文章基本信息

标题：Valorization of Household Anaerobic Processed Digestate: A case study of Morocco
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作者：Erraji H. ; Afilal M.E. ; Azim K. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：11
页码：4024-4031
出版社：University of Mohammed Premier Oujda
摘要：Organic wastes, through biotechnology, are valued by the production of renewable energy and fertilizer for soil fertilization. In this study, we will present an assessment of the potential value of organic household waste. Namely, the assessment of physical, chemical and biological parameters of biogas slurry or processed digestate was conducted in order to use it as a soil amendment. The assessment and study of digestate quality are directly related to the concept of compost maturity criteria and methods of evaluation. The results obtained allowed us to conclude that methane fermentation of household waste followed by an aerobic stage of maturation of digestate have several advantages: (1) obtaining processed digestate as a valuable fertilizer by-product whose nutrient content and phytotoxic effect are satisfying; (2) reduction of the maturation period to 35 days compared to 90 days in the case of the conventional composting. On the other hand, this reduction is accompanied with over 50 % of raw material in the studied digestate; (3) production of a renewable energy of retrievable biogas, therefore avoiding the greenhouse gas unlike another methods (conventional composting) and escaping from bad odors, thanks to the use of digesters.
关键词：Household waste; Anaerobic digestion; Processed digestate; Maturation; Soil amendment