微生物燃料电池中硝基酚生物阴极还原过程影响因素研究
实验结果表明，与经典空气阴极相比，生物阴极MFC可在较低的输出电压水平下实现对硝基酚的阴极还原，生成的主要还原产物为对氨基酚。在1000Ω、500Ω、240Ω的不同外加电阻条件下，随着外阻的减小，硝基酚降解率分别可达到90%、100%、100%，但在500Ω的条件下硝基酚完全分解所用的时间约为30H，低于在240Ω所需时间50H；最高输出电压为200mV、160mV、110mV，生物阴极反应器由于阳极、阴极生物共同存在，产电变化规律不及空气阴极明显；综合降解效率及产电情况，本实验中最佳的外电路电阻为500Ω。在pH4和pH6条件下进行的实验中，阴极硝基酚降解率分别为80%、100%；电池最高输出电压分别可达105mV、115mV；本研究中由于生物强化降解过程的存在， pH6条件更有利于硝基酚的阴极还原降解。 20304
关键词 微生物燃料电池 硝基酚 pH值 外加电阻 还原
毕业论文设计说明书（论文）外文摘要
Title Influencing factors during Nitro-phenol reduction in bio-cathode microbial fuel cell
Abstract
The influencing factors during Nitro-phenol degradation in bio-cathode microbial fuel cell were discussed in this study.At the same time, compared to the classic air cathode type reactor, analyze the different production performance of cathode type bioreactors.
The experimental results show that, compared with the classic air cathode, biological cathode MFC can be achieved in relatively lower level of the output voltage of the cathodic reduction of nitro phenol, generated mainly reduction product of amino phenol. With the decrease of the external resistance, nitrophenol degradation rate decreases. The maximum output voltage of 200 mV, 160 mV, 110 mV, biological cathode reactor due to the anode, cathode creatures exist together, electricity change rule is less than the air cathode. The comprehensive degradation efficiency and electricity production, in this experiment the best external resistance of 500 Ω.Experiments under the condition of pH4 and pH6, cathode nitro phenol degradation rate are 80% and 80% respectively.The highest battery output voltage is 105 mv, respectively 115 mv. Cause of the existence of microorganism degradation process pH6 conditions more conducive to the cathodic reduction of nitro phenol degradation.
Keywords : Microbial fuel cells Nitro phenol pH external resistance Reduction
目 次
1 引言 1
1．1 微生物燃料电池概述 1
1.2 硝基酚概述 3
1.3 微生物燃料电池阴极类型 5
1．4 课题主要研究内容 7
2 实验装置与实验方法 7
2．1 实验装置简介 7
2．2 实验所需药品以及溶液的配制 8
2．3 实验过程 9
2．4 数据分析方法 11
3 结果与讨论 12
3．1 空气阴极、生物阴极MFC的电性能研究 12
3．2 不同外电阻对系统性能的影响 14
3．3 不同阴极液pH值对系统性能的影响 18