Efficient electrochemical recovery of fine tellurium powder from hydrochloric acid media via mass transfer enhancement
Jin, Wei1,3; Su, Junling3; Chen, Shifu2; Li, Ping3; Moats, Michael S.4; Maduraiveeran, Govindhan5; Lei, Hong2

Recovery of tellurium from industrial waste streams is of significant importance for the supply of this scattered element. In order to overcome the bottlenecks of high reagents consumption and low recovery efficiency in conventional processes, a novel electrochemical recovery of Te from hydrochloric acid solution was first developed using low-cost stainless steel plate. Due to the high mobility of Te in HCl systems, there is a good electrodeposition behavior of Te(IV) from both the thermodynamic and kinetic considerations. It has been identified that Te electrodeposition is diffusion controlled quasi-reversible reaction, in which the mass transfer can significantly determine the recovery performance and deposit quality. Therefore, a cylinder turbulent reactor with larger surface area cathode was employed for the extraction of tellurium from dilute solution. Microscale Te powder was successfully obtained with a recovery ratio of 96.1% and a current efficiency of 84.3%, while the side reactions of chlorine evolution and TeO2 formation were efficiently inhibited. This mass transfer-enhanced electrodeposition may serve as a promising alternative to overcome the drawbacks of existing valuable element recovery and water purification.

KeywordTellurium Electrodeposition Mass Transfer Scattered Metals Recovery
WOS KeywordContinuous-casting Mold ; Copper ; Electrodeposition ; Films ; Transport ; Selenium ; Sludge
Funding ProjectNational Natural Science Foundation of China[51604253] ; National Natural Science Foundation of China[U1460108] ; MOE SAFEA[B13025]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; MOE SAFEA
WOS IDWOS:000436051500014
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Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorJin, Wei; Lei, Hong
Affiliation1.Jiangnan Univ, Sch Chem & Mat Engn, Minist Educ, Key Lab Synthet & Biol Colloids, Wuxi 214122, Peoples R China
2.Northeastern Univ, Minist Educ, Key Lab Electromagnet Proc Mat, Shenyang 110819, Liaoning, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
4.Missouri Univ Sci & Technol, Mat Res Ctr, Rolla, MO 65409 USA
5.SRM Univ, Dept Chem, Res Inst, Madras 603203, Tamil Nadu, India
Recommended Citation
GB/T 7714
Jin, Wei,Su, Junling,Chen, Shifu,et al. Efficient electrochemical recovery of fine tellurium powder from hydrochloric acid media via mass transfer enhancement[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2018,203:117-123.
APA Jin, Wei.,Su, Junling.,Chen, Shifu.,Li, Ping.,Moats, Michael S..,...&Lei, Hong.(2018).Efficient electrochemical recovery of fine tellurium powder from hydrochloric acid media via mass transfer enhancement.SEPARATION AND PURIFICATION TECHNOLOGY,203,117-123.
MLA Jin, Wei,et al."Efficient electrochemical recovery of fine tellurium powder from hydrochloric acid media via mass transfer enhancement".SEPARATION AND PURIFICATION TECHNOLOGY 203(2018):117-123.
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