Induced catabolic bio-electrohydrolysis of complex food waste by regulating external resistance for enhancing acidogenic biohydrogen production
Induced catabolic bio-electrohydrolysis of complex food waste by regulating external resistance for enhancing acidogenic biohydrogen production
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DOI：
10.1016/j.biortech.2014.02.073
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发表时间：
2014-08-01
影响因子：
11.4
通讯作者：
Mohan, S. Venkata
中科院分区：
文献类型：
--
作者：
Chandrasekhar, K.;Mohan, S. Venkata
为提高餐厨垃圾产氢效率，设计了一种基于自诱导产电活性的新型生物电水解系统（BEH）。两阶段的混合操作与水解在初始阶段和产酸发酵所得的水解产物（水解后）在第二阶段的H2生产进行了评估。可变外部电阻的应用，与对照相比，10 Ω、100 Ω、1000 Ω和闭路循环（CC）对BEH系统中底物的水解和产酸反应器中的产氢均有影响。在100 Ω下预处理的底物记录了比10 Ω（0.93 l）、CC（0.91 l）、1000 Ω（0.88 l）和对照操作（0.68 l）更高的H-2产量（1.05 l）。相比之下，10 Ω记录了较高的底物降解（53.4%），其次是CC（52.42%）、100 Ω（49.51%）、1000 Ω（47.57%）和对照（43.68%）。伏安曲线与所观察到的生物电水解和H-2生产效率一致。(C)2014爱思唯尔有限公司版权所有。
A novel bio-electrohydrolysis system (BEH) based on self-inducing electrogenic activity was designed as pretreatment device to enhance biohydrogen (H-2) production efficiency from food waste. Two-stage hybrid operation with hydrolysis in the initial stage and acidogenic fermentation of the resulting hydrolysate (after hydrolysis) for H2 production in the second stage was evaluated. Application of variable external resistances viz., 10 Omega, 100 Omega, 1000 Omega and closed circuit (CC) influenced the hydrolysis of substrate in BEH system and hydrogen production in acidogenic reactor compared to control. Pretreated substrate at 100 Omega documented higher H-2 production (1.05 l) than 10 Omega (0.93 l), CC (0.91 l), 1000 Omega (0.88 l) and control operation (0.68 l). Comparatively, 10 Omega documented higher substrate degradation (53.4%) followed by CC (52.42%), 100 Omega (49.51%), 1000 Omega (47.57%) and control (43.68%). Voltammetric profiles were in agreement with the observed bio-electrohydrolysis and H-2 production efficiency. (C) 2014 Elsevier Ltd. All rights reserved.