Efficient reuse of anode scrap from lithium-ion batteries as cathode for pollutant degradation in electro-Fenton process: Role of different recovery processes
Cao, Zhiqin1; Zheng, Xiaohong2; Cao, Hongbin2; Zhao, He2; Sun, Zhi2; Guo, Zhuang2; Wang, Kai2,3; Zhou, Bin4
2018-04-01
发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
卷号337页码:256-264
摘要Effective recycling of spent graphite from lithium-ion batteries (LIBs) has a strong application potential. In this research, anode scrap of spent LIBs is efficiently recovered and reused as high-performance cathode in electro-Fenton system. Role of different recovery processes in the reuse of anode scrap powder in electro-Fenton system is focused, including Anode raw powder (RP), acid leaching (AL), acid and alkali leaching (AAL) residual powder. The results indicate functional groups of anode powder are changed by different leaching processes, which can significantly affect the subsequent reuse in electro-Fenton system. According to evaluation by electrochemical characterization, the AAL has a higher hydrogen peroxide (H2O2) selectivity and yield than RP and AL due to highly active two-electron reduction of oxygen (O-2). Interestingly, when anode powder is reused in electro-Fenton system, the AL electrode achieves 100% bisphenol A (BPA) removal in 70 min and 87.4% COD removal in 240 min, showing the best degradation efficiency. The reason can be attributed to higher carboxylic group content (35.83%) of AL powder than that of AAL (7%). Thus, part of iron ion in solution can be adsorbed on the surface of AL cathode, forming a partial heterogeneous iron oxidation-reduction. Furthermore, the reusability of AL electrode is evaluated. Compared with other carbon cathode, the AL cathode with a low current density still maintains 100% BPA removal after 10 reuse cycles. Since it is inherent with high reusability and environmental friendliness comparing with traditional cathode materials, this research demonstrates a potentially new approach to cooperatively treat pollutants from solid waste and waste water.
关键词Spent Lithium-ion Batteries Recovery Electro-fenton Anode Scrap
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cej.2017.12.104
收录类别SCI
语种英语
关键词[WOS]WASTE-WATER ; AQUEOUS-SOLUTIONS ; OXYGEN REDUCTION ; GRAPHITE CATHODE ; CARBON ; GENERATION ; REMOVAL ; ACID ; H2O2 ; COMPOSITE
WOS研究方向Engineering
WOS类目Engineering, Environmental ; Engineering, Chemical
项目资助者National Natural Science Foundation of China(51378487 ; Youth Innovation Promotion Association, CAS(2014037) ; 51425405)
WOS记录号WOS:000427616900026
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24127
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing Engn Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China
3.Zhejiang Univ, Coll Chem & Biol Engn, Ind Ecol & Environm Res Inst, Hangzhou 310027, Zhejiang, Peoples R China
4.Adm Ctr Chinas Agenda 21, Beijing 100039, Peoples R China
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GB/T 7714
Cao, Zhiqin,Zheng, Xiaohong,Cao, Hongbin,et al. Efficient reuse of anode scrap from lithium-ion batteries as cathode for pollutant degradation in electro-Fenton process: Role of different recovery processes[J]. CHEMICAL ENGINEERING JOURNAL,2018,337:256-264.
APA Cao, Zhiqin.,Zheng, Xiaohong.,Cao, Hongbin.,Zhao, He.,Sun, Zhi.,...&Zhou, Bin.(2018).Efficient reuse of anode scrap from lithium-ion batteries as cathode for pollutant degradation in electro-Fenton process: Role of different recovery processes.CHEMICAL ENGINEERING JOURNAL,337,256-264.
MLA Cao, Zhiqin,et al."Efficient reuse of anode scrap from lithium-ion batteries as cathode for pollutant degradation in electro-Fenton process: Role of different recovery processes".CHEMICAL ENGINEERING JOURNAL 337(2018):256-264.
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