Simultaneous biohydrogen production and wastewater treatment in biofilm configured anaerobic periodic discontinuous batch reactor using distillery wastewater
Simultaneous biohydrogen production and wastewater treatment in biofilm configured anaerobic periodic discontinuous batch reactor using distillery wastewater
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DOI：
10.1016/j.ijhydene.2007.10.013
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发表时间：
2008
影响因子：
7.2
通讯作者：
S. Mohan;G. Mohanakrishna;S. Ramanaiah;P. N. Sarma
中科院分区：
文献类型：
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作者：
S. Mohan;G. Mohanakrishna;S. Ramanaiah;P. N. Sarma
在厌氧序批式生物膜反应器 (AnSBBR) 中，使用酿酒废水作为底物，在两个操作 pH 值下研究了同时废水处理的生物氢 (H2) 生产。选择性富集的厌氧混合菌群经过重复热休克（100°C；2h）和酸（pH -3.0；24h）方法依次预处理，用作母体接种物来启动生物反应器。反应器在环境温度（28±2∘C）下以周期性不连续间歇模式运行，停留时间为24小时。实验数据表明以酿酒废水为底物降解产氢的可行性。发现反应器的性能取决于操作pH值。采用的嗜酸微环境（pH 6.0）比中性微环境（产氢速率-7mmolH2/天；产氢比-1.63molH2/kgCODR-天）更有利于产氢（产氢速率-26mmolH2/天；产氢比-6.98molH2/kgCODR-天）。然而，发现COD去除效率在中性微环境（pH 7—69.68％；pH 6.0—56.25％）中有效。所描述的过程记录了以氢气形式产生可再生能源和利用其作为底物同时进行废水处理的双重好处。
Biohydrogen (H2) production with simultaneous wastewater treatment was studied in anaerobic sequencing batch biofilm reactor (AnSBBR) using distillery wastewater as substrate at two operating pH values. Selectively enriched anaerobic mixed consortia sequentially pretreated with repeated heat-shock (100°C; 2h) and acid (pH -3.0; 24h) methods, was used as parent inoculum to startup the bioreactor. The reactor was operated at ambient temperature (28±2∘C) with detention time of 24h in periodic discontinuous batch mode. Experimental data showed the feasibility of hydrogen production along with substrate degradation with distillery wastewater as substrate. The performance of the reactor was found to be dependent on the operating pH. Adopted acidophilic microenvironment (pH 6.0) favored H2production (H2production rate—26mmolH2/day; specific H2production—6.98molH2/kgCODR-day) over neutral microenvironment (H2production rate—7mmolH2/day; specific H2production—1.63molH2/kgCODR-day). However, COD removal efficiency was found to be effective in operated neutral microenvironment (pH 7—69.68%; pH 6.0—56.25%). The described process documented the dual benefit of renewable energy generation in the form of H2with simultaneous wastewater treatment utilizing it as substrate.