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Abstract：
In the present study, carbon cloth (CC) was functionalized using dimethyl sulfoxide (DMSO) and employed as an excellent bioanode for improving defluoridation efficiency, wastewater treatment, and power output from a microbial desalination cell (MDC). The Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) analysis of DMSO modified carbon cloth (CCDMSO) confirmed the functionalization of CCDMSO, and the water drop contact angle of 0° ensured its superior hydrophilicity. The presence of -COOH (carboxyl), S[bond, double bond]O (sulfoxide) and O-C[bond, double bond]O (carbonyl) functional groups on CCDMSO aids in enhancing the performance of the MDC. Besides, cyclic voltametric and electrochemical impedance analysis revealed that CCDMSO had an excellent electrochemical performance with low charge transfer resistance. Replacing CC with CCDMSO as anode in MDC, the time required for 3,10 and 20 mg/L of initial fluoride (F-) concentrations in the middle chamber was reduced from 24 ± 0.75 to 17 ± 0.37, 72 ± 1 to 48 ± 0.70, and 120 ± 0.5 to 96 ± 0.53 h, respectively to meet the prescribed standards (1.5 mg/L). Furthermore, using CCDMSO, the anode chamber of MDC exhibited a maximum of 83% substrate degradation, and simultaneously, the power output is increased by 2-2.8 times. CCDMSO improved the power production from 0.009 ± 0.003, 1.394 ± 0.06 and 1.423 ± 0.15 mW/m2 to 0.020 ± 0.07, 2.748 ± 0.22 and 3.245 ± 0.16 mW/m2, respectively, for initial F- concentrations of 3,10, and 20 mg/L. Modifying CC with DMSO thus proved to be an efficient and simple methodology for enhancing the overall performance of MDC.
摘要：
在本研究中,碳布（CC）使用二甲基亚砜（DMSO）官能化，并用作提高除氟效率的优良生物阳极，废水处理,和来自微生物脱盐电池(MDC)的功率输出。DMSO改性碳布(CCDMSO)的拉曼光谱和X射线光电子能谱(XPS)分析证实了CCDMSO的功能化,0°的水滴接触角保证了其优越的亲水性。-COOH（羧基）的存在，S[债券，双键]O（亚砜）和O-C[键，CCDMSO上的双键]O(羰基)官能团有助于增强MDC的性能。此外,循环伏安和电化学阻抗分析表明，CCDMSO具有优异的电化学性能和低的电荷转移电阻。用CCDMSO代替CC作为MDC中的阳极，中间室中3,10和20mg/L的初始氟化物（F-）浓度所需的时间从24±0.75减少到17±0.37，72±1减少到48±0.70和120±0.5减少到96±0.53小时，分别达到规定标准(1.5mg/L)。此外，使用CCDMSO，MDC的阳极室表现出最大83%的衬底降解，同时,输出功率增加2-2.8倍。CCDMSO将功率产生分别从0.009±0.003、1.394±0.06和1.423±0.15mW/m2提高到0.020±0.07、2.748±0.22和3.245±0.16mW/m2，对于初始F-浓度为3,10和20mg/L因此,用DMSO修饰CC被证明是用于增强MDC的整体性能的有效且简单的方法。
