Valorization of the Energy Potential of Liquid Wastes Effluents: Case of an Oil Palm Agro-Industry in a Tropical Humid Zone
International Journal of Energy and Environmental Science
Volume 4, Issue 1, January 2019, Pages: 10-17
Received: Jan. 29, 2019; Accepted: Mar. 13, 2019; Published: Apr. 10, 2019
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Kra Essi Kouadio Francis, Laboratory of Motors and Energy Conversion Machines, National Polytechnic Institute Houphouët Boigny (INP-HB), Yamoussoukro, Côte d’Ivoire
N’Guessan Kotchi Remi, Laboratory of New and Renewable Energy Technologies, National Polytechnic Institute Houphouët Boigny (INP-HB), Yamoussoukro, Côte d’Ivoire
Adama Ouattara, Laboratory of Industrial Processes, Syntheses and Renewable Energies, National Polytechnic Institute Houphouët Boigny (INP-HB), Yamoussoukro, Côte d’Ivoire
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The latest analysis realized by the Anti-Pollution Center (CIAPOL) of Côte d’Ivoire in March 2017, reveals that the liquid effluents resulting from the processing of palm oil fruits in the industrial process of palm oil that is studied in this work are, highly charge in organic matter (COD are between 60 000 mg/l to 90 000 mg/l; and there BOD5 are situated between 15 000 mg/l to 30 000 mg/l for a volume of 0.7 m3/ T). This is not in accordance with ISO environmental protection requirement and the decree N° 01164 - MINEF- CIAPOL- SDIID of 04/11/2008 which recommend a decrease of their BOD5 from 30 000 mg/l to 3000 mg/l by treating liquid effluents in an effective anaerobic device with an recuperation and valorization (combustion in an biogas engine witch produce electricity) of methane that these liquid effluents contain. Doing so, this methane will not be rejected in the atmosphere. In the second hand by a final treatment of degraded effluents through the irrigation system of industrial plantations. It should be noted that for the case studied here, the average tonnage of production of Palm Oil fruit bunches is 200000 tons per year. This transformation of palm oil fruits will produce about 140 000 m3 of liquid wastes per year. Base on laboratory experiences, the conclusion is that, 1m3 of waste can produce 32 Nm3 of biogas. Knowing that 1 Nm3 of biogas equal 5000 kcal which equal 5.81 kWh, in consequence a 17 GWh producible of electricity per year is expected. The generated electricity can supplement all external energy power supplies to the plants and provide needed energy to all villages around. The project will allow the industrial process to reduce their energy cost as well as protecting the environment around. The work done here will be beneficial for the industrial process because it will allow on one hand to save energy and on the other hand to produce fertilizer for palm oil fields.
Palm Oil, Waste Effluents, Sustainable Development, Energy, Biogas, Electricity, Environmental Protection
To cite this article
Kra Essi Kouadio Francis, N’Guessan Kotchi Remi, Adama Ouattara, Valorization of the Energy Potential of Liquid Wastes Effluents: Case of an Oil Palm Agro-Industry in a Tropical Humid Zone, International Journal of Energy and Environmental Science. Vol. 4, No. 1, 2019, pp. 10-17. doi: 10.11648/j.ijees.20190401.12
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