纳米铁对微生物燃料电池启动的影响
发布时间：2018-07-17 04:28
【摘要】：设置3组不同阳极底物的微生物燃料电池(microbial fuel cell,MFC):无添加污泥(对照组)、含化学合成零价纳米铁的污泥(c-n ZVI组)和含绿色合成零价纳米铁的污泥(g-n ZVI组),拟探究不同来源零价纳米铁(n ZVI)对MFC启动的影响。3组MFC经由5个周期启动,实验结果表明,在c-n ZVI组和g-n ZVI组的启功阶段,高浓度的绿色合成零价纳米铁和化学合成零价纳米铁均对MFC的输出电压产生抑制作用,当MFC成功启动后,零价纳米铁对MFC的输出电压影响不明显。此外,COD去除率、SEM和电化学表征数据表明,绿色合成零价纳米铁相比于化学合成零价纳米铁在电极表面富集程度、对电极表面性质改变以及产电菌活性的抑制作用更弱。
[Abstract]:Three groups of microbial fuel cell (microbial fuel cell) with different anode substrates were set up: no added sludge (control group), sludge containing chemical synthesis of zero-valent nano-iron (c-n ZVI group) and sludge containing green synthesized zero-valent nano-iron (g-n ZVI group). Effects of homologous zero-valent nano-iron (nZVI) on the start of MFC. 3 groups of MFC started through 5 cycles. The experimental results show that, in the Qi Gong stage of c-n ZVI group and g-n ZVI group, high concentration of green synthesized zero-valent nano-iron and chemically synthesized zero-valent nano-iron can inhibit the output voltage of Qi Gong. The effect of zero valence nano iron on the output voltage of MFC is not obvious. In addition, the removal rate of COD and the data of electrochemical characterization showed that the green synthesis of zero-valent nano-iron was weaker than that of the chemical synthesis of zero-valent nano-iron on the electrode surface, and the inhibition of the change of the electrode surface properties and the activity of electrogen-producing bacteria was weaker than that of the chemical synthesis of zero-valent nano-iron on the electrode surface.
【作者单位】： 福建师范大学环境科学与工程学院福建省污染控制与资源循环利用重点实验室;
【基金】：福建省自然科学基金资助项目(2015J01041)
【分类号】：TM911.45;X703
本文编号：2129011
[Abstract]:Three groups of microbial fuel cell (microbial fuel cell) with different anode substrates were set up: no added sludge (control group), sludge containing chemical synthesis of zero-valent nano-iron (c-n ZVI group) and sludge containing green synthesized zero-valent nano-iron (g-n ZVI group). Effects of homologous zero-valent nano-iron (nZVI) on the start of MFC. 3 groups of MFC started through 5 cycles. The experimental results show that, in the Qi Gong stage of c-n ZVI group and g-n ZVI group, high concentration of green synthesized zero-valent nano-iron and chemically synthesized zero-valent nano-iron can inhibit the output voltage of Qi Gong. The effect of zero valence nano iron on the output voltage of MFC is not obvious. In addition, the removal rate of COD and the data of electrochemical characterization showed that the green synthesis of zero-valent nano-iron was weaker than that of the chemical synthesis of zero-valent nano-iron on the electrode surface, and the inhibition of the change of the electrode surface properties and the activity of electrogen-producing bacteria was weaker than that of the chemical synthesis of zero-valent nano-iron on the electrode surface.
【作者单位】： 福建师范大学环境科学与工程学院福建省污染控制与资源循环利用重点实验室;
【基金】：福建省自然科学基金资助项目(2015J01041)
【分类号】：TM911.45;X703
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