How the origin of fresh household waste affects its ability to be biodegraded: An assessment using basic tools and its application to the city of Kara in Togo |
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| Authors: | KN Segbeaya G Feuillade-Cathalifaud G Baba EK Koledzi V Pallier G Tchangbedji G Matejka |
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| Institution: | 1. Laboratory for Management, Treatment and Value of Waste (GTVD), University of Lomé, BP 1515 Lomé, Togo;2. Groupement de Recherche Eau Sol Environnement, Université de Limoges, ENSIL, 16 rue Atlantis, Parc ESTER Technopôle, 87068 Limoges Cedex, France;1. School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing 100872, China;2. College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;1. Department of Forest Products and Technology, College of Agriculture & Life Sciences, Chonnam National University, Gwang-ju 500-757, South Korea;2. Department of Bioenergy Science and Technology, College of Agriculture & Life Sciences, Chonnam National University, Gwang-ju 500-757, South Korea;3. Bioenergy Research Center, Chonnam National University, Gwang-ju 500-757, South Korea |
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| Abstract: | Waste biodegradation has been largely investigated in the literature by using conventional tests like the BMP test and the respirometric test, whereas only few studies deal with the use of leaching tests in combination with biological activity measurements. Consequently, this study used an improved leaching test to evaluate the biodegradability of two deposits of fresh household waste from the city of Kara in Togo. The first deposit came from households in neighborhoods located in the outskirts of the city and the second consisted of fresh waste, mainly composed of business waste and household waste, collected in the urban center and aimed at being deposited in the landfill. A physicochemical characterization of the two deposits completed the leaching test. The biological activity was monitored by measuring O2 consumption and CO2 production. pH, DOC/OM, VFA/DOC ratios and the SUVA index was measured in the leaching juice to assess both the state of degradation of the waste in the deposits and the ability of the organic matter to be mobilized quickly and to be easily assimilated by microorganisms. The biodegradability of waste from the city of Kara correlated with their origin even though the physical characteristics of the two deposits studied differed greatly. |
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