Biogas Purification by Alkali-based Column Washing Extracted from Wood Ash and Banana Stalks
Science Journal of Energy Engineering
Volume 8, Issue 1, March 2020, Pages: 6-14
Received: Apr. 16, 2020;
Accepted: May 21, 2020;
Published: Jun. 4, 2020
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Paul Nestor Djomou Djonga, Department of Chemistry, Faculty of Science, University of Maroua, Maroua, Cameroon
Jeanne Atchana, Department of Chemistry, Faculty of Science, University of Maroua, Maroua, Cameroon
Alexis Nankap, Department of Economics, University Institute of Sciences, Technologies and Ethics, Yaounde, Cameroon
Fabrice Kwefeu Mbakop, Department of Economics, University Institute of Sciences, Technologies and Ethics, Yaounde, Cameroon; Department of Renewable Energy, National Advanced Polytechnic School, University of Maroua, Maroua, Cameroon
Raphael Djackba, Department of Chemistry, Faculty of Science, University of Maroua, Maroua, Cameroon
Abel Tame, Department of Inorganic Chemistry, University of Yaounde I, Yaounde, Cameroon
The production of biogas as an energy source from organic waste is a viable option for waste recovery and reduction of greenhouse gases. Before any use of biogas, however, hydrogen sulfide and carbon must be removed to preserve consumer health and the life of the equipment. In this work, we were talking about purifying the biogas by washing on a column with an alkali solution produced from wood ash and ash from the wood stalk. To do this, a functional analysis of the purification system was made. After characterization of the samples, the alkalis were extracted, which were subsequently characterized. The next step was to carry out biogas purification tests from the alkali crystals. The extraction yield of alkali is 7% for the ash of meat grillers and 12% with the ash of banana stalk. The biogas was washed with an alkali concentration of 0.1 g/ml. The optimal residence time offering the best washing is 23 min for CO2 and 32 min for H2S. This study found that the alkali on the banana boom is better. During the washing test, a CO2 absorption capacity of 4.52g/ml of the alkali solution and 20.45 ppm / ml of H2S was recorded. By making an extrapolation It follows that for these quantities of CO2 and H2S absorbed per milliliter, during a domestic installation, for a volume of alkali of 1000 ml, we will have a volume of CO2 of 2,53m3 and a biogas volume of 6.33 m3.
Paul Nestor Djomou Djonga,
Fabrice Kwefeu Mbakop,
Biogas Purification by Alkali-based Column Washing Extracted from Wood Ash and Banana Stalks, Science Journal of Energy Engineering.
Vol. 8, No. 1,
2020, pp. 6-14.
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