微生物燃料电池作为酒厂废水 UASB 反应器后处理装置的性能

Q4 Earth and Planetary Sciences

Research Journal of Chemistry and Environment Pub Date : 2023-11-05 DOI:10.25303/2712rjce900105

A.B. Saner, A.K. Mungray

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引用次数: 0

摘要

通过双室微生物燃料电池（MFC）对上流式厌氧污泥毯反应器（UASBR）出水进行后处理，评估了高浓度蒸馏废水的处理效果。使用带有质子交换膜的碳电极的台式 UASBR（5 升容量）和 MFC（1 升容量）来阐明能量生成潜力和底物（COD）去除效率。UASB-MFC 单元的进水 COD 浓度逐步增加。随着进水 COD 浓度的增加，MFC 的开路电压、COD 去除率和底物降解率均呈上升趋势。当 COD 浓度为 20600 mg/L 时，COD 去除率（73.79%）和开路电压（1.1 V）均达到最大值。在 COD 浓度最大时，MFC 的功率密度（最大值）、基质降解率和发电量分别为 61.61mW/m2、1.086 kg COD/m3day 和 0.041 W/kg CODR。UASB-MFC 组合装置的 COD 去除率最高可达 90%。实验数据揭示了 MFC 作为可行、经济（节约成本）和可持续选择的潜力。

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Performance of Microbial fuel cell as a post treatment unit of UASB reactor for distillery spent wash

Post treatment of Up-flow anaerobic sludge blanket reactor (UASBR) effluents by a duel chambered Microbial fuel cell (MFC) was evaluated for high strength distillery spent wash. Bench scale UASBR (5 L capacity) and MFC (1 L capacity) with carbon electrodes having proton exchange membrane were used to elucidate the energy generation potential and substrate (COD) removal efficiency. Step by step, the influent COD concentration of UASB-MFC unit was increased. The MFC shows increasing trend of open circuit voltage, COD removal and substrate degradation rate with increase in influent COD concentration. The maximum COD removal (73.79%) and open circuit voltage (1.1 V) were achieved at 20600 mg/L of COD. At maximum COD concentration, MFC showed power density (maximum), substrate degradation rate and power yield as 61.61mW/m2, 1.086 kg COD/m3day and 0.041 W/kg CODR respectively. UASB-MFC combined unit gave maximum COD removal of 90%. The experimental data revealed the potential of MFC as feasible, economic (cost saving) and sustainable option.

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