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Recovery of high purity Si from kerf-loss Si slurry waste by flotation method using PEA collector
Jingwei Li1,5; Yinhe Lin2,3; Jian Shi1; Boyuan Ban1; Jifei Sun1; Yong Ma4; Fanmao Wang5; Wei Lv5; Jian Chen1
2020
Source PublicationWaste Management
ISSN0956-053X
Corresponding AuthorLi, Jingwei(jwli@rntek.cas.cn) ; Lin, Yinhe(linyinhe2009@163.com) ; Chen, Jian(jchen@rntek.cas.cn)
AbstractSeparation and recovery of high-purity Si powder from kerf-loss Si slurry waste is a critical challenge for the photovoltaic industry. A green surfactant poly (propylene glycol) bis (2-aminopropyl ether) (PEA) was employed as a collector to facilitate the separation of Si and SiC from kerf-loss Si waste during flotation process. Single flotation tests of Si and SiC were conducted using 5 x 10(-6) mol/L PEA, respectively. The separation efficiencies of Si and SiC in conjunction with PEA adsorption mechanism were investigated. It was found that the maximum recoveries rate of SiC and Si were 90.59% (pH 9.00) and 80.93% (pH 1.96), respectively. Furthermore, the maximum Si grade was determined as 92.31% at pH 8.95 for the sinking part of the mixture generating excellent floatability and selectivity. Zeta potential measurements, FT-IR spectra, and XPS analyses demonstrated that PEA was present on the surface of Si and SiC through electrostatic and hydrogen-bond interactions. The adsorption mechanism was explained based on the results. This research provides an efficient and environmentally friendly route for the separation and recovery of high purity silicon from kerf-loss Si waste. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordKerf-loss silicon waste Poly (propylene glycol) bis (2-aminopropyl ether) Si recovery Flotation separation Adsorption mechanism
DOI10.1016/j.wasman.2020.07.023
WOS KeywordDIAMOND-WIRE SAW ; SILICON-CARBIDE ; SURFACE-MODIFICATION ; SEPARATION ; POWDER ; TECHNOLOGY ; REMOVAL ; ROUTE ; ACID
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51874272] ; National Natural Science Foundation of China[51804294] ; National Natural Science Foundation of China[U1960101] ; State Key Laboratory of Refractories and Metallurgy (Wuhan University of Science and Technology)[G201910] ; Anhui Provincial Natural Science Foundation[1808085ME121] ; Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences[PECL2018QN002] ; Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences[PECL2019ZD005] ; Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences[PECL2019KF003] ; State Key Laboratory of Pollution Control and Resource Reuse Foundation (Tongji University), iCET[PCRRF18017]
Funding OrganizationNational Natural Science Foundation of China ; State Key Laboratory of Refractories and Metallurgy (Wuhan University of Science and Technology) ; Anhui Provincial Natural Science Foundation ; Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; State Key Laboratory of Pollution Control and Resource Reuse Foundation (Tongji University), iCET
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000557443100001
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/42573
Collection中科院固体物理研究所
Affiliation1.Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
2.Energy and Environment Engineering Institute, Nanchang Institute of Technology, Nanchang 330000, China
3.School of Chemistry Engineering, Yangtze Normal University, Chongqing 408000, China
4.School of Computer and Information Engineering, Jiangxi Normal University, Nanchang 330022, China
5.Department of Materials Science and Engineering, University of Toronto, Toronto M5S 3E4, Canada
Recommended Citation
GB/T 7714
Jingwei Li,Yinhe Lin,Jian Shi,et al. Recovery of high purity Si from kerf-loss Si slurry waste by flotation method using PEA collector[J]. Waste Management,2020,115.
APA Jingwei Li.,Yinhe Lin.,Jian Shi.,Boyuan Ban.,Jifei Sun.,...&Jian Chen.(2020).Recovery of high purity Si from kerf-loss Si slurry waste by flotation method using PEA collector.Waste Management,115.
MLA Jingwei Li,et al."Recovery of high purity Si from kerf-loss Si slurry waste by flotation method using PEA collector".Waste Management 115(2020).
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