Effect of mixing ratio of food waste and rice husk co-digestion and substrate to inoculum ratio on biogas production

被引：133
|
作者：
Haider, Muhammad Rizwan [1 ]
Zeshan [1 ]
Yousaf, Sohail [1 ]
Malik, Riffat Naseem [1 ]
Visvanathan, Chettiyappan [2 ]
机构：
[1] Quaid I Azam Univ, Dept Environm Sci, Islamabad 45320, Pakistan
[2] Asian Inst Technol, Sch Environm Resources & Dev, Environm Engn & Management, Bangkok 10501, Thailand
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 190卷
关键词：
Co-digestion; Food waste; Rice husk; Substrate to inoculum ratio; Cellulosic biomass; ORGANIC LOADING RATE; ANAEROBIC-DIGESTION; VEGETABLE WASTE; CHICKEN MANURE; METHANE PRODUCTION; ACTIVATED-SLUDGE; MIXTURE RATIO; KITCHEN WASTE; DAIRY MANURE; FRUIT;
D O I：
10.1016/j.biortech.2015.02.105
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Aim of this study was to find out suitable mixing ratio of food waste and rice husk for their co-digestion in order to overcome VFA accumulation in digestion of food waste alone. Four mixing ratios of food waste and rice husk with C/N ratios of 20, 25, 30 and 35 were subjected to a lab scale anaerobic batch experiment under mesophilic conditions. Highest specific biogas yield of 584 L/kg VS was obtained from feedstock with C/N ratio of 20. Biogas yield decreased with decrease in food waste proportion. Further, fresh cow dung was used as inoculum to investigate optimum S/I ratio with the selected feedstock. In experiment 2, feedstock with C/N ratio 20 was subjected to anaerobic digestion at five S/I ratios of 0.25, 0.5, 1.0, 1.5 and 2.0. Specific biogas yield of 557 L/kg VS was obtained at S/I ratio of 0.25. However, VFA accumulation occurred at higher S/I ratios due to higher organic loadings. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：451 / 457
页数：7
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