Institute of Industrial Ecology and Environment, Yuquan Campus, Zhejiang University, Hangzhou 310027, PR China.
Bioresour Technol. 2010 Jun;101(12):4440-5. doi: 10.1016/j.biortech.2010.01.114. Epub 2010 Feb 25.
A microbial fuel cell and anaerobic-aerobic sequential reactor coupled system was used for azo dye degradation with simultaneous electricity production. Electricity was produced during the co-metabolism process of glucose and azo dye. A microorganism cultured graphite-granular cathode effectively decreased the charge transfer resistance of the cathode and yielded higher power density. Operation parameters including glucose concentration and hydraulic retention time were optimized. The results indicated that recovering electricity during a sequential aerobic-anaerobic azo dye treatment process enhanced chemical oxygen demand removal and did not decrease azo dye removal. Moreover, UV-vis spectra and GC-MS illustrated that the azo bond was cleaved biologically in the anaerobic chamber and abiotically in the aerobic chamber. The toxic intermediates, aromatic amines, were removed by aerobic treatment. Our work demonstrated that the microbial fuel cell and sequential anode-cathode reactor coupled system could be applied to achieve electricity production with simultaneous azo dye degradation.
一种微生物燃料电池与厌氧-好氧序贯式反应器耦合系统用于偶氮染料的降解和同时产电。在葡萄糖和偶氮染料的共代谢过程中产生了电能。用微生物培养石墨颗粒状阴极有效降低了阴极的电荷转移电阻，从而产生更高的功率密度。优化了包括葡萄糖浓度和水力停留时间在内的操作参数。结果表明，在序贯好氧-厌氧偶氮染料处理过程中回收电能可以增强化学需氧量的去除，而不会降低偶氮染料的去除率。此外，UV-vis 光谱和 GC-MS 表明，在厌氧室中偶氮键通过生物作用断裂，在好氧室中通过非生物作用断裂。好氧处理去除了有毒的中间产物，芳香胺。我们的工作表明，微生物燃料电池与序贯式阴阳极反应器耦合系统可用于实现偶氮染料降解的同时产电。
