Articles


Document Type
Journal article (JA)
Title
Leaching of indium from end-of-life LCD panels via catalysis by synergistic microbial communities
Author
Xie, Yaling (1); Wang, Shuhua (2, 3); Tian, Xiaochun (2); Che, Liming (1); Wu, Xuee (1); Zhao, Feng (2)
Address
(1) Department of Chemical & Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen; 361005, China (2) CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen; 361021, China (3) University of Chinese Academy of Sciences, Beijing; 100049, China
RPAddress
Email
ResearchID
ORCID
Journal
Science of the Total Environment
Publisher
Elsevier B.V.
ISSN
0048-9697
Published
2019-03-10, 655 ():781-786.
JCR
ImpactFactor
ISBN
Fund_Code
HYMC
HYDD
HYKSRQ
HYJSRQ
HYLWLB
HYJB
Keywords
Bioleaching; Catalysis; Electronic Waste; Indium; Microorganisms
Abstract
Currently, a large amount of discarded liquid crystal displays (LCDs) are being produced, and the improper treatment of discarded LCDs causes serious environmental pollution problems. Indium is the most valuable metal in LCDs and is present in such devices at a concentration of over 0.025%. In this study, the bioleaching of indium from end-of-life LCD panels was comprehensively investigated through three methods: S-mediated pathway, Fe-mediated pathway and Mixed pathway of S- and Fe-mediated, which yielded maximum bioleaching efficiencies of approximately 100%, 0% and 78%, respectively. Microbial community analysis showed that the dominant functional bacteria under the S-mediated pathway were Acidithiobacillus. The Acidithiobacillus genus catalysed the leaching of indium, which was mainly achieved by indirect bioleaching. In addition, the microorganisms can secrete enzymes and extracellular polymeric substances, which also contributed to the leaching of indium. Therefore, this work provides an economical and efficient biological method for future research and practical applications in indium recovery from solid waste. ? 2018 Elsevier B.V.
WOS Categories
Accession Number
EI收录号
20184806141246
DOI
10.1016/j.scitotenv.2018.11.141
ESI_Type
ENVIRONMENT/ECOLOGY
Collection
EI

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