| Title: | The effect of a buffer function on the semi-continuous anaerobic digestion |
| Address: | "State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China" |
| DOI: | 10.1016/j.biortech.2013.04.006 |
| ISSN/ISBN: | 1873-2976 (Electronic) 0960-8524 (Linking) |
| Abstract: | "The characteristics of the long term (90 d) anaerobic semi-continuous digestion of food wastes/animal slurry wastewater with different C/N ratio were investigated. The research demonstrates that, in the semi-continuous digestion process, different C/N ratios of substrate led to a significant effect to the characteristic of anaerobic digestion (AD). It is undoubtedly that the semi-continuous AD is efficient within a wide range of C/N ratios, and the lower C/N substrate promoted the activity of the methanogen in a long time, which maintained a stable high CH4 concentration and total organic carbon (TOC) utilization. During the whole AD process, an active buffer system was formed from NH4(+) and VFAs (by-products of TOC): this buffer system provided high concentrations of VFAs, thus increasing both the CH4 yield and TOC utilization; and also maintained a high tolerance to NH4(+) and VFAs in the system, which defusing the impact of NH4(+)" |
| Keywords: | "Ammonium Compounds/analysis Anaerobiosis Animals Biofuels Buffers Carbon/analysis Fatty Acids, Volatile/analysis Methane Nitrogen/analysis Refuse Disposal/*methods Solid Waste/analysis;" |
| Notes: | "MedlineWang, Qingfeng Peng, Liyu Su, Haijia eng Research Support, Non-U.S. Gov't England 2013/05/07 Bioresour Technol. 2013 Jul; 139:43-9. doi: 10.1016/j.biortech.2013.04.006. Epub 2013 Apr 9" |
