Effect of poised cathodic potential on anodic ammonium nitrogen removal from domestic wastewater by air?cathode microbial fuel cells
Effect of poised cathodic potential on anodic ammonium nitrogen removal from domestic wastewater by air?cathode microbial fuel cells
复制标题
平衡阴极电位对空气阴极微生物燃料电池阳极去除生活废水中铵态氮的影响
DOI：
10.1016/j.biortech.2022.126807
复制
发表时间：
2022
影响因子：
11.4
通讯作者：
Okabe Satoshi
中科院分区：
文献类型：
--
作者：
Joel Koffi N'dah;Okabe Satoshi
在文献中，已经研究了各种生物电化学系统在很大范围内的恒定阳极电位下的阳极氨氧化性能。研究了阴极电位对单室空气阴极微生物燃料电池去除生活污水中氨氮(NH4+-N)、总氮(TN)、NH4+-N、NO2--N和NO3--N总和的影响。将空气阴极电位平衡在+0.7伏与她相比显著增加了电流产生(从11毫安±1.5毫安到22.8毫安±3.5毫安)和通过空气阴极向MFC的氧气渗透量(从75.4毫安±1.2毫克-O2/立方米/天到151毫升±3.7毫克-O2/立方米/天)，NH4+-N和TN的去除效率分别为150±0.13 mg-NH4+-N/m~3/d和63±0.16 mg-TN/m~3/d，这主要归因于电极辅助阳极氧化和好氧NH_4+氧化两个呼吸途径的促进作用。
Performances of anodic ammonia oxidation have been investigated for various bioelectrochemical systems at a wide range of poised anodic potentials in the literature. The effect of poised cathodic potential on ammonium nitrogen (NH4+-N) and total nitrogen (TN, sum of NH4+-N, NO2–-N, and NO3–-N) removal from domestic wastewater by single chamber air–cathode microbial fuel cells (MFCs) was investigated. Poising the air–cathode potential at +0.7 V vs. SHE significantly increased current generation (from 11 ± 1 mA to 22.8 ± 5 mA) and oxygen permeation into the MFC through the air–cathode (from 75.4 ± 1.2 g-O2/m3/d to 151 ± 3.7 g-O2/m3/d), which consequently resulted in a high NH4+-N removal rate of 150 ± 13 g-NH4+-N/m3/d and TN removal rate of 63 ± 16 g-TN/m3/d. These high NH4+-N and TN removal rates could be attributed to the enhancement of dual respiratory pathways: the electrode-assisted anodic and aerobic NH4+oxidation.