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Determination of Physico-Chemical Indices of Frying Oils Used by Attieké-Fish Sellers in Daloa (Mid-West of Côte d’Ivoire)

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Food and Nutrition Sciences 2020年第1期11卷 52-62页

作者： nazo edith kpata-konan N’Zué Benjamin Yao Kalpy Julien Coulibaly Koffi Felix konan UFR Agroforesterie University Jean Lorougnon Guédé Daloa Côte d’Ivoire UFR Environnement University Jean Lorougnon Guédé Daloa Côte d’Ivoire Département Environnement et Santé Institut Pasteur de Côte d’Ivoire Abidjan Côte d’Ivoire

The purpose of this article is to compare the quality of three edible oils derived from palm oil in Daloa’s city. The methodological approach of the article includes, on the one hand, a field survey determining the most used oils and the number of frying carried out by the attieké-fish sellers. On the other hand, the physico-chemical parameters (refractive index, iodine index, saponification index, acid index and peroxide index) of these oils were determined. As a result, the most used oils are A, B and C and are heated at least 3 times by the attieké-fish sellers. After repeated heating, the values of the peroxide, saponification, refraction, iodine indices of oils A and B do not match those of the codex with the exception of the acid value. For oil C, only the acid and iodine indices correspond to the codex standards. Overall, the results of the study clearly show that the repeated heating of these oils has an influence on the different physico-chemical properties studied.

关键词： Palm Oil Frying Attieké-Fish

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Anaerobic Digestion of Liquid Waste from an AttiékéFactory: From the Experimental Scale to the Semi-Industrial Scale

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Journal of Environmental Protection 2020年第7期11卷 531-539页

作者： nazo edith kpata-konan Kouamé Martin Kouamé Yao Francis Kouamé Sylvestre Ahou Yaovi Koffi Felix konan Theophile Gnagne Department of Agroforestry University Jean Lorougnon Guédé Daloa C&ocirc te d’Ivoire Department of Environment University Jean Lorougnon Guédé Daloa C&ocirc te d’Ivoire IMT-Atlantique GEPEA UMR CNRS 6144 Nantes France Laboratory of Biology and Molecular Typing in Microbiology LBTMM UAC Abomey-Calavi Benin Department of Science and Environmental Management Université Nangui Abrogoua Abidjan C&ocirc te d’Ivoire

This study focused on the transfer of experimental results of anaerobic digestion of liquid waste from an attiéké (steamed cassava semolina) factory to a 6 m3 pilot digester. The experimental digester and the pilot were powered as follows: Lw + U + C (liquid waste + urine + cow dung). To the results, the experimental digester mesophilic with a progressive elimination of COD. Also, the nitrogen concentrations in the experimental reactor had little removal with alkaline pH. As for the biogas product in this digester, a volume of 3.6 m3 was obtained with a positive flammability test. The transition from the laboratory scale to the semi-industrial scale retains the results of purification and fuel biogas production of the experimental digester.

关键词： Anaerobic Digestion Cassava Liquid Waste Biogas

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Characterization of Digestates from Anaerobic Co-Digestion of Manioc Effluent, Human Urine and Cow Dung

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Journal of Water Resource and Protection 2019年第6期11卷 777-788页

作者： kpata-konan nazo edith Kouamé Yao Francis Kouamé Kouamé Martin konan Koffi Felix Department of Agroforestry/University Jean Lorougnon Gué dé Daloa C&#244 te d’Ivoire Department of Environment/University Jean Lorougnon Gué dé Daloa C&#244 te d’Ivoire

This study focused on the characterization of digestates resulting from anaerobic digestion of manioc effluents from attiéké factories. Two types of digestate were characterized, one consisting of manioc effluent + urine and another composed of manioc effluent + urine + cow dung. As a result, these residues of bio-digestion rich in nutrients (NPK) can be used as agricultural fertilizer. Moreover, the determination of some microorganisms and heavy metals digestates allowed to better appreciate its fertilizing quality. These parameters remained in accordance with the quality standards of a digestate prescribed. These results show that digestates from anaerobic co-digestion of manioc effluents, urine and cow dung can be used without fear as an agricultural biofertilizer.

关键词： Manioc Effluent Human Urine Cow Dung Anaerobic Co-Digestion Digestate

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