標題: High-rate composting of barley dregs with sewage sludge in a pilot scale bioreactor
作者: Lu, Li-An
Kumar, Mathava
Tsai, Jen-Chleh
Lin, Jih-Gaw
環境工程研究所
Institute of Environmental Engineering
關鍵字: barley dregs;central composite design;high-rate composting;bioreactor;sewage sludge
公開日期: 1-May-2008
摘要: The feasibility of high-rate composting of barley dregs and sewage sludge was examined using a pilot scale bioreactor. A central composite design (CCD) was used to optimize the mix ratio of barley dregs/sewage sludge and moisture content. The performance of the bioreactor was monitored as a function of carbon decomposition rate (CDR) and total volatile solids (TVS) loss rate. The optimum range of mix ratio and moisture content was found to be 35-40% and 55-60%, respectively. High CO2 evolution rate (CER) and TVS loss rate were observed after 3 days of the composting and the compost was matured/stable after 7 days. Cardinal temperature model with inflection (CTMI) was used to analyze the compost stability with respect to CER as a parameter of composting efficiency. After examining the phytotoxicity, the compost can be promoted for land application. (C) 2007 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.biortech.2007.05.030
http://hdl.handle.net/11536/9354
ISSN: 0960-8524
DOI: 10.1016/j.biortech.2007.05.030
期刊: BIORESOURCE TECHNOLOGY
Volume: 99
Issue: 7
起始頁: 2210
結束頁: 2217
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