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Dimensioning of an Anaerobic Digester for the Treatment of Chicken Manure and for the Production of Biogas: The Case Study of a Chicken Farm in Yaokokoroko (Côte d’Ivoire)

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Green and Sustainable Chemistry 2022年第4期12卷 91-103页

作者： kouakou Adjoumani Rodrigue Ehouman Ahissan Donatien Konan Affoué Tindo Sylvie Teki Adjoba Marie-Emmanuelle Kouadio Marc Cyril adou kouakou eric Konan Gbangbo Remis Laboratoire de Thermodynamique et de Physico-Chimie du Milieu (LTPCM) UFR Sciences Fondamentales Appliquées Université Nangui Abrogoua Abidjan C&#244 te d’Ivoire Département de Formation et de Recherche des Sciences de la Terre et des Ressources Minières Ressources en Eaux et Risques Hydrologiques Institut National Polytechnique Felix Houphou&#235 t-Boigny Yamoussoukro C&#244 te d’Ivoire Institut de Recherche sur les Energies Nouvelles Université Nangui Abrogoua Abidjan C&#244 te d’Ivoire Laboratoire des Procédés Industriels de Synthèse de l’Environnement et des énergies Nouvelles (LAPISEN) Institut National Polytechnique Houphou&#235 t-Boigny Yamoussoukro C&#244 te d’Ivoire

This study allowed us to highlight the level of pollution of a BAYA River water near several poultry farms and the sizing of an anaerobic digester that will be able to treat chicken manure from a poultry farm (BRIN FOUNDATION). To evaluate this pollution, the parameters such as ammonium (NH4+), Phosphate (PO43-), Biochemical Oxygen Demand (DBO5) and Nitrate (NO3-) were determined. For sampling point P1, the concentrations in mg/L of these parameters are (25.00 ± 4.25), (0.40 ± 0.20), (98.00 ± 6.35) and (96.00 ± 5.35), respectively. On the other hand, for sampling point P2, the concentrations in mg/L of these parameters are respectively (33.00 ± 9.05), (0.70 ± 0.12), (123 ± 7.13) and (93 ± 7.10). These values indicate a strong organic pollution of the BAYA River. The determination of the different concentrations of the organic pollution parameters allowed us to evaluate the degradation and the quality of the water of the BAYA River water, by the poultry activity. However, considering the physicochemical properties of the waste (chicken manure), which is the main source of organic pollution, we have considered an energy recovery through the production of biogas. This requires the design, sizing, and implementation of an anaerobic digester in a poultry farm. Therefore, the project would require the construction of an adapted masonry type anaerobic digester with a capacity of 10 m3.

关键词： Biogas Organic Pollution Surface Water Biodigester Chicken Manure Anaerobic Digestion

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Human Health Risks from Exposure to Heavy Metals of Suspended Particulate Matter around the Tongon Gold Mine, Côte d’Ivoire

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Journal of Agricultural Chemistry and Environment 2023年第2期12卷 171-187页

作者： Kagbagnan Kone Adjoumani Rodrigue kouakou Julien Bahino Horo Kone kouakou eric adou Ehouman Ahissan Donatien Kopoin adouby Département de Géographie UFR Sciences Sociales Université Péléforo Gon Coulibaly Korhogo C&ocircte d’Ivoire Laboratoire des Procédés Industriels de Synthèse de L’environnement et des Energies Nouvelles Institut National Polytechniques Félix Houphou&eumlt Boigny Yamoussoukro C&ocircte d’Ivoire Laboratoire de Thermodynamique et Physico-chimie du Milieu UFR Sciences Fondamentales et Appliquées Université Nangui Abrogoua Abidjan C&ocircte d’Ivoire Laboratoire des Sciences de la Matière de l’Environnement et de l’Energie Solaire LASMES UFR SSMT Université Félix Houphou&eumlt-Boigny Abidjan C&ocircte d’Ivoire Laboratoire de Physique chimie UFR médecine/Département des Sciences et Techniques Université Alassane Ouattara Bouaké C&ocircte d’Ivoire

The Tongon mine, the largest gold mine in C?te d’Ivoire, has been in operation since April 2010. However, to our knowledge to date, no study has been conducted on metallic contamination in suspended particulate matter (PM10 and PM2.5) where there is a lack of information on the carcinogenic and non-carcinogenic risk to human health associated with the exposure of populations in the Tongon area to these pollutants. The general objective of this study is to evaluate the level of contamination of PM10;PM2.5 by heavy metals and their impact on the health of populations exposed to these pollutants in the Tongon gold mine area. The sampling and measurement of suspended particulate matter (PM10 and PM2.5) were done using a MiniVol TAS passive air sampler. Heavy metal concentrations were determined by inductively coupled plasma mass spectroscopy (Nex ION 2000 ICP-MS, USA). The results indicate that the average concentrations of suspended particles (PM2.5 and PM10) obtained are all above the recommended exposure limits. In addition, among the heavy metals contained in the suspended particles, the concentrations of arsenic and nickel are high and all above the standard limit values. The assessment of the health risks related to the inhalation of PM10 particles reveals that their inhalation over a long period could cause a carcinogenic risk.

关键词： Particulate Matters (PM10 and PM2.5) West Africa Tongon Heavy Metals Inhalation Carcinogenic Risk Metallic Contamination

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