Hydrogen and methane production from household solid waste in the two-stage fermentation process
Hydrogen and methane production from household solid waste in the two-stage fermentation process
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DOI：
10.1016/j.watres.2006.03.029
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发表时间：
2006-06-01
期刊：
影响因子：
12.8
通讯作者：
Angelidaki, Irini
中科院分区：
文献类型：
--
作者：
Liu, Dawei;Liu, Dapeng;Angelidaki, Irini
一个两阶段的过程相结合的氢气和甲烷生产从家庭固体废物被证明是成功的。在第一产氢阶段中产生43 mL H-2/g添加的挥发性固体（VS）的产率，并且在第二阶段中的甲烷产量为500 mL CH 4/g添加的VS。这个数字比作为对照运行的一段工艺的甲烷产率高21%。用甲烷气体喷射氢气反应器导致氢气产量加倍。pH是影响产氢阶段发酵途径的关键因素。该体系产氢的最佳pH范围为5 ~ 5.5。在第一阶段应用的短水力停留时间（2天）足以将产酸与产甲烷分开。在第一阶段不需要额外的控制来防止甲烷生成。此外，本研究还为动态发酵过程中产氢量的增加通过液相中乙酸/丁酸比的增加来反映提供了直接证据。(c)2006爱思唯尔有限公司保留所有权利。
A two-stage process combined hydrogen and methane production from household solid waste was demonstrated working successfully. The yield of 43 mL H-2/g volatile solid (VS) added was generated in the first hydrogen production stage and the methane production in the second stage was 500 mL CH4/g VS added. This figure was 21% higher than the methane yield from the one-stage process, which was run as control. Sparging of the hydrogen reactor with methane gas resulted in doubling of the hydrogen production. PH was observed as a key factor affecting fermentation pathway in hydrogen production stage. The optimum PH range for hydrogen production in this system was in the range from 5 to 5.5. The short hydraulic retention time (2 days) applied in the first stage was enough to separate acidogenesis from methanogenesis. No additional control for preventing methanogenesis in the first stage was necessary. Furthermore, this study also provided direct evidence in the dynamic fermentation process that, hydrogen production increase was reflected by acetate to butyrate ratio increase in liquid phase. (c) 2006 Elsevier Ltd. All rights reserved.