期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 3, 页码 2874-2880出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.10.083
关键词
Food industry sludge; Eisenia fetida; Poultry dropping; Cocoons; Heavy metals
资金
- University Grants Commission, New Delhi (India)
This paper reports the recycling of nutrients by vermicomposting of cow dung (CD), poultry droppings (PD) and food industry sludge (FIS) employing earthworms (Eisenia fetida). A total of six vermicomposting units were established and dynamics of chemical and biological parameters has been studied for 13 weeks. The waste mixture containing 50% CD + 25% PD + 25% FIS had better fertilizer value among studied waste combinations. At the end of experiment, vermicomposts showed decrease in pH and organic C, but increase in EC, total Kjeldhal N, total available P and total K contents. The C:N ratio of final vermicomposts also reduced to 10.7-12.7 from 22.8 to 56 in different waste combinations. The earthworms have good biomass gain and cocoon production in all vermicomposting units but CD alone and 50% CD + 25% PD + 25% FIS were better than other studied combinations. (C) 2010 Elsevier Ltd. All rights reserved.
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