Abstract:

In the experiments,the baffled-microbial fuel cell has been constructed by using simulated organic waste-water as anodic substrate,the mixed bacteria in activated sludge as anodic inoculation microbial,and simulated co-pper-containing wastewater as catholyte.The results show that when catholyte CuSO₄ is 5 000 mg/L,the electricity producing capacity of baffled-microbial fuel cell (MFC) is the best,the highest open circuit voltage is 666 mV,the maximum power density 88.0 mW/m²,and the maximum electric current density 491.7 mA/m².The baffled-MFC can effectively treat organic wastewater and copper-containing wastewater.The maximum removing rate of organic wastewater COD can reach 74.9%,and the maximum removing rate of Cu²⁺ can reach 95.8%.The baffle-MFC can recover copper.The XRD detected sediment on negative plate is a mixture of Cu₂O and elemental copper.

Key words: baffled-microbial fuel cell (MFC), copper-containing wastewater, copper recovery, electricity production

摘要：

实验构建折流板式微生物燃料电池,以模拟有机废水为阳极底物,以活性污泥中的混合菌为阳极接种微生物,以模拟含铜废水为阴极液,探讨折流板式MFC对产电性能及废水处理的影响规律。结果表明:当阴极液CuSO₄为5000 mg/L时,折流板式MFC的产电性能最优,开路电压最高为666 mV,功率密度最大为88.0 mW/m²,电流密度最大为491.7 mA/m²。折流板式MFC能有效处理有机废水和含铜废水,对有机废水COD的去除率最高可达74.9%;对Cu²⁺的去除率最高可达到95.8%。折流板式MFC可回收铜,阴极板上的沉积物经XRD检测,为Cu₂O和单质铜的混合物。

关键词: 折流板式微生物燃料电池, 含铜废水, 铜回收, 产电性能

CLC Number: 

• X703.1