CAS OpenIR
Efficient recovery of scrapped V2O5-WO3/TiO2 SCR catalyst by cleaner hydrometalurgical process
Lou, Wenbo1,2; Zhang, Yang2; Zheng, Shili2; Li, Ping2; Zhang, Ying2; Zhang, Yi2; Zhao, Bo3; Li, Zhefei3; Jin, Wei2
2019-08-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume187Pages:45-53
AbstractChina generates a large number of scrapped selective catalytic reduction (SCR) catalysts in the fossil fuel combustion plants every year. As a result, there is a giant quantity of 5 x 10(5)t scrapped V2O5-WO3/TiO2 SCR catalyst annually worldwide, in which arsenic poisoning is a major cause of catalysts deactivation. In this study, a novel cleaner recovery process of alkaline-acid stepwise leaching was proposed for the high-arsenic scrapped SCR catalysts to achieve excellent arsenic removal and structural reforming. It is found that arsenic can be completely removed from 1.92% to below the detection limit, and the surface area of regenerated catalysts is restored to 31 m(2)/g (similar to that of commercial catalysts). In the subsequent pickling and regeneration, Na+ can be eliminated to obtain anatase-type TiO2 for further activity recovery. Besides, valuable elements (W, V) have been successfully recycled by leaching the As-containing solid waste with ammonium salt. After replenishing active components, regenerated catalyst exhibits comparable activity with the commercial fresh catalyst, offering a promising method for scrapped catalyst recovery and further understanding of cleaner produces for waste management.
KeywordScrapped SCR catalyst Cleaner hydrometallurgical recovery Arsenic removal reaction Restructure Ctalyst regeneration
DOI10.1016/j.hydromet.2019.05.003
Language英语
WOS KeywordLOW-TEMPERATURE SCR ; V2O5-WO3-TIO2SCR CATALYST ; RAMAN-SPECTRA ; TIO2 CATALYST ; DEACTIVATION ; REGENERATION ; REDUCTION ; MECHANISM ; PERFORMANCE ; ALUNITE
Funding ProjectNational Natural Science Foundation of China[51674230] ; National Natural Science Foundation of China[51761135108]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000477785100006
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30361
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Yang; Jin, Wei
Affiliation1.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
2.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
3.Zhejiang Tuna Environm Sci & Technol Co Ltd, Shaoxing 312000, Peoples R China
Recommended Citation
GB/T 7714
Lou, Wenbo,Zhang, Yang,Zheng, Shili,et al. Efficient recovery of scrapped V2O5-WO3/TiO2 SCR catalyst by cleaner hydrometalurgical process[J]. HYDROMETALLURGY,2019,187:45-53.
APA Lou, Wenbo.,Zhang, Yang.,Zheng, Shili.,Li, Ping.,Zhang, Ying.,...&Jin, Wei.(2019).Efficient recovery of scrapped V2O5-WO3/TiO2 SCR catalyst by cleaner hydrometalurgical process.HYDROMETALLURGY,187,45-53.
MLA Lou, Wenbo,et al."Efficient recovery of scrapped V2O5-WO3/TiO2 SCR catalyst by cleaner hydrometalurgical process".HYDROMETALLURGY 187(2019):45-53.
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