School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China; School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0512, USA.
School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0512, USA; Center for Regional Environmental Research, National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8506, Japan.
Bioresour Technol. 2013 Oct;146:1-6. doi: 10.1016/j.biortech.2013.07.032. Epub 2013 Jul 15.
A membrane-less microbial fuel cell (ML-MFC) was developed to investigate the simultaneous carbon removal and denitrification. The removal rates of 0.64 kg COD m(-3) of liquid cathode volume (LCV) d(-1) and 0.186 g NO3(-)-N m(-3) of LCV d(-1) were achieved, which resulted in the maximal COD and nitrate removal rates of 100% and 36.7%, respectively. The ML-MFC also achieved a maximal power output of 0.0712 W m(-3) of LCV and 0.844 A m(-3) of LCV in approximately 24h. The maximal coulombic efficiency of anode (CEAn) and cathode (CECa) was 5.1% and 475%, respectively. The anodic gas phase was consisted of 77.2±4.0% CH4, 3.9±0.5% CO2, and 3.9±1.5% N2, which indicated that the low anode coulombic efficiency was due to anodic methane production. The results of this study demonstrated the potential application of ML-MFC in simultaneous carbon and nitrogen removal and energy (electricity) production.
开发了一种无膜微生物燃料电池（ML-MFC）来研究同时去除碳和脱氮。实现了 0.64kgCODm(-3)的液体阴极体积（LCV）d(-1)和 0.186gNO3(-)-Nm(-3)的 LCVd(-1)的去除率，分别导致 COD 和硝酸盐的最大去除率达到 100%和 36.7%。ML-MFC 还在大约 24 小时内实现了 0.0712Wm(-3)的 LCV 和 0.844Am(-3)的 LCV 的最大功率输出。阳极（CEAn）和阴极（CECa）的最大库仑效率分别为 5.1%和 475%。阳极气相由 77.2±4.0%CH4、3.9±0.5%CO2和 3.9±1.5%N2 组成，这表明阳极库仑效率低是由于阳极甲烷的产生。本研究结果表明 ML-MFC 在同时去除碳和氮以及产生能量（电能）方面具有应用潜力。
