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Efficient degradation of rhodamine B using modified graphite felt gas diffusion electrode by electro-Fenton process
Tian, Jiangnan1,2; Olajuyin, Ayobami Matthew1; Mu, Tingzhen1,2; Yang, Maohua1; Xing, Jianmin1
2016-06-01
发表期刊ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
卷号23期号:12页码:11574-11583
摘要The electro-Fenton (EF) process treatment of 0.1-M (rhodamine B) RhB solution was studied with different graphite cathode materials, and graphite felt (GF) was selected as a promising material in further investigation. Then, the degradation performances of gas diffusion electrode (GDE) and graphite felt (GF) were compared, and GDE was confirmed to be more efficient in RhB removal. The operational parameters such as Fe2+ dosage and current density were optimized, and comparison among different modified methods-polytetrafluoroethylene-carbon black (PTFE-CB), polytetrafluoroethylene-carbon nanotube (PTFE-CNT), electrodeposition-CB, and electrodeposition-CNT-showed 98.49 % RhB removal by PTFE-CB-modified cathode in 0.05 M Na2SO4 at a current density of 50 A/m(2) and an air flow rate of 1 L/min after 20 min. Meanwhile, after cathode modified by PTFE-CB, the mineralization efficiency and mineralization current efficiency performed absolutely better than the pristine one. Cyclic voltammograms, SEM images, contact angles, and BET surface area were carried out to demonstrate stronger current responses and higher hydrophilicity of GF after modified. The value of biochemical oxygen demand/chemical oxygen demand (BOD5/COD) increased from 0.049 to 0.331 after 90-min treatment, suggesting the solution was biodegradable, and the modified cathode was confirmed to be stable after ten circle runs. Finally, a proposed degradation pathway of RhB was put forward.
关键词Electro-fenton Graphite Felts Modification Rhb Mineralization Current Efficiency Biodegradability
文章类型Article
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11356-016-6360-7
收录类别SCI
语种英语
关键词[WOS]CARBON NANOTUBES ; AQUEOUS-SOLUTION ; ORANGE G ; OXIDATION ; DYE ; CATHODE ; WATER ; REMOVAL ; H2O2 ; DECOLORIZATION
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
项目资助者Science and Technology Service Network Program of Chinese Academy of Sciences (STS project)(KFJ-EW-STS-049)
WOS记录号WOS:000377476700014
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20961
专题生化工程国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
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Tian, Jiangnan,Olajuyin, Ayobami Matthew,Mu, Tingzhen,et al. Efficient degradation of rhodamine B using modified graphite felt gas diffusion electrode by electro-Fenton process[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(12):11574-11583.
APA Tian, Jiangnan,Olajuyin, Ayobami Matthew,Mu, Tingzhen,Yang, Maohua,&Xing, Jianmin.(2016).Efficient degradation of rhodamine B using modified graphite felt gas diffusion electrode by electro-Fenton process.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(12),11574-11583.
MLA Tian, Jiangnan,et al."Efficient degradation of rhodamine B using modified graphite felt gas diffusion electrode by electro-Fenton process".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.12(2016):11574-11583.
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