文章基本信息

标题：Fatty Acids Profile during Anaerobic Digestion of Night Soil-Effect of temperature, Calcium Carbonate and Selectively-enriched Inoculum
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作者：S. I. Alam ; L. Singh ; M. S. Maurya 等
期刊名称：Defence Science Journal
印刷版ISSN：0976-464X
出版年度：2013
卷号：46
期号：1
页码：21-26
DOI：10.14429/dsj.46.4045
语种：English
出版社：Defence Scientific Information & Documentation Centre
摘要：Anaerobic biodegradation of night soil was carried out at 5-30 degree centigrade with 1.8-10.62 per cent volatile solids (VS). Biogas production increased with the temperature and VS up to 6.2 per cent. Further increase in VS caused higher Volatile fatty acids (VFA) accumulation resulting in decreased gas production. Acetate and propionate accounted for 62-83 per cent of total VFA. Butyrate to isobutyrate ratio increased with VS. Calcium Carbonate promoted VS degradation, biogas production and VFA degradation. The increased methanogenic and decreased sulphate-reducing bacteria caused proportional changes in CH4 and H2S gases. Enrichment with H2 oxidising methanogenic consortium is beneficial by enhancing VFA utilisation by two to three fold.
关键词：Sulphate reducing;Volatile fatty acids;Anaerobic biodegradation