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首页> 外文期刊>Bioprocess and Biosystems Engineering >Process contribution evaluation for COD removal and energy production from molasses wastewater in a BioH(2)-BioCH(4)-MFC-integrated system
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Process contribution evaluation for COD removal and energy production from molasses wastewater in a BioH(2)-BioCH(4)-MFC-integrated system

机译：在BioH（2）-BioCH（4）-MFC集成系统中从糖蜜废水中去除COD和生产能量的过程贡献评估

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In this study, a three-stage-integrated process using the hydrogenic process (BioH(2)), methanogenic process (BioCH(4)), and a microbial fuel cell (MFC) was operated using molasses wastewater. The contribution of individual processes to chemical oxygen demand (COD) removal and energy production was evaluated. The three-stage integration system was operated at molasses of 20 g-COD L-1, and each process achieved hydrogen production rate of 1.1 +/- 0.24 L-H-2 L-1 day(-1), methane production rate of 311 +/- 18.94 mL-CH4 L-1 day(-1), and production rate per electrode surface area of 10.8 +/- 1.4 g m(-2) day(-1). The three-stage integration system generated energy production of 32.32 kJ g-COD-1 and achieved COD removal of 98 %. The contribution of BioH(2), BioCH(4), and the MFC reactor was 20.8, 72.2, and, 7.0 % of the total COD removal, and 18.7, 81.2, and 0.16 % of the total energy production, respectively. The continuous stirred-tank reactor BioH(2) at HRT of 1 day, up-flow anaerobic sludge blanket BioCH(4) at HRT of 2 days, and MFC reactor at HRT of 3 days were decided in 1:2:3 ratios of working volume under hydraulic retention time consideration. This integration system can be applied to various configurations depending on target wastewater inputs, and it is expected to enhance energy recovery and reduce environmental impact of the final effluent.
机译：在这项研究中，使用糖蜜废水操作了三个阶段的集成过程，其中包括氢过程（BioH（2）），产甲烷过程（BioCH（4））和微生物燃料电池（MFC）。评估了各个过程对化学需氧量（COD）去除和能源生产的贡献。该三阶段集成系统以20 g-COD L-1的糖蜜运行，每个过程的制氢速率为1.1 +/- 0.24 LH-2 L-1天（-1），甲烷产生速率为311 + /-18.94 mL-CH4 L-1天（-1），每电极表面积的生产率为10.8 +/- 1.4 gm（-2）天（-1）。该三级集成系统产生的能量为32.32 kJ g-COD-1，COD去除率为98％。 BioH（2），BioCH（4）和MFC反应器的贡献分别为总COD去除量的20.8％，72.2％和7.0％，占总能量产量的18.7％，81.2％和0.16％。 HRT为1天的连续搅拌釜反应器BioH（2），HRT为2天的上流厌氧污泥床BioCH（4）和HRT为3天的MFC反应器的比例为1：2：3在考虑液压保持时间的情况下的最大工作容积。该集成系统可以根据目标废水输入量应用于各种配置，并且有望提高能量回收率并减少最终废水的环境影响。

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