納米鐵對微生物燃料電池啟動(dòng)的影響
發(fā)布時(shí)間：2018-07-17 04:28
【摘要】：設(shè)置3組不同陽極底物的微生物燃料電池(microbial fuel cell,MFC):無添加污泥(對照組)、含化學(xué)合成零價(jià)納米鐵的污泥(c-n ZVI組)和含綠色合成零價(jià)納米鐵的污泥(g-n ZVI組),擬探究不同來源零價(jià)納米鐵(n ZVI)對MFC啟動(dòng)的影響。3組MFC經(jīng)由5個(gè)周期啟動(dòng),實(shí)驗(yàn)結(jié)果表明,在c-n ZVI組和g-n ZVI組的啟功階段,高濃度的綠色合成零價(jià)納米鐵和化學(xué)合成零價(jià)納米鐵均對MFC的輸出電壓產(chǎn)生抑制作用,當(dāng)MFC成功啟動(dòng)后,零價(jià)納米鐵對MFC的輸出電壓影響不明顯。此外,COD去除率、SEM和電化學(xué)表征數(shù)據(jù)表明,綠色合成零價(jià)納米鐵相比于化學(xué)合成零價(jià)納米鐵在電極表面富集程度、對電極表面性質(zhì)改變以及產(chǎn)電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.
【作者單位】： 福建師范大學(xué)環(huán)境科學(xué)與工程學(xué)院福建省污染控制與資源循環(huán)利用重點(diǎn)實(shí)驗(yàn)室;
【基金】：福建省自然科學(xué)基金資助項(xiàng)目(2015J01041)
【分類號】：TM911.45;X703
本文編號：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.
【作者單位】： 福建師范大學(xué)環(huán)境科學(xué)與工程學(xué)院福建省污染控制與資源循環(huán)利用重點(diǎn)實(shí)驗(yàn)室;
【基金】：福建省自然科學(xué)基金資助項(xiàng)目(2015J01041)
【分類號】：TM911.45;X703
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