Enhancement of hydrogen production during waste activated sludge anaerobic fermentation by carbohydrate substrate addition and pH control
Enhancement of hydrogen production during waste activated sludge anaerobic fermentation by carbohydrate substrate addition and pH control
复制标题
通过碳水化合物底物添加和 pH 控制提高废弃活性污泥厌氧发酵过程中的产氢量
DOI：
10.1016/j.biortech.2012.03.052
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发表时间：
2012-06-01
影响因子：
11.4
通讯作者：
Mu, Hui
中科院分区：
文献类型：
--
作者：
Chen, Yinguang;Xiao, Naidong;Mu, Hui
研究了碳水化合物/蛋白质比（CH/Pr）和pH对剩余活性污泥（WAS）产氢的影响。首先，产氢的最佳pH值受CH/Pr比的影响，在CH/Pr比（以COD计）为0.2（单独污泥）、1、2.4、3.8和6.6时，产氢的最佳pH值分别为10、9、8、8、8和6。在CH/Pr = 5、pH = 8时，产氢量最大（100.6 mL/g-COD），这是由于添加碳水化合物对产氢的协同作用、污泥蛋白质降解和蛋白酶、淀粉酶活性的提高以及适宜的产氢发酵途径。由于在pH 8下观察到氢气消耗，为了进一步增加氢气产量，开发了两步pH控制策略（pH 8 + pH 10），并且氢气产量进一步提高了17.6%。(C)2012爱思唯尔有限公司保留所有权利。
The effects of carbohydrate/protein ratio (CH/Pr) and pH on hydrogen production from waste activated sludge (WAS) were investigated. Firstly, the optimal pH value for hydrogen production was influenced by the CH/Pr ratio, which was pH 10, 9, 8, 8, 8 and 6 at the CH/Pr ratio (COD based) of 0.2 (sole sludge), 1, 2.4, 3.8, Sand 6.6, respectively. The maximal hydrogen production (100.6 mL/g-COD) was achieved at CH/Pr of 5 and pH 8, which was due to the synergistic effect of carbohydrate addition on hydrogen production, the enhancement of sludge protein degradation and protease and amylase activities, and the suitable fermentation pathway for hydrogen production. As hydrogen consumption was observed at pH 8, in order to further increase hydrogen production a two-step pH control strategy (pH 8 + pH 10) was developed and the hydrogen production was further improved by 17.6%. (C) 2012 Elsevier Ltd. All rights reserved.