nitrogen and total phosphorus. A study of carbon-concentrating mechanism-related gene expression revealed that the levels of mRNAs, such as CAH1, LCIB and HLA3, were significantly downregulated. This represents a possible method for the reconciliation of CO2-stimulated growth with mixotrophic cultivation of C. reinhardtii in diluted primary piggery wastewater.
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Stephen Okhumata Dania, Adebimpe Omowumi Ayegbe, and Bright Ehijiele Amenkhienan. "Effect of different rates of sawdust - piggery compost on soil properties and yield of maize in nutrient depleted soil." World Journal of Advanced Engineering Technology and Sciences 3, no. 1 (August 30, 2021): 016–22. http://dx.doi.org/10.30574/wjaets.2021.3.1.0042.

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Compost is an important source of organic fertilizer that can be used to amend degraded soil to improve soil nutrient and crops yield. This experiment was to evaluate the effect of sawdust – piggery compost on soil properties, growth and yield of maize and it was carried out at the Ambrose Alli University Teaching and Research Farm, Emaudo, Ekpoma, Edo State. The experiment was fitted in a Randomized Complete Block Design (RCBD) with seven treatments and three replicates. The treatments were; control (0), 2, 4, 6, 8, 10 and 12 tonnes of sawdust – piggery compost per hectares (ha-1). Data collected were analysed using ANOVA and LSD was used to separate means. Soil nutrients were below critical levels and the application of compost improved fertility status of the soil. Growth parameters, dry matter yield, cob weight, grain yield and nutrient uptake were determined. It was observed that application of Sawdust – piggery compost significantly (p 0.05) increased the growth of maize compared to control. The application of 8 to 12 tonnes of sawdust – piggery compost significantly (p 0.05) increased the plant height, leaf area and stem girth of maize compared to other treatments. The application of 8 to 12 tonnes per hectares (ha-1) of sawdust – piggery compost significantly (p 0.05) increased the cob weight, grain and dry matter yield of maize compared to other treatments, however, the application of 10 t ha-1 of compost to maize increased grain yield of maize than others rate of applications with the yield value of 4.60 t ha-1. The uptake of nitrogen, phosphorus and potassium were higher with application of 12 tonnes of compost. In conclusion, the application rates of 10 t ha-1 of sawdust – piggery compost per hectare on nutrient depleted soils will improve the growth and yield of maize.
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Gavala, H. N., I. V. Skiadas, Nikolaos A. Bozinis, and G. Lyberatos. "Anaerobic codigestion of agricultural industries' wastewaters." Water Science and Technology 34, no. 11 (December 1, 1996): 67–75. http://dx.doi.org/10.2166/wst.1996.0264.

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Wastewaters generated from agricultural industries are usually hard to treat due to a high organic content. The basic treatment process to be used can only be anaerobic digestion, a process with the additional advantages of (i) limited production of stabilized sludge and (ii) utilization of the produced biogas. The cotreatment of such seasonally produced wastewaters is proposed in order to secure the economically favorable and stable year-round operation of a treatment plant, with the additional benefits of smaller capital costs (due to the use of centrally located rather than distributed treatment facilities) and the exploitation of complementarity in waste characteristics (e.g. avoidance of nutrients (N,P) addition when a codigested wastewater contains nutrients in excess). A mathematical model for codigesting piggery, olive-mill and dairy wastewaters was developed based on batch kinetic experiments. An organic loading rate of 3.84 g COD/l·d was found to be safe for a digester operating on a year-round basis, fed sequentially with piggery, piggery-olive-mill and piggery-dairy wastewaters.
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Park, S. M., H. B. Jun, Y. J. Chung, and S. H. Lee. "Biological nitrogen removal using bio-sorbed internal organic carbon from piggery wastewater in a post-denitrification MLE process." Water Science and Technology 49, no. 5-6 (March 1, 2004): 373–86. http://dx.doi.org/10.2166/wst.2004.0777.

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Nitrogen removal from a piggery wastewater was investigated in a post-denitrification modified Lüdzack Ettinger (PDMLE) process. Overall hydraulic retention time (HRT) of the PDMLE, consisting of contact/separator (C/S), nitrification, denitrification and re-aerobic bioreactor was 10 days. 60% of the influent SCOD was separated in the C/S by contacting the return sludge with the synthetic wastewater, however, only 10% of the influent SCOD was separated from the piggery wastewater. Biosorption capacities of the synthetic wastewater and piggery wastewater were 800 and 150 mg/g-MLSS, respectively. In spite of the high organic and nitrogen load, nitrification efficiency was above 95%, and nitrification rate was about 180 mg-NH4+-N/L·day. The removed ΔCOD/Δnitrate ratios in the denitrification tank were 4.0 and 11.5 g-SCOD/g-nitrate, while denitrification rates were 8.4 and 2.6 mg-nitrate/day for synthetic and piggery wastewater, respectively. In the proposed PDMLE process, both bio-sorbed and bypassed organic matter could be successfully used for nitrate reduction as carbon sources and the final TN removal efficiency was as high as 95%.
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Dissertations / Theses on the topic "Piggery"

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Wrigley, Timothy John. "Water quality improvement of piggery effluent." Thesis, Wrigley, Timothy John (1999) Water quality improvement of piggery effluent. PhD thesis, Murdoch University, 1999. https://researchrepository.murdoch.edu.au/id/eprint/52406/.

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An experimental wetland system was constructed to upgrade the water quality of piggery wastewater. Transplanted aquatic macrophytes were successfully established within the wetland. The wetland experiment was concluded prematurely because of continual pipework blockages which prevented wastewater flow into the wetland. The precipitate in the pipework was identified as Struvite, MgNH4PO4.6H2O, a precipitate widely associated with wastewaters and kidney stones. The formation of struvite in the piggery wastewaters indicated that struvite may be an important process in the removal of nutrients. X-ray diffraction of lagoon sludge confirmed that struvite precipitation occurred in the three wastewater lagoons at the piggery. Magnesium, essential for the formation of struvite, entered the waste water system via groundwater used for wash down. Magnesium was also an important food supplement in the feed provided for the pigs. Magnesium coupled with ammonia and phosphorus at pH values greater than nine (9) can produce struvite. Up to 250 tonnes/annum of struvite could be removed from the final piggery effluent under correct pH and dosing conditions. Struvite is a valuable slow release fertilizer, and its formation and removal from wastewaters may be important in the reduction of eutrophication in receiving waters. Laboratory-scale batch and continuous anaerobic digestion of piggery effluent was undertaken. The removal of struvite from solution by chemical dosing with MgSO4 after digestion was determined. During anaerobic digestion of piggery wastewater, COD was reduced by 50%- 90%, as measured by biogas production. Concentrations of PO4-P in the supemate increased during batch digestion (21 to 33 mg/L) while a marked reduction in PO4-P concentration of the supemate from the continuous digestion (21 to 10 mg/L) occurred. The addition of MgSO4 to the supernate reduced PO4-P concentrations from 33 to 7 mg/L (batch) and from 10 to 0.1 mg/L (continuous). Struvite, aphthitalite (K3Na(SO4)2) and thermardite (Na2SO4) were precipitated from solution. A computer model was developed to describe struvite solubility chemistry; this included the electro-neutrality equation which allowed for greater variability in the input components. Relationships between the major ions were retained without approximation. The model results fitted data from both our laboratory results and published values. Equilibrium constants which markedly affect the output were identified and solubility constants derived. The computer model of the solution chemistry of struvite was then improved. Firstly, the algorithm was smaller and faster with ammonia as the prime calculation point in the liquid phase. Secondly, the incorporation of dissolved magnesium hydrogen phosphate (dMHP) in the model significantly increased concentrations in solution. Thirdly, estimates of activity coefficients were included. These improvements made a 5-10% improvement in the fit. This flexible modeling procedure allowed for the ready inclusion of all possible species. The addition of associated ammonium phosphates improved the fit. Estimates of the association constants were included. Applications of the model include waste-water treatment and the formation of kidney stones.
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Smith, Jaydee Howard. "Studies of aerial pollutants in an experimental piggery." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337693.

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Ayre, Jeremy Miles. "Advances in treatment of anaerobic digestate of piggery effluent using microalgae." Thesis, Ayre, Jeremy Miles (2021) Advances in treatment of anaerobic digestate of piggery effluent using microalgae. PhD thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/61539/.

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Microalgae cultivation for treating anaerobic digestates provides advantages over many other treatment options, however the limitations of this emerging technology currently prevent implementation in many cases where it is needed most. Agricultural systems present some of the greatest need. One of the most prominent is in the context of pig farming, which has already seen decades worth of investigation worldwide in this area. Much of this research is yet to realise it’s full potential but seems tantalising close to fruition. The high concentration of nutrients, such as nitrogen - mostly in the form of ammonium which is very volatile and toxic - is both problematic and a rich fertiliser which under the right conditions can enable growth and cultivation of microalgae. The conceptual framework for a system which incorporates uptake of wastewater nutrients and production of harvestable and useful microalgal biomass is sometimes referred to as the third generation biorefinery. Anaerobic digestate of piggery effluent (ADPE) is a very appealing target for such a biorefinery system. The introduction to this dissertation – Chapter 1 looks at a wide range of literature that covers the topic of wastewater treatment using microalgae, with a particular focus toward ADPE specific treatments and concerns. Amongst the microalgae with greatest promise in this context include Scenedesmus sp. and Chlorella sp. varieties. As detailed in Chapter 2, it was found through bioprospecting and outdoor growth investigations that microbial consortia containing these species could grow on undiluted piggery effluent with very high ammonium concentrations up to 1600 mg N NH4 L−1. These experiments demonstrated five weeks of semicontinuous growth using sand-filtered, undiluted ADPE as growth media and found growth rates of around 18.5 mg ash-free dry weight L−1 d−1 and ammonium removal rates up to 63.7 ± 12.1 mg N NH4 L−1. Carbon dioxide addition as a pH control measure was also tested and shown to enhance growth performance by around 17% under these outdoor growth conditions. Further experiments using a closed to the atmosphere laboratory environment demonstrated clean and simple methods to retain ammonium during ADPE microalgae cultivation and prevent ammonia vapour escaping and threatening harm to human and wildlife health. Findings from this research are detailed in Chapter 3. The closed system tested the use of deionised water and recirculated airflow in order to successfully retain virtually all of the ammonia gas which would otherwise be lost. Lower starting pH conditions provided the benefit of keeping more ammonia in the form of less toxic ammonium dissolved in ADPE. Surprisingly, this system was also found to have sufficient carbon reserves within the ADPE growth media, negating the need to add an extrinsic carbon source. Additional indoor growth experiments investigated relationships between bacteria and microalgae during this microalgae cultivation wastewater treatment process. These findings – documented in Chapter 4 revealed dynamic changes across many bacterial phyla. Assessments of functional genes predicted during cultivation were also performed using the in-silico toolkit - Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt), which was able to inform of the role bacteria play in cycling of nitrogen and carbon compounds during the wastewater treatment process. These data offer insights into the microbial population dynamics which include the revelation of dominant bacterial phyla Bacteroidetes and Proteobacteria, decreases in bacterial richness and diversity as wastewater treatment proceeded and indicators of symbiotic relationships forming with a number of bacterial phyla including Bacteriodetes and Cyanobacteria. Additionally the key pathways favoured by the microalgae-microbial consortia are NH4 and NO2− removal possibly via nitrification and nitrifier denitrification pathways while accumulating NO3− in inoculated diluted digestate treatment systems. In the absence of inoculation and at high ammonium concentrations in the digestate, NH4 , NO2− and NO3− are almost completely eliminated from the system via a combination of microbial N assimilation and denitrification. Finally, in Chapter 5 investigations into the nutritional profile and potential use of the harvested and dried microalgae biomass for application as a feed for livestock, aquaculture or other uses are outlined. Pathogenic test results were favourable, crude protein of ADPE-grown microalgae was higher than full fat soybeans but was much lower than conventional soybean meals, net energy values of ground and bead-milled algae samples were found to be comparable to that of deshelled sunflower meal commonly used in pig feed, and favourable omega-3:omega-6 ratio of ∼1.9 was found, indicating suitability for inclusion into pig or other animal diets. General conclusions which are informed by these experiments and summarised in Chapter 6 find that not only are Scenedesmus sp. and Chlorella sp. currently among the optimal candidates for treatment of minimally or undiluted piggery digestate, but that cultivation systems can be customised toward specific needs such as closed growth conditions which allow for very high proportions of ammonium capture, or larger scale outdoor growth systems where ammonia losses might be less of a concern for some cultivation environments. Under long term outdoor conditions the benefits of incorporating carbon capture and pH adjustments using carbon dioxide have been demonstrated and provide a good foundation for further research using these methods. These studies have also shown that beneficial relationships can form between microalgae and bacterial populations, and these interactions may be a fruitful target for research which aims toward optimisation of health and stability of microalgae based wastewater treatment cultivation conditions. In addition, the microalgae of harvested and dried algal biomass shows indications of being an adequate supplement for inclusion into animal feed. Overall, this PhD dissertation addresses many critical points of concern regarding the treatment of high strength anaerobic digestates such as ADPE using microalgae cultivation.
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Girard, Matthieu. "Treatment of methane and swine slurry from the piggery industry by biofiltration." Thèse, Université de Sherbrooke, 2012. http://hdl.handle.net/11143/6126.

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Abstract: The piggery industry is very important in Canada, but localized production of large quantities of swine slurry causes severe environmental problems such as aquatic pollution and emissions of methane, a potent greenhouse gas. There are many technologies that can reduce the impact of these issues, but biofiltration is the only viable process that can treat both pollutants. The main objectives of this thesis are to study the biofiltration of methane at concentrations representative of the piggery industry and to achieve the simultaneous treatment of methane and swine slurry with a single biofilter. Laboratory-scale experiments were used to better understand the biofiltration of methane from the piggery industry. Using an inorganic filter bed, it was possible to reach a maximum elimination capacity of 14.5 ± 0.6 g·m -3 ·h-1 for an inlet load of 38 ± 1 g·m -3 ·h-1 . The removal efficiency was relatively stable with the methane concentration and the biofilter satisfied first order kinetics. By decreasing the nitrate concentration in the nutrient solution, a concentration of 0.1 gN·L-1 proved to be sufficient for proper biofilter operation. Furthermore, once all inorganic sources of nitrogen were removed, the presence of microorganisms capable of fixing atmospheric nitrogen was established. Carbon and nitrogen mass balances suggested that the carbon accumulated within the biofilter was probably used for the production of storage compounds rather than for cell synthesis. The viability of simultaneously treating methane and swine slurry was demonstrated by using an innovative biofilter design to overcome the inhibition of methane biodegradation by swine slurry. Although generally less efficient than the biofiltration of methane alone, an elimination capacity for methane of 18.8 ± 1.0 g·m -3 ·h-1 was obtained with this system at an inlet load of 46.7 ± 0.9 g·m -3 ·h-1 . Pure fungal strains were used in an attempt to improve performance, but no significant increase in the methane removal efficiency was observed. For swine slurry treatment, average removal efficiencies of 67 ± 10 % for total organic carbon and 70 ± 7 % for ammonium were achieved. The influence of the slurry supply was analyzed and the ideal supply method found in this study was 6 doses of 50 ml per day. Pilot-scale tests carried out directly on a pig farm were used to validate the results obtained in the laboratory for the treatment of methane from swine house ventilation air. After a start-up period of 30 days, removal efficiencies up to 83% were observed for a methane inlet load of 1.6 ± 0.8 g·m -3 ·h-1 . Treated swine slurry was tested as a replacement for the synthetic nutrient solution, but due to inhibitory compounds in the treated slurry, the results were not satisfactory. For the simultaneous treatment, the methane removal efficiency only dropped from 58 ± 5% to 53 ± 8% when slurry was supplied to the biofilter. By integrating the results obtained in this study with modern farming techniques, the piggery industry could reduce its greenhouse gas emissions and treat part of the nutrients in swine slurry.||Résumé: L'industrie porcine est très importante au Canada, mais les conditions d'entreposage et l'épandage excessif du lisier de porc contribuent respectivement aux émissions de méthane, un puissant gaz à effet de serre, et à la pollution de l'eau. II existe de nombreuses techniques pour atténuer ces problématiques, mais le procédé de biofiltration s'impose comme étant capable de traiter le méthane et le lisier. Les objectifs principaux de cette thèse sont d'étudier la biofiltration du méthane à des concentrations représentatives de l'industrie porcine et d'effectuer le traitement simultané du méthane et du lisier de porc dans un même biofiltre. Des essais expérimentaux à l'échelle laboratoire ont permis de mieux comprendre la biofiltration du méthane issu de l'industrie porcine. En utilisant un lit filtrant inorganique, il a été possible d'atteindre une capacité d'élimination maximale de 14,5 ± 0.6 g[indice supérieur .]m[indices supérieurs -3.]h[indices supérieurs -1] pour une charge à l'entrée de 38 ± 1 g[indice supérieur .]m[indices supérieurs -3.]h[indices supérieurs -1]. L'efficacité d'enlèvement était relativement stable en fonction de la concentration de méthane et le biofiltre présentait une cinétique de premier ordre. En diminuant la concentration de nitrate dans la solution nutritive, une concentration de 0,1 gN[indice supérieur .]L[indice supérieur -1] s'est avérée suffisante pour assurer l'opération adéquate du biofiltre. De plus, en éliminant tout apport d'azote inorganique, la présence de microorganismes capables de fixer l'azote atmosphérique a été établie. Des bilans de masse sur le carbone et l'azote ont illustré que le carbone accumulé dans le biofiltre était utilisé pour la production de matières de stockage plutôt que pour la synthèse cellulaire. La viabilité de traiter simultanément le méthane et le lisier a été démontrée en utilisant un design innovateur de biofiltre pour éviter l'inhibition de la biodégradation du méthane par le lisier. Quoique généralement moins performant que la biofiltration du méthane seul, ce système a permis d'obtenir une capacité d'élimination de méthane de 18.8 ± 1.0 g[indice supérieur 1]m[indices supérieurs -3.]h[indices supérieurs -1] pour une charge de 46.7 ± 0.9 g[indice supérieur .]m[indices supérieurs -3.]h[indices supérieurs -1]. Des souches pures de champignons ont été utilisées afin d'améliorer la performance, mais aucun effet significatif n'a été observé. Pour le traitement du lisier de porc, des taux d'enlèvement moyens de 67 ± 10 % pour le carbone organique total et de 70 ± 7 % pour l'ammonium ont été obtenus. L'influence de l'alimentation en lisier a été analysée et le mode d'alimentation idéal fut de 6 doses de 50 ml par jour. Des essais à l'échelle pilote effectués directement sur une ferme porcine ont permis de valider les résultats obtenus au laboratoire pour le traitement du méthane dans l'air de ventilation d'un bâtiment d'élevage. Après une phase de démarrage de 30 jours, des efficacités d'épuration jusqu'à 83% ont été observées pour une charge de méthane à l'entrée de 1.6 ± 0.8 g[indice supérieur .]m[indices supérieurs -3.]h[indices supérieurs -1]. Du lisier de porc traité a été testé pour remplacer la solution nutritive synthétique, mais dû à la présence de composés inhibiteurs dans le lisier traité, les résultats obtenus n'étaient pas satisfaisants. Pour le traitement simultané, l'efficacité d'épuration du méthane a seulement diminué de 58 ± 5% a 53 ± 8 % lorsque le lisier a été alimenté au biofiltre. En intégrant les résultats de cette étude aux techniques agricoles modernes, l'industrie porcine pourrait réduire ses émissions de gaz à effet de serre et traiter une partie des nutriments du lisier de porc.
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Webb, Kelvin March. "The solubility of struvite and its application to a piggery effluent problem." Thesis, Webb, Kelvin March (1988) The solubility of struvite and its application to a piggery effluent problem. PhD thesis, Murdoch University, 1988. https://researchrepository.murdoch.edu.au/id/eprint/37804/.

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This project was commenced to research problems observed with a large piggery near Mandurah, Western Australia. These problems were caused by the deposition of a bio-mineral magnesium salt, struvite (MgNH4PO4.6H20), within the waste treatment system of the piggery. A review of previous research on struvite properties relevant to this project was firstly conducted, indicating the need for determination of more appropriate solubility data for struvite formation in solution. Experiments to monitor conditions at the piggery were the next stage in research. Laboratory solubility experiments were then commenced. These were at a temperature of 30oC and pH values between 6.5 and 8.5. Data were analysed as the conditional solubility constant Ps defined as below, Ps = [Mg]tX[Nh4]tX[PO4]t A qualitative comparison of field and laboratory solubility data indicates struvite may precipitate from the third and fourth lagoons in the treatment systems, and possibly the second lagoon. These inferences are by no means conclusive, and further Ps data over differing experimental conditions are required to fully explain the problem and its solution.
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Sohn, Jae Ho. "Process studies of odour emissions from effluent ponds using machine-based odour measurement." University of Southern Queensland, Faculty of Engineering and Surveying, 2005. http://eprints.usq.edu.au/archive/00001511/.

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Odours caused by intensive piggery operations have become a major environmental issue in the piggery industry in Australia. Effluent ponds are the major source of odours in typical piggeries. It is assumed that the odour emissions from ponds are mainly driven by pond loading rate. However, there are few data to corroborate this concept. Allied to this is the need for a convenient and low cost method of odour measurement, which can be used as an alternative method for current olfactometry. The present odour measurement methods using olfactometry is time-consuming, expensive and often impractical because of its fundamental problem of using subjective human panels. In addition, one of the major problems in odour measurement lies in the air sampling method. Wind tunnels have been accepted as a preferred method for the sampling of odour from area sources. However, current wind tunnels do not consider meteorological factors, which directly affect the odour emission rates. A machine-based odour quantification method and a novel wind tunnel were developed and evaluated in this Ph D study. These methods were then used in a demonstration trial to investigate the effects of pond loading rate on odour emissions. The AromaScan A32S electronic nose, and an artificial neural network were used to develop the machine based odour quantification method. The sensor data analysed by the AromaScan were used to train an ANN, to correlate the responses to the actual odour concentration provided by a human olfactometry panel. Preprocessing techniques and different network architectures were evaluated through network simulation to find an optimal artificial neural network model. The simulation results showed that the two-layer back-propagation neural network can be trained to predict piggery odour concentrations correctly with a low mean squared error. The trained ANN was able to predict the odour concentration of nine unknown air samples with a value for the coefficient of correlation, r2 of 0.59. A novel wind tunnel was developed for odour sampling. The USQ wind tunnel was designed to have a capability to control wind speed and airflow rate. The tunnel was evaluated in terms of the aerodynamics of the airflow inside the tunnel, nd the gas recovery efficiency rate, in order to further improve the performance of the wind tunnel. The USQ wind tunnel showed that sample recovery efficiencies ranging from 61.7 to 106.8%, while the average result from the entire trial was 81.1%. The optimal sample recovery efficiency of the tunnel was observed to be 88.9% from statistical analysis. Consequently, it can be suggested that the tunnel will give estimates of the odour emission rate with significant level of precision. However, the tunnel needs to be calibrated to compensate for the error caused by different airflow rates and odour emission rates. In addition, the installation of a perforated baffle upstream of the sampling section was suggested to improve its performance. To investigate the relationship between the pond loading rate and odour emission rate, replicable experimental studies were conducted using a novel experimental facility and the machine based odour quantification method. The experimental facility consisted of reactor vessels to simulate the operation of effluent ponds and the USQ wind tunnel for odour sampling. A strong relationship between organic loading rate (OLR) and physical and chemical parameters was observed except pH and NH3-N. The pH was not affected by OLR due to the buffering capacity of piggery effluent. EC and COD were suggested as indicators to estimate the operating condition of the piggery effluent ponds because the regression results show that these two parameters can be predicted accurately by OLR. The time averaged odour emission rates from the reactor vessels showed a strong relationship with OLR. Consequently, it can be concluded that heavily loaded effluent ponds would produce more odours. The effect of hydraulic retention time (HRT) was examined. The HRT was increased from 30 days to 60 days, resulting in a significant decrease in odour emission rates from the reactor vessels. This decrease ranged from 59.1% to 54.9%, with an average of 57.1%. Therefore, it can be concluded that the increasing HRT will decrease the odour emission rate. This trial confirmed the value of the project methodology in obtaining unambiguous data on odour emission processes. However, more data are required for a wider range of OLR, HRT and other pertained variables before a usable model can be formulated.
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Galvin, Geordie. "Comparison of on-pond measurement and back calculation of odour emission rates from anaerobic piggery lagoons." University of Southern Queensland, Faculty of Engineering and Surveying, 2005. http://eprints.usq.edu.au/archive/00001426/.

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Odours are emitted from numerous sources and can form a natural part of the environment. The sources of odour range from natural to industrial sources and can be perceived by the community dependant upon a number of factors. These factors include frequency, intensity, duration, offensiveness and location (FIDOL). Or in other words how strong an odour is, at what level it becomes detectable, how long it can be smelt for, whether or not the odour is an acceptable or unacceptable smell as judged by the receptor (residents) and where the odour is smelt. Intensive livestock operations cover a wide range of animal production enterprises, with all of these emitting odours. Essentially, intensive livestock in Queensland, and a certain extent Australia, refers to piggeries, feedlots and intensive dairy and poultry operations. Odour emissions from these operations can be a significant concern when the distance to nearby residents is small enough that odour from the operations is detected. The distance to receptors is a concern for intensive livestock operations as it may hamper their ability to develop new sites or expand existing sites. The piggery industry in Australia relies upon anaerobic treatment to treat its liquid wastes. These earthen lagoons treat liquid wastes through degradation via biological activity (Barth 1985; Casey and McGahan 2000). As these lagoons emit up to 80 per cent of the odour from a piggery (Smith et al., 1999), it is imperative for the piggery industry that odour be better quantified. Numerous methods have been adopted throughout the world for the measurement of odour including, trained field sniffers, electronic noses, olfactometry and electronic methods such as gas chromatography. Although these methods all have can be used, olfactometry is currently deemed to be the most appropriate method for accurate and repeatable determination of odour. This is due to the standardisation of olfactometry through the Australian / New Zealand Standard for Dynamic Olfactometry and that olfactometry uses a standardised panel of "sniffers" which tend to give a repeatable indication of odour concentration. This is important as often, electronic measures cannot relate odour back to the human nose, which is the ultimate assessor of odour. The way in which odour emission rates (OERs) from lagoons are determined is subject to debate. Currently the most commonly used methods are direct and indirect methods. Direct methods refer to placing enclosures on the ponds to measure the emissions whereas indirect methods refer to taking downwind samples on or near a pond and calculating an emission rate. Worldwide the odour community is currently divided into two camps that disagree on how to directly measure odour, those who use the UNSW wind tunnel or similar (Jiang et al., 1995; Byler et al., 2004; Hudson and Casey 2002; Heber et al., 2000; Schmidt and Bicudo 2002; Bliss et al., 1995) or the USEPA flux chamber (Gholson et al., 1989; Heber et al., 2000; Feddes et al., 2001; Witherspoon et al., 2002; Schmidt and Bicudo 2002; Gholson et al., 1991; Kienbusch 1986). The majority of peer reviewed literature shows that static chambers such as the USEPA flux chamber under predict emissions (Gao et al., 1998b; Jiang and Kaye 1996) and based on this, the literature recommends wind tunnel type devices as the most appropriate method of determining emissions (Smith and Watts 1994a; Jiang and Kaye 1996; Gao et al., 1998a). Based on these reviews it was decided to compare the indirect STINK model (Smith 1995) with the UNSW wind tunnel to assess the appropriateness of the methods for determining odour emission rates for area sources. The objective of this project was to assess the suitability of the STINK model and UNSW wind tunnel for determining odour emission rates from anaerobic piggery lagoons. In particular determining if the model compared well with UNSW wind tunnel measurements from the same source; the overall efficacy of the model; and the relationship between source footprint and predicted odour emission rate.
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Miranda, Adélia Pereira [UNESP]. "Suínos em diferentes fases de crescimento alimentados com milho ou sorgo: desempenho, digestibilidade e efeitos na biodigestão anaeróbia." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/104907.

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Made available in DSpace on 2014-06-11T19:33:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-02-20Bitstream added on 2014-06-13T19:23:36Z : No. of bitstreams: 1 miranda_ap_dr_jabo.pdf: 553828 bytes, checksum: d736c8d07571b50750a6e56f01d50fae (MD5)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Avaliaram-se dietas formuladas com milho ou sorgo para suínos nas fases inicial, crescimento e terminação sobre o desempenho dos animais, digestibilidade dos nutrientes, produção e características de fezes e urina e biodigestão anaeróbia dos dejetos. No ensaio de desempenho não foram verificadas diferenças quanto ao consumo médio diário de ração, ganho médio diário de peso e conversão alimentar. Foi realizado um ensaio de digestibilidade em cada fase de crescimento dos animais utilizando o método de coleta total de fezes, não se observando diferenças para coeficientes de digestibilidade da matéria seca e da energia bruta, coeficiente de metabolizabilidade, energia digestível e metabolizável. Os maiores coeficientes de digestibilidade da proteína bruta e proteína digestível foram verificados nos animais alimentados com dietas à base de milho na fase terminação. Para animais alimentados com dietas formuladas com sorgo foram verificados maiores valores de matéria seca digestível nas fases crescimento e terminação. Verificou-se maior produção média de fezes para animais alimentados com dietas formuladas com sorgo, gerando maiores coeficientes de resíduo. Os maiores teores de sólidos totais e voláteis foram verificados nas fezes de animais alimentados com dieta à base de milho, em todas as fases de crescimento. As concentrações médias dos nutrientes nas fezes e na urina variaram entre os tratamentos e fases. O abastecimento de 20 biodigestores indicou maiores reduções nos teores de sólidos voláteis e maiores produções de biogás quando se utilizaram fezes de suínos alimentados com dietas formuladas à base de milho. As concentrações médias dos nutrientes no afluente e efluente dos biodigestores variaram entre os tratamentos e fases.
There were evaluated diets formulated with corn or sorghum for pigs in the initial stages, growing and finishing on the growth performance of animals, digestibility of nutrients, production and characteristics of feces and urine and anaerobic digestion of pigs manure. In the test of growth performance were not found differences in the average daily consumption of feed, average daily weight gain and feed conversion. There was performed a test of digestibility at each stage of growth of animals using the total collection of feces, no difference was observed for digestibility coefficients of dry matter and gross energy, coefficient to metabolize, digestible and metabolizable energy. The highest rates of digestibility of crude protein and digestible protein were observed in animals fed with diets based on corn in the finishing stage. For animals fed diets formulated with sorghum there were observed higher values of digestible dry matter in growing and finishing phases. There was a greater average production of feces by animals fed with diets based on sorghum, generating higher coefficient of waste. The highest levels of total and volatile solids were found in the feces of animals fed with diets containing corn, in all the stages of growth. The average concentrations of minerals in feces and urine varied among treatments and stages. The supply of 20 anaerobic digesters indicated greater reductions in the volatile solids levels and greater production of biogas when using waste from pigs fed with diets based with corn. The average concentrations of minerals in the affluent and effluent in the anaerobic digesters varied among treatments and stages.
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Greatorex, James Michael. "Continuous aerobic processing of piggery effluent : a new approach to quantifying the fate of the nitrogen component." Thesis, University of Birmingham, 1995. http://etheses.bham.ac.uk//id/eprint/1410/.

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The primary objective was the preparation of a complete mass balance around an aerobic treatment system for pig slurry, to quantify the various forms of nitrogen entering and leaving under different conditions. The purpose of this was to assess the effect of such treatment conditions in terms of the amount of polluting forms of nitrogen generated from the slurry. A laboratory scale reactor (designed for this study) was operated under three separate residence times of 2, 4, and 8 days, and aeration level indicated by a redox value in the range of E\(_{Ag/AgCl}\) = +100 to +200 mV; the latter two giving nitrifying conditions. Emissions of di-nitrogen gas are a major component of a nitrogen mass balance, yet one which has been often neglected because of difficulties in distinguishing it from that in the atmosphere. A novel technique was developed in which atmospheric N\(_2\) in the reactor headspace was removed by flushing the system with an 80/20 gas mixture of argon/oxygen. This left microbially derived N\(_2\) available for collection and analysis by mass spectrometry. Established methods were applied for the measurement of other gaseous nitrogen emissions (NH\(_3\), N\(_2\)O, NO) and other forms of nitrogen in the slurry (organic-N, NH\(_4^+\), NO\(_2^-\) and NO\(_3^-\)). The steam distillation technique for nitrite and nitrate was found to be unreliable, therefore, high performance liquid chromatography was used as an alternative. The existence of the intermediate nitrified N form of hydroxylamine is postulated but was not quantified in this study. The presence of unidentified components in raw slurry was investigated using HPLC, but only chloride and acetate could be recognised with a high degree of confidence. Mean N\(_2\) concentrations measured were 774 mg l\(^{-1}\) in the 4 day treatment and 523 mg l\(^{-1}\) in the 8 day treatment. Emissions of the environmentally damaging N\(_2\)O gas were quantified as being 514 mg l\(^{-1}\) in the 4 day treatment and 219 mg l\(^{-1}\) in the 8 day. The lower emissions from the 8 day treatment are attributed to improved contact between oxygen and slurry, reducing the prevalence of zones favourable for denitrification. In the final mass balance study, overall nitrogen leaving the system equalled 86 (±18) % of that entering in the 2 day treatment, 113 (±10) % in the 4 day treatment, and 104 (±21) % in the 8 day treatment. The variation in values was attributed to errors in the liquid phase analysis of slurry nitrogen compounds.
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Vu, Thi Nguyet, Van Tua Tran, Dinh Kim Dang, Thi Kim Anh Bui, and Hai Yen Vu. "Application of ecological technology for removal of COD, nitrogen and phosphorus from piggery wastewater after biogas production technology." Technische Universität Dresden, 2016. https://tud.qucosa.de/id/qucosa%3A32627.

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Despite a positive contribution to economic – social development, the growth of piggeries has caused heavily environmental pollution. Currently, treated wastewater of pig farms unfortunately does not meet the national discharge standards yet. This paper presents some research results on the removing COD, nitrogen and phosphorus in piggery wastewater after anaerobic (biogas) process at pilot scale by the combined system using Phragmites australis, Cyperus alternifolius, Vetiveria zizanioides and Eichhornia crassipes. The experimental results showed that the wastewater loading rate of 47.35 l/m2.day with initial concentrations of 203.24 mg COD/l, 111.94 mgTN/l and 13.61 mgTP/l gave removal efficiency of 71.66 %, 79.26 % and 69.65 %, respectively. Thus, the removed quantity of total nitrogen (TN) and total phosphorus (TP) was of 4201.35 mg TN/m2.day và 448.76mg TP/m2.day. The obtained results indicated that the flow wetland system, using Phragmites australis, Cyperus alternifolius, Vetiveria zizanioides and Eichhornia crassipes has a rather high COD, TN and TP removal efficiency with simple operation so that it could be feasible if applied for treating pig wastewater. However, the system should be functioned longer for taking data and for evaluating its stability.
Mặc dù có những đóng góp tích cực cho sự phát triển kinh tế - xã hội, việc phát triển chăn nuôi lợn đã gây ô nhiễm môi trường nghiêm trọng. Hiện nay, nước thải chăn nuôi lợn từ các cơ sở chăn nuôi sau xử lý vẫn chưa đáp ứng được các tiêu chuẩn thải của quốc gia và tiêu chuẩn ngành. Bài báo này trình bày kết quả nghiên cứu về khả năng loại bỏ COD, nitơ (N) và phôtpho (P) trong nước thải chăn nuôi lợn đã qua xử lý bằng hầm biogas của hệ thống phối hợp cây Sậy, Thủy Trúc, cỏ Vetiver và Bèo Tây ở qui mô pilot. Kết quả thực nghiệm ở tải lượng 47,35 l/m2.ngày, với COD, tổng nitơ (TN) và tổng phôtpho (TP) đầu vào trung bình là 203,24 mg/l, 111,94 mg/l và 13,61 mg/l, tương ứng, thì hiệu suất xử lý lần lượt là 71,66 %; 79,26 % và 69,65 %. Như vậy lượng TN và TP loại bỏ là 4201,35 mgN/m2.ngày và 448,76 mgP/m2.ngày. Kết quả nhận được cho thấy hệ thống sử dụng cây Sậy, Thủy Trúc, cỏ Vetiver và Bèo Tây có hiệu quả loại bỏ COD, TN và TP khá cao trong khi vận hành đơn giản nên có triển vọng áp dụng trong điều kiện thực tế để xử lý nước thải chăn nuôi lợn. Tuy nhiên để đánh giá tính ổn định, hệ thống cần được hoạt động với thời gian lâu dài hơn.
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Books on the topic "Piggery"

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Sahukar, Dr Chandra Shekhar. Piggery India Year Book-2000. 2nd ed. New Delhi (INDIA): Scientific Publishers & Distributors, C-375, DDA Flats, East Loni Road, Delhi-110093 (INDIA) scientificpublishers@gmail.com, 2000.

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Department of Agriculture. Management programme for small farm piggery. Pretoria , South Africa: Department of Agriculture, 2008.

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Limited, Marenco Engineering. Proposed piggery lagoon, Kensington, P.E.I.: Geotechnical investigation. Charlottetown: Marenco Englieering, 1991.

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ill, Holder Jimmy, ed. Pig, Pigger, Piggest. Salt Lake City: Gibbs-Smith, 1997.

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Walton, Rick. Pig, pigger, piggest: An adventure in comparing. Salt Lake City, Utah: Gibbs Smith, 2011.

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Greatorex, James Michael. Continuous aerobic processing of piggery effluent: A new approach to quantifying the fate of the nitrogen component. Birmingham: University of Birmingham, 1995.

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Skelton, Robin. Higgledy piggledy. Vancouver: Pulp Press, 1992.

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Mitton, Tony. Riddledy piggledy. Oxford: David Fickling Books, 2003.

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Wood, Douglas. Higgledy piggledy bankruptcy. Manchester: Manchester Business School, 1987.

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Inches, Alison. Piggley helps out. New York: Simon Spotlight, 2005.

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Book chapters on the topic "Piggery"

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Olukanni, David O., and Chukwuebuka N. Ojukwu. "Biogas Recovery from Poultry and Piggery Waste." In Biomethane through Resource Circularity, 83–95. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003204435-9.

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Christoulas, D. G., A. Andreadakis, and A. Kouzeli-Katsiri. "Biological Treatment of Piggery Wastes in Oxidation Ditches." In Appropriate Waste Management for Developing Countries, 227–34. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2457-7_16.

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Bicudo, J. R., and L. F. Madureira. "Treatment of Piggery Wastes in Portugal: A General Overview." In Water Pollution: Modelling, Measuring and Prediction, 579–93. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3694-5_41.

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Wang, Runtao, Fang Yang, Ming Li, Lei Tian, and Yu Zhang. "Cooling Wet-Pad Fan Control System of Piggery Based on Zigbee." In Computer and Computing Technologies in Agriculture V, 147–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27281-3_19.

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Chen, Chunling, Xiaofeng Wang, Tongyu Xu, and Yong Yang. "Numerical Simulation of Natural Ventilation Intypical Piggery of South-East China." In Computer and Computing Technologies in Agriculture II, Volume 3, 2091–99. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-1-4419-0213-9_60.

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Banhazi, Thomas. "Airborne pollutant concentrations within and emission rates from Australian piggery buildings." In Air Quality and Livestock Farming, 141–52. Boca Raton : CRC Press/Balkema, 2018. | Series: Sustainable energy developments ; Volume 15: CRC Press, 2018. http://dx.doi.org/10.1201/9781315738338-9.

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Kodesia, Akriti, Arun Kumar Chatterjee, Vivek Sharma, and Moushumi Ghosh. "Application of Klebsiella pneumoniae in Treatment and Electricity Generation from Piggery Solid Wastes." In Handbook of Solid Waste Management, 2139–52. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-4230-2_83.

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Kodesia, Akriti, Arun Kumar Chatterjee, Vivek Sharma, and Moushumi Ghosh. "Application of Klebsiella pneumoniae in Treatment and Electricity Generation from Piggery Solid Wastes." In Handbook of Solid Waste Management, 1–14. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-7525-9_83-1.

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Banhazi, T., and D. Rutley. "Constructing better piggery buildings by identifying factors contributing to improved thermal control under hot climatic conditions." In Livestock housing, 237–58. The Netherlands: Wageningen Academic Publishers, 2013. http://dx.doi.org/10.3920/978-90-8686-771-4_12.

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Banhazi, Thomas. "Temperature, relative humidity, noise, dust and odor levels recorded on free-range piggery sites in three states of Australia." In Air Quality and Livestock Farming, 113–39. Boca Raton : CRC Press/Balkema, 2018. | Series: Sustainable energy developments ; Volume 15: CRC Press, 2018. http://dx.doi.org/10.1201/9781315738338-8.

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Conference papers on the topic "Piggery"

1

Chen, Chang-hong. "Environmental Pollution and Control Countermeasures of Piggery Industry." In 2010 International Conference on E-Business and E-Government (ICEE). IEEE, 2010. http://dx.doi.org/10.1109/icee.2010.1001.

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Jiahao, Li, Liu Feifei, Wu Xinyu, Tang Xueyu, and Chen Xinyu. "Piggery robot monitoring system based on Kalman fusion algorithm." In 2021 China Automation Congress (CAC). IEEE, 2021. http://dx.doi.org/10.1109/cac53003.2021.9727323.

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RZEŹNIK, Wojciech, Ilona RZEŹNIK, and Paulina MIELCAREK. "IMPACT OF USING PHOTOVOLTAIC PANELS IN PIGGERY ON GREENHOUSE GASES EMISSION." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.089.

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Farm buildings have a large number of unused roofs, where photovoltaic panels may be installed without limiting the agricultural land. In piggeries the largest demand for electricity has the ventilation system. The daily distribution of electricity demand is correlated to the diurnal variation of solar radiation. This allows immediate use the energy produced by photovoltaic panels. The aim of the study was to determine the energy demand of the ventilation system, to design a photovoltaic system for its operation and to determine the CO2 emission reduction. The research was carried out for the deep-litter piggery located in Poland. The demand for electricity was determined on the basis of three-year measurements of electricity consumption in the studied piggery. The photovoltaic system was designed to power the ventilation system. Mean annual demand was 26046 kWh. The designed PV system has power of 27 kWp (23984 kWh yr-1). Energy deficits (4591 kWh·yr-1) were noted for 8 months, and energy surpluses (2528 kWh·yr-1) for 4 months in a year. The reduction of CO2 emissions resulting from the use of a photovoltaic system to supply the ventilation system is 19.1 Mg CO2·yr-1 and represents 3% of the total greenhouse gases emissions from the piggery, expressed in CO2 equivalent. It may increase to 8.6% in case of installing the maximum number of PV panels system (maximum power of 78 kWp; total energy production 68526 kWh yr-1) on the southern part of the roof, but it requires the financial support for renewable energy by the government.
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C M Ouellet-Plamondon, E J McGahan, P J Watts, A S Skerman, and S Birchall. "Piggery Manure Estimation and Measurement for Methane Recovery in Australia." In 2009 Reno, Nevada, June 21 - June 24, 2009. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2009. http://dx.doi.org/10.13031/2013.26961.

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Hiroyuki, H., and S. Toru. "Nitrogen and phosphorus recovery from a piggery wastewater treatment facility." In 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484). IEEE, 2003. http://dx.doi.org/10.1109/vetecf.2003.239927.

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"Assessment of N2O generation during NH3 biofiltration of piggery air." In 2014 ASABE International Meeting. American Society of Agricultural and Biological Engineers, 2014. http://dx.doi.org/10.13031/aim.20141888354.

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Hiroyuki and Toru. "Nitrogen and phosphorus recovery from a piggery wastewater treatment facility." In 2003. 3rd International Symposium on Environmentally Conscious Design and Inverse Manufacturing - EcoDesign'03. IEEE, 2003. http://dx.doi.org/10.1109/ecodim.2003.1322707.

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Zhang, Z. J., C. H. Xu, T. Zhu, T. Nozaki, L. L. Zhao, and K. Morita. "Anaerobic Treatment Piggery Wastewater in an Integrated Two-phase Anaerobic Reactor." In 2007 2nd IEEE Conference on Industrial Electronics and Applications. IEEE, 2007. http://dx.doi.org/10.1109/iciea.2007.4318539.

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Mossad, Ruth. "Numerical Modelling of Air Temperature and Velocity in a Forced and Free Ventilation Piggery." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/htd-24328.

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Abstract Pigs are subjected to intensive environment control and management for higher productivity due to their sensitivity to climatic variation, which affects their growth. The aim of the current work is to numerically model the air speed and temperature in forced and free ventilation piggeries to achieve optimum environmental control. A steady two-dimensional numerical model including the effect of buoyancy, turbulence and heat generated by the pigs was solved using the computational fluid dynamics software Fluent, which is based on the integral volume method. In the forced ventilation case, air speed and temperature inside the piggery and at the pigs’ level were predicted for three different locations of ventilation opening, variable air inlet velocities (in the range 0.3 m/s – 7 m/s), and insulated or non insulated external walls, for ambient temperatures of 5 °C and 32 °C. In the free ventilation case, temperature and air speed at the pig’s level were predicted for a particular wind speed and direction, and some variations in the design. These variations were adding louvers in the air opening, lowering the outer wall of the piggery and changing the type of pen fence used. These results helped to identify problems in the design and offer suggestions for improvements.
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Netinant, Paniti, Anirut Niratsoke, and Meennapa Rukhiran. "Beyond Traditional Piggery to Automation Farm System Based on Internet of Things." In ICEEG '21: 2021 The 5th International Conference on E-Commerce, E-Business and E-Government. New York, NY, USA: ACM, 2021. http://dx.doi.org/10.1145/3466029.3466040.

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Reports on the topic "Piggery"

1

Bernstein, Asaf, and Peter Koudijs. The Mortgage Piggy Bank: Building Wealth through Amortization. Cambridge, MA: National Bureau of Economic Research, March 2021. http://dx.doi.org/10.3386/w28574.

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