期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 12, 页码 4484-4490出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.01.116
关键词
Composting; Bulking agent; Clay; Residue; Food waste
资金
- Thailand Research Fund [MRG5080389]
- Office of the Higher Education Commission
New granular material from clay residue was investigated as a bulking agent for food waste composting. Five mixing ratios of granule were conducted in a laboratory scale reactor at the desired low rate of air (0.051 min(-1)). The evolution of temperature and the accumulative CO(2) emissions were monitored. Physical and chemical changes, N loss, and organic matter degradation of compost were also examined. Adoption of granules of 15% V/V (FAS 31.6%) enhanced the thermophilic composting and CO(2) emissions; thus satisfying the Process to Further Reduce Pathogens (PFRP, USEPA) as well as obtaining the highest rate constant of organic matter degradation (k = 0.005 day(-1)). As the amount of granules was doubled (35% V/V), the temperature was not only cooled, but also promoted the substantial N loss (54%). It was suggested that bulking agent from clay residue can be used beneficially as reusable media for microbial inoculation as analyzed by SEM. (C). 2010 Elsevier Ltd. All rights reserved.
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