废活性污泥与散沫花生物质共发酵产生的挥发性脂肪酸。
Volatile fatty acids produced by co-fermentation of waste activated sludge and henna plant biomass.
机构信息
Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China.
Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China.
出版信息
Bioresour Technol. 2016 Jul;211:80-6. doi: 10.1016/j.biortech.2016.03.071. Epub 2016 Mar 15.
Anaerobic co-fermentation of waste activated sludge (WAS) and henna plant biomass (HPB) for the enhanced production of volatile fatty acids (VFAs) was investigated. The results indicated that VFAs was the main constituents of the released organics; the accumulation of VFAs was much higher than that of soluble carbohydrates and proteins. HPB was an advantageous substrate compared to WAS for VFAs production; and the maximum VFAs concentration in an HPB mono-fermentation system was about 2.6-fold that in a WAS mono-fermentation system. In co-fermentation systems, VFAs accumulation was positively related to the proportion of HPB in the mixed substrate, and the accumulated VFAs concentrations doubled when HPB was increased from 25% to 75%. HPB not only adjust the C/N ratio; the associated and/or released lawsone might also have a positive electron-shuttling effect on VFAs production.
研究了废活性污泥（WAS）和散沫花植物生物质（HPB）的厌氧共发酵，以提高挥发性脂肪酸（VFAs）的产量。结果表明，VFAs 是释放有机物的主要成分；VFAs 的积累量远高于可溶性碳水化合物和蛋白质。与 WAS 相比，HPB 是生产 VFAs 的有利基质；在 HPB 单发酵系统中，VFAs 的最大浓度约为 WAS 单发酵系统的 2.6 倍。在共发酵系统中，VFAs 的积累与混合基质中 HPB 的比例呈正相关，当 HPB 从 25%增加到 75%时，积累的 VFAs 浓度增加了一倍。HPB 不仅调节 C/N 比；相关的和/或释放的 lawsone 也可能对 VFAs 的产生有积极的电子穿梭效应。
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