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Typology of Crop Residues and Energy Recovery in Heavily Agricultural Areas: Case of the Departments of soubré, Daloa, Issia and Sassandra (Côte d’Ivoire)

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Journal of Agricultural Chemistry and Environment 2022年第3期11卷 196-208页

作者： Amenan Anne Mary Kouassi-Kouadio Pétémanagnan Jean-Marie Ouattara Talnan Jean Honoré Coulibaly Franck Michaël Zahui Lacina Coulibaly Laboratory of Environment and Aquatic Biology Department of Sciences and Environment Management NANGUI ABROGOUA University Abidjan C&ocirc te d’Ivoire Laboratoire Géosciences et Environnement Université Nangui Abrogoua Abidjan C&ocirc te d’Ivoire Department of Agronomic Forestry and Environmental Engineering University of Man Man C&ocirc te d’Ivoire University of Man Man C&ocirc te d’Ivoire

The valorization of crop residues could constitute an energy source (biogas) allowing to reduce the energy needs of populations in agricultural regions, improve their living conditions and slow down deforestation as well as greenhouse gas emissions. This work aims to determine the typology of agricultural waste in the departments of soubré, Sassandra, Daloa and Issia, to determine the number of residues generated in these departments, and to assess the biogas potential of these departments said residues. Field observations were made to identify the different types of waste, then, based on agricultural statistical data from the Ministry of Agriculture and biogas productivity indexes, the quantities of agricultural residues and biogas were estimated. Agricultural residues consist of pods (50%), stalks (19%), cobs (3%), Straws (8%), stalks (2%), shells (9%), fibers (7%), husks (1%), and bunches (1%). In addition, these localities have 465266.3 t of pods, 173583.2 t of stalks, 84280.0 t of shells, 75,857 t of straws, 12,000 t of husks, 10,987 t of bunches and 6793.0 t of fibers. The departments of soubré, Sassandra, Daloa and Issia contain a total potential energy of 235.87 × 106 m3 of biogas. However, this is unevenly distributed among the localities. The volume of biogas recorded is higher in the department of soubré (74.91 × 106 m3) which is followed respectively by the departments of Daloa (62.27 × 106 m3), Issia (52.77 × 106 m3 and Sassandra (45.93 × 106 m3). The departments of soubré, Sassandra, Daloa and Issia have a very large potential for the production of agricultural residues that may be of interest to economic operators for recovery in biogas production units.

关键词： Agriculture Crop Residues Biogas Sassandra Daloa Issia soubré Côte d’Ivoire

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Impacts of Environmental Management on the Quality of Traditional Well Water in the soubre Region(South-West of Cote d’Ivoire)

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Journal of Water Resource and Protection 2017年第13期9卷 1634-1644页

作者： Ohou-Yao Marie Jeanne Adelaide Ouattara Leygnima Yaya Yapo Ossey Bernard Mambo Veronique UFR Environment University Jean Lorougnon GuédéDaloaIvory Coast UFR Science and Environmental Management University Nangui AbrogouaAbidjanIvory Coast Central Environmental Laboratory Ivorian Central for Pollution ControlAbidjanIvory Coast

Water supply is a global problem. A study was conducted on twelve (12) traditional wells water in Daba Dagnogo and Gnipi 2 to determine their physico-chemical quality. Two sampling campaigns (dry season and rainy season), were performed on 16 physical and chemical parameters. The results show that the water is acidic with an average pH of 6.41 ± 0.4;moderately mineralized with an average conductivity of 731.14 ± 611.98 μS·cm-1;moderately saline with an average rate of 1.56 ± 1.22. The average temperature of 28.07 ± 0.86°C is above the norm for all wells. All major ions are consistent with WHO standards except calcium and potassium. 41.67% of wells exceed the standard ammonium ion whose average was 1.43 ± 2.79 mg·L-1 nitrate and 100% with an average of 492.42 ± 434.02 mg·L-1. The ion concentrations are highest in the urban area and are higher in the dry season. The quality of the water sampled wells deteriorated. Several factors affect the degradation, namely the shallow wells, their proximity to toilet, the lack of sanitation and poor management of household waste. It will carry out a campaign to educate people to protect the immediate environment of the water points, avoiding the deposit of garbage and to provide the appropriate wells lids.

关键词： soubré Traditional Wells Physico-Chemical Quality Environmental Management

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