The performance and kinetic characterization of the three metabolic reactions in the thermophilic hydrogen and acidic fermentation of cassava residue
The performance and kinetic characterization of the three metabolic reactions in the thermophilic hydrogen and acidic fermentation of cassava residue
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DOI：
10.1016/j.ijhydene.2017.01.061
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发表时间：
2017-02-02
影响因子：
7.2
通讯作者：
Li, Yu-You
中科院分区：
文献类型：
--
作者：
Jiang, Hongyu;Qin, Yu;Li, Yu-You
采用混合培养法，在连续搅拌反应器中对木薯渣高温氢发酵的长期性能进行了研究。研究了不同水力停留时间（30 d、6 d和3 d）对水解、产酸和产氢三个代谢步骤的影响。最高的氢气产量，2.38 mmol H-2/g干木薯渣，实现在HRT为30天，而乙酸（2.14 g/L）和丁酸（2.85 g/L）是液体副产物的大部分。结果表明，添加氮源可以保证高温暗发酵产氢的稳定运行。能量回收计算表明，木薯渣氢发酵可以稳定运行，能量回收效率为正，在HRT为30 d时，最高净能量为540.5 MJ/t。(C)2017年氢能出版有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
The long-term performance of the thermophilic hydrogen fermentation of cassava residue was studied in a continuous stirred tank reactor by mixed culture. The effect of different hydraulic retention times (30 days, 6 days and 3 days) on the three metabolic steps of hydrolysis, acidogenesis and hydrogen production was investigated. The highest hydrogen yield, 2.38 mmol H-2/g dry cassava residue, was achieved at an HRT of 30 days, while acetic acid (2.14 g/L) and butyric acid (2.85 g/L) were the majority of liquid by-products. It was confirmed that the addition of a nitrogen supplement ensured the stable operation of the thermophilic dark fermentation of hydrogen. The energy recovery calculations indicated that it is possible to stably operate the hydrogen fermentation of cassava residue with positive energy recovery efficiency and the highest net energy was 540.5 MJ/ton at an HRT of 30 days. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.