重铬酸钾和氯酸钾改性阳极对MFC性能的影响
|
摘要
针对微生物燃料电池产电电流密度低等问题,提出重铬酸钾(K_2Cr_2O_7)和氯酸钾(KClO_3)改性阳极提高微生物燃料电池性能的方法。以湖底污泥为阳极底物,糖蜜废水为阳极液,高锰酸钾(KMnO_4)和氯化钠(NaCl)的混合液为阴极液,构建微生物燃料电池实验系统;以K_2Cr_2O_7或KClO_3为电解液,通过电解处理对阳极进行改性。结果表明,采用质量分数为6%的K_2Cr_2O_7溶液对阳极进行改性时,微生物燃料电池系统的产电性能和净水效果达到比较好的状态,其稳态输出电压约为8.5 mV,稳态电流密度为7.9 mA·m~(-2),对糖蜜废水的化学需氧量(COD)去除率约为35.2%。K_2Cr_2O_7或KClO_3改性碳布作为阳极的微生物燃料电池的发电性能和水处理效果均有明显改善。
A method for the improvement of microbial fuel cell performance was proposed by modifying anodes with potassium dichromate(K_2Cr_2O_7) and potassium chlorate(KClO_3) in order to enhance current density. A microbial fuel cell experimental system was constructed using sludge gathered from lake bottom as the anode substrate, molasses wastewater as anolyte and the mixture of potassium permanganate(KMnO_4) and sodium chloride(NaCl) as catholyte. The anode was modified with electrolytic treatment using K_2Cr_2O_7 or KClO_3 as electrolytes. The results show that the optimum power generation performance and purification effects of the microbial fuel cell system can be obtained when 6% K_2Cr_2O_7 was used. The steady-state output voltage was about 8.5 mV, the steady current density was 7.9 mA·m~(-2) and the removal rate of chemical oxygen demand(COD) for treating the molasses wastewater was about 35.2%. The power generation performance and wastewater treatment effects are significantly improved when using the MFC with K_2Cr_2O_7 and KClO_3 modified carbon cloth anode.
A method for the improvement of microbial fuel cell performance was proposed by modifying anodes with potassium dichromate(K_2Cr_2O_7) and potassium chlorate(KClO_3) in order to enhance current density. A microbial fuel cell experimental system was constructed using sludge gathered from lake bottom as the anode substrate, molasses wastewater as anolyte and the mixture of potassium permanganate(KMnO_4) and sodium chloride(NaCl) as catholyte. The anode was modified with electrolytic treatment using K_2Cr_2O_7 or KClO_3 as electrolytes. The results show that the optimum power generation performance and purification effects of the microbial fuel cell system can be obtained when 6% K_2Cr_2O_7 was used. The steady-state output voltage was about 8.5 mV, the steady current density was 7.9 mA·m~(-2) and the removal rate of chemical oxygen demand(COD) for treating the molasses wastewater was about 35.2%. The power generation performance and wastewater treatment effects are significantly improved when using the MFC with K_2Cr_2O_7 and KClO_3 modified carbon cloth anode.
引文
[1]KUMAR R,SINGH L,ZULARISAM A W,et al.Microbial fuel cell is emerging as a versatile technology:A review on its possible applications,challenges and strategies to improve the performances[J].International Journal of Energy Research,2018,42(2):369-394.
[2]HUGGINS T,FALLGREN P H,JIN S,et al.Energy and performance comparison of microbial fuel cell and conventional aeration treating of wastewater[J].Journal of Microbial&Biochemical Technology,2013,6(3):231-242.
[3]FAN L P,ZHANG L L.Effect of heteropolyacid and heteropolyacid salt on the performance of nanometer proton membrane microbial fuel cell[J].International Journal of Electrochemical Science,2017,12(1):699-709.
[4]樊立萍,郑钰姣,苗晓慧.阴极液及溶氧对微生物燃料电池性能的影响[J].高校化学工程学报,2016,30(2):491-496.FAN L P,ZHENG Y J,MIAO X H.Effects of catholyte and dissolved oxygen on microbial fuel cell performance[J].Journal of Chemical Engineering of Chinese Universities,2016,30(2):491-496.
[5]王鑫,李楠,高宁圣洁,等.微生物燃料电池碳基阳极材料的研究进展[J].中国给水排水,2012,28(22):5-8.WANG X,LI N,GAO N S J,et al.Research progress in carbon anode materials for microbial fuel cells[J].China Water&Wastewater,2012,28(22):5-8.
[6]WATANABE K.Recent developments in microbial fuel cell technologies for sustainable bioenergy[J].Journal of Bioscience and Bioengineering,2008,106(6):528-536.
[7]马彦,樊磊,薄晓,等.微生物燃料电池阳极材料研究进展[J].化工新型材料,2016,44(2):21-23.MA Y,FAN L,BO X,et al.Research progress of anode material for microbial fuel cells[J].New Chemical Materials,2016,44(2):21-23.
[8]陈妹琼,程发良,郭文显,等.微生物燃料电池阳极材料的最新研究进展[J].电源技术,2015,39(4):857-860.CHEN M Q,CHENG F L,GUO W X,et al.Latest research progress of anode materials in microbial fuel cells[J].Chinese Journal of Power Sources,2015,39(4):857-860.
[9]周俊,王秀军.微生物燃料电池阳极改性修饰最新研究进展[J].化学工业与工程技术,2014,35(1):56-60.ZHOU J,WANG X J.Recent research progress on anodic modification of microbial fuel cells[J].Journal of Chemical Industry&Engineering,2014,35(1):56-60.
[10]周宇,刘中良,侯俊先,等.化学氧化改性微生物燃料电池阳极[J]化工学报,2015,66(3):1171-1178.ZHOU Y,LIU Z L,HOU J X,et al.Microbial fuel cell anode modified by chemical oxidation[J].CIESC Journal,2015,66(3):1171-1178.
[11]李肖肖,毛磊,童仕唐,等.表面氧化改性制备活性炭电极材料及其电化学性能研究[J].化工新型材料,2015,43(3):173-175.LI X X,MAO L,TONG S T,et al.Preparation and electrochemical performances of HNO3-modified activated carbon electrode[J].New Chemical Materials,2015,43(3):173-175.
[12]FAN L P,XU D D,LI C,et al.Molasses wastewater treatment by microbial fuel cell with MnO2-modified cathode[J].Polish Journal of Environmental Studies,2016,25(6):2359-2356.
[13]杨倩,徐源,蒋阳月,等.微生物燃料电池电极材料的最新研究进展[J].化工进展,2013,32(10):2423-2428.YANG Q,XU Y,JIANG Y Y,et al.Research progress of electrode materials for microbial fuel cells[J].Chemical Industry and Engineering Progress,2013,32(10):2423-2428.
[14]常定明,张海芹,卢智昊,等.金属离子在微生物燃料电池中的行为[J].化学进展,2014,26(7):1244-1254.CHANG D M,ZHANG H Q,LU Z H,et al.Behavior of metal ions in microbial fuel cells[J].Progress in Chemistry,2014,26(7):1244-1254.
[15]张伟贤,赵庆良,张云澍,等.镁离子对微生物燃料电池阳极微生物产电性能的促进[J].Journal of Harbin Institute of Technology哈尔滨工业大学学报,2016,43(8):42-47.ZHANG W X,ZHAO Q L,ZHANG Y S,et al.Enhancement of electricity generation performance of microbial fuel cell anode microorganism by magnesium ion[J].Journal of Harbin Institute of Technology,2016,43(8):42-47.
[16]APOLLO S,ONYONGO M S,OCHIENG A.UV/H2O2/TiO2/Zeolite hybrid system for treatment of molasses wastewater[J].Iran Journal of Chemistry and Chemical Engineering,2014,33(2):107-117.
[17]PENA M,COCA G,GONZALEZ R,et al,Chemical oxidation of wastewater from molasses fermentation with ozone[J],Chemosphere,2003,51(9):893-900.
[18]高靖伟,赫婷婷,程翔,等.EGSB-MBR组合工艺处理糖蜜废水效能研究[J].中国环境科学,2015,35(5):1416-1422.GAO J W,HE T T,CHENG X,et al.Performance of the combined EGSB-MBR reactor treating fermentation wastewater[J].China Environmental Science,2015,35(5):1416-1422.
[2]HUGGINS T,FALLGREN P H,JIN S,et al.Energy and performance comparison of microbial fuel cell and conventional aeration treating of wastewater[J].Journal of Microbial&Biochemical Technology,2013,6(3):231-242.
[3]FAN L P,ZHANG L L.Effect of heteropolyacid and heteropolyacid salt on the performance of nanometer proton membrane microbial fuel cell[J].International Journal of Electrochemical Science,2017,12(1):699-709.
[4]樊立萍,郑钰姣,苗晓慧.阴极液及溶氧对微生物燃料电池性能的影响[J].高校化学工程学报,2016,30(2):491-496.FAN L P,ZHENG Y J,MIAO X H.Effects of catholyte and dissolved oxygen on microbial fuel cell performance[J].Journal of Chemical Engineering of Chinese Universities,2016,30(2):491-496.
[5]王鑫,李楠,高宁圣洁,等.微生物燃料电池碳基阳极材料的研究进展[J].中国给水排水,2012,28(22):5-8.WANG X,LI N,GAO N S J,et al.Research progress in carbon anode materials for microbial fuel cells[J].China Water&Wastewater,2012,28(22):5-8.
[6]WATANABE K.Recent developments in microbial fuel cell technologies for sustainable bioenergy[J].Journal of Bioscience and Bioengineering,2008,106(6):528-536.
[7]马彦,樊磊,薄晓,等.微生物燃料电池阳极材料研究进展[J].化工新型材料,2016,44(2):21-23.MA Y,FAN L,BO X,et al.Research progress of anode material for microbial fuel cells[J].New Chemical Materials,2016,44(2):21-23.
[8]陈妹琼,程发良,郭文显,等.微生物燃料电池阳极材料的最新研究进展[J].电源技术,2015,39(4):857-860.CHEN M Q,CHENG F L,GUO W X,et al.Latest research progress of anode materials in microbial fuel cells[J].Chinese Journal of Power Sources,2015,39(4):857-860.
[9]周俊,王秀军.微生物燃料电池阳极改性修饰最新研究进展[J].化学工业与工程技术,2014,35(1):56-60.ZHOU J,WANG X J.Recent research progress on anodic modification of microbial fuel cells[J].Journal of Chemical Industry&Engineering,2014,35(1):56-60.
[10]周宇,刘中良,侯俊先,等.化学氧化改性微生物燃料电池阳极[J]化工学报,2015,66(3):1171-1178.ZHOU Y,LIU Z L,HOU J X,et al.Microbial fuel cell anode modified by chemical oxidation[J].CIESC Journal,2015,66(3):1171-1178.
[11]李肖肖,毛磊,童仕唐,等.表面氧化改性制备活性炭电极材料及其电化学性能研究[J].化工新型材料,2015,43(3):173-175.LI X X,MAO L,TONG S T,et al.Preparation and electrochemical performances of HNO3-modified activated carbon electrode[J].New Chemical Materials,2015,43(3):173-175.
[12]FAN L P,XU D D,LI C,et al.Molasses wastewater treatment by microbial fuel cell with MnO2-modified cathode[J].Polish Journal of Environmental Studies,2016,25(6):2359-2356.
[13]杨倩,徐源,蒋阳月,等.微生物燃料电池电极材料的最新研究进展[J].化工进展,2013,32(10):2423-2428.YANG Q,XU Y,JIANG Y Y,et al.Research progress of electrode materials for microbial fuel cells[J].Chemical Industry and Engineering Progress,2013,32(10):2423-2428.
[14]常定明,张海芹,卢智昊,等.金属离子在微生物燃料电池中的行为[J].化学进展,2014,26(7):1244-1254.CHANG D M,ZHANG H Q,LU Z H,et al.Behavior of metal ions in microbial fuel cells[J].Progress in Chemistry,2014,26(7):1244-1254.
[15]张伟贤,赵庆良,张云澍,等.镁离子对微生物燃料电池阳极微生物产电性能的促进[J].Journal of Harbin Institute of Technology哈尔滨工业大学学报,2016,43(8):42-47.ZHANG W X,ZHAO Q L,ZHANG Y S,et al.Enhancement of electricity generation performance of microbial fuel cell anode microorganism by magnesium ion[J].Journal of Harbin Institute of Technology,2016,43(8):42-47.
[16]APOLLO S,ONYONGO M S,OCHIENG A.UV/H2O2/TiO2/Zeolite hybrid system for treatment of molasses wastewater[J].Iran Journal of Chemistry and Chemical Engineering,2014,33(2):107-117.
[17]PENA M,COCA G,GONZALEZ R,et al,Chemical oxidation of wastewater from molasses fermentation with ozone[J],Chemosphere,2003,51(9):893-900.
[18]高靖伟,赫婷婷,程翔,等.EGSB-MBR组合工艺处理糖蜜废水效能研究[J].中国环境科学,2015,35(5):1416-1422.GAO J W,HE T T,CHENG X,et al.Performance of the combined EGSB-MBR reactor treating fermentation wastewater[J].China Environmental Science,2015,35(5):1416-1422.