CeO2-β-CD改性阳极微生物燃料电池处理抗生素废水的性能研究

Study on a microbial fuel cell with CeO_(2)-β-CD modified anode for antibiotic wastewater treatment

为了提高微生物燃料电池的性能,提出采用纳米级氧化铈(CeO_(2))和β-环糊精(β-CD)进行阳极改性的方法。采用溶液浸泡法制备CeO_(2)-β-CD改性碳毡阳极,以制药废水为阳极液,以驯化污泥为微生物菌种,对比分析3种不同阳极对双室微生物燃料电池性能的影响。结果表明,采用CeO_(2)-β-CD改性阳极的微生物燃料电池的稳态电流密度、最大功率密度、150 h的发电能量及对制药废水的化学需氧量(COD)去除率分别约为0.22 A·m^(-2)、0.073 W·m^(-2)、86.26 J和68%,较采用未改性碳毡阳极的微生物燃料电池分别提高了266.7%、114%、522.4%和94%。CeO_(2)-β-CD改性阳极显著提高了微生物燃料电池的产电能力和废水处理效果。

In order to improve the performance of microbial fuel cells,an anode modification method based on nanoscale cerium oxide(CeO_(2))andβ-cyclodextrin(β-CD)was proposed.CeO_(2)-β-CD modified carbon felt anode was prepared by solution immersion method.Pharmaceutical wastewater was used as anolyte and acclimated activated sludge was used as exoelectrogens,and the effects of three different anodes on the performance of a double chamber microbial fuel cell were compared and analyzed.The results show that the steady-state current density,maximum power density,power generation energy in 150 h and chemical oxygen demand(COD)removal rate of the microbial fuel cell with CeO_(2)-β-CD modified carbon felt anode are 0.22 A·m^(-2),0.073 W·m^(-2),86.26 J and 68%,respectively,which are 266.7%,114%,522.4%and 94%higher than those of the microbial fuel cell with unmodified carbon felt anode.CeO_(2)-β-CD modified anode can significantly improve the power production capacity and wastewater treatment effect of microbial fuel cells.