期刊
INDIAN JOURNAL OF MICROBIOLOGY
卷 54, 期 3, 页码 262-267出版社
SPRINGER
DOI: 10.1007/s12088-014-0467-7
关键词
Anaerobic digestion; Biowaste; Biomethanation; Hydrolysis; Mixed bacterial culture
资金
- CSIR-Institute of Genomics and Integrative Biology (IGIB), Delhi
- CSIR-WUM [ESC0108]
- Department of Biotechnology, Government of India [DBT-BT/PR-11517/BCE/08/709/2008]
- CSIR
Vegetable wastes (VW) and food wastes (FW) are generated in large quantities by municipal markets, restaurants and hotels. Waste slurries (250 ml) in 300 ml BOD bottles, containing 3, 5 and 7 % total solids (TS) were hydrolyzed with bacterial mixtures composed of: Bacillus, Acinetobacter, Exiguobacterium, Pseudomonas, Stenotrophomonas and Sphingobacterium species. Each of these bacteria had high activities for the hydrolytic enzymes: amylase, protease and lipase. Hydrolysate of biowaste slurries were subjected to defined mixture of H-2 producers and culture enriched for methanogens. The impact of hydrolysis of VW and FW was observed as 2.6- and 2.8-fold enhancement in H-2 yield, respectively. Direct biomethanation of hydrolysates of VW and FW resulted in 3.0- and 1.15-fold improvement in CH4 yield, respectively. A positive effect of hydrolysis was also observed with biomethanation of effluent of H-2 production stage, to the extent of 1.2- and 3.5-fold with FW and VW, respectively. The effective H-2 yields were 17 and 85 l/kg TS fed, whereas effective CH4 yields were 61.7 and 63.3 l/kg TS fed, from VW and FW, respectively. This ecobiotechnological strategy can help to improve the conversion efficiency of biowastes to biofuels.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据