کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
681246 | 1460017 | 2012 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Decolorization of an azo dye Orange G in microbial fuel cells using Fe(II)-EDTA catalyzed persulfate Decolorization of an azo dye Orange G in microbial fuel cells using Fe(II)-EDTA catalyzed persulfate](/preview/png/681246.png)
This study constructed a microbial fuel cell (MFC) using Fe(II)-EDTA catalyzed persulfate as the cathode solutions to decolorize Orange G (OG) and harvest electricity simultaneously. Chelated Fe2+ could activate persulfate to generate sulfate free radicals (SO4-) which with high oxidation potential (E0 = 2.6 V) can degrade azo dyes. The influence of some important factors such as pH value of cathode solutions, dosages of K2S2O8, Fe2+ and EDTA were investigated in a two-chamber microbial fuel cell. Under an optimal condition, the maximum power density achieved 91.1 mW m−2, the OG removal rate was 97.4% and the K2S2O8 remaining rate was 47.3% after 12 h. The OG degradation by Fe(II)-EDTA catalyzed persulfate was found to follow the second-order kinetic model.
► Microbial fuel cell using Fe(II)-EDTA catalyzed persulfate as the cathode solution.
► Microbial fuel cell degraded OG and harvest electricity simultaneously.
► The decolorization kinetics of OG followed the second-order kinetics well.
► EDTA could improve the stability of voltage output.
Journal: Bioresource Technology - Volume 126, December 2012, Pages 101–106