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Microbial fuel cell‐assisted Congo red dye decolorization using biowaste‐derived anode material
Asia-Pacific Journal of Chemical Engineering ( IF 1.8 ) Pub Date : 2020-08-07 , DOI: 10.1002/apj.2558 Shalini Prajapati 1 , Pydi Setty Yelamarthi 1
Asia-Pacific Journal of Chemical Engineering ( IF 1.8 ) Pub Date : 2020-08-07 , DOI: 10.1002/apj.2558 Shalini Prajapati 1 , Pydi Setty Yelamarthi 1
Affiliation
Microbial fuel cell (MFC) is a promising technology for wastewater treatment coupled with electricity generation. Biowaste‐derived electrodes are used to improve the surface area, roughness, and hydrophilicity, which play pivotal role in the enhanced biofilm formation. In the present study, Ficus religiosa leaves (FRL) biowaste was used to develop the bioelectrode. In this study, Congo red (CR) dye decolorization was performed using MFC, wherein the effect of dye decolorization with respect to dye concentration, glucose concentration, and hydraulic retention time (HRT) was studied. The surface roughness and distribution of carbon powder on carbon cloth were confirmed using scanning electron microscope (SEM) analysis. Also, Bacillus subtilis adhesion and chain‐like structure formation on the electrode confirmed the biofilm formation on the electrode. The polarization curve was performed to assess the MFC performance. The maximum power density of 70.50 mW/m2 and current density of 251.79 mA/m2 at 2,224 Ω was achieved. The maximum decolorization of 80.95 ± 2.08% and COD reduction of 73.96 ± 1.76% were obtained, respectively, after complete treatment of MFC for 54 h. UV‐visible spectrometry analysis of dye contained samples during MFC treatment at various time intervals was confirmed the cleavage of azo bond (NN), and the corresponding peak intensity variation was noticed at 490 nm.
中文翻译:
微生物燃料电池阳极材料对微生物燃料电池辅助的刚果红染料的脱色
微生物燃料电池(MFC)是用于废水处理和发电的有前途的技术。源自生物废物的电极用于改善表面积,粗糙度和亲水性,它们在增强生物膜形成中起关键作用。在本研究中,使用榕叶(FRL)生物废料开发生物电极。在这项研究中,刚果红(CR)染料是使用MFC进行脱色的,其中研究了染料脱色对染料浓度,葡萄糖浓度和水力停留时间(HRT)的影响。使用扫描电子显微镜(SEM)分析确认碳粉在碳布上的表面粗糙度和分布。另外,枯草芽孢杆菌电极上的粘附和链状结构形成证实了电极上的生物膜形成。进行极化曲线以评估MFC性能。在2,224Ω时实现了70.50 mW / m 2的最大功率密度和251.79 mA / m 2的电流密度。完全处理MFC 54小时后,分别获得80.95±2.08%的最大脱色率和73.96±1.76%的COD降低率。在不同时间间隔MFC治疗期间染料的紫外-可见光谱测定分析样品所含确认偶氮键(裂解 NN ),以及相应的峰强度变化在490nm处注意到。
更新日期:2020-10-06
中文翻译:
微生物燃料电池阳极材料对微生物燃料电池辅助的刚果红染料的脱色
微生物燃料电池(MFC)是用于废水处理和发电的有前途的技术。源自生物废物的电极用于改善表面积,粗糙度和亲水性,它们在增强生物膜形成中起关键作用。在本研究中,使用榕叶(FRL)生物废料开发生物电极。在这项研究中,刚果红(CR)染料是使用MFC进行脱色的,其中研究了染料脱色对染料浓度,葡萄糖浓度和水力停留时间(HRT)的影响。使用扫描电子显微镜(SEM)分析确认碳粉在碳布上的表面粗糙度和分布。另外,枯草芽孢杆菌电极上的粘附和链状结构形成证实了电极上的生物膜形成。进行极化曲线以评估MFC性能。在2,224Ω时实现了70.50 mW / m 2的最大功率密度和251.79 mA / m 2的电流密度。完全处理MFC 54小时后,分别获得80.95±2.08%的最大脱色率和73.96±1.76%的COD降低率。在不同时间间隔MFC治疗期间染料的紫外-可见光谱测定分析样品所含确认偶氮键(裂解 NN ),以及相应的峰强度变化在490nm处注意到。