Abstract:Under the optimum reaction conditions (pH 6.0, the temperature of 35℃), sequencing batch experiments were carried out to determine the effect of NaCl content on volatile fatty acid (VFA) concentration and composition during anaerobic acidogenesis kitchen wastes. The NaCl content was controlled at 0.0g/L, 3.0g/L, 6.0g/L, 9.0g/L, 12.0g/L. The results showed that, the effect of NaCl on VFA concentration was significant, and VFA concentration decreased with the amount of NaCl increased. When the amount reached 12.0g/L, VFA maximum concentration reached 4.14g/L at 114h, which was only 10.1percent of that of not adding. We also found the fermentation reactions included three stages: butyric acid accumulation, acetic acid accumulation and acetic acid consumption. The product composition in the acid reactor was less depended on NaCl. Each experiment was butyric-acid-type fermentation. When NaCl exceeded more than 6.0g/L, butyric acid accumulation stage was prolonged.
王权, 宫常修, 蒋建国, 张玉静. NaCl对餐厨垃圾厌氧发酵产VFA浓度及组分的影响[J]. 中国环境科学, 2014, 34(12): 3127-3132.
WANG Quan, GONG Chang-Xiu, JIANG Jian-Guo, ZHANG Yu-Jing. Effect of NaCl content on VFA concentration and composition during anaerobic fermentation of kitchen waste. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(12): 3127-3132.