CAS OpenIR
Degradation of potassium alkyl xanthogenate in wet air oxidation: Enhancement method, degradation mechanism and structure impact
Sun, Sihan1,3; Ren, Mingzhu1; Pan, Fusheng3; Yuan, Ling1; Ning, Pengge1,2; Sun, Zhi1,2; Xie, Yongbing1,2; Cao, Hongbin1,2,3
2022-04-01
Source PublicationJOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
ISSN2213-2929
Volume10Issue:2Pages:9
AbstractWet air oxidation (WAO) is suitable for high concentration organic wastewater treatment, but the oxidation efficiency still needs to be improved and the reaction mechanism is not clear. This work explored the enhancement of different chemicals to the WAO of typical pollutants in metallurgical wastewater and found that persulfate promoted WAO (PWAO) is very efficient in mineralization of potassium ethyl xanthate. The degradation rate and COD removal rate was over 99% and 96% after 30 min reaction, respectively. The oxidation of alkyl xanthate followed the pseudo first-order kinetics, with the constant order of potassium amyl xanthate > potassium ethyl xanthate > potassium butyl xanthate > potassium isopropyl xanthate. The EPR result confirmed that hydroxyl radicals (.OH) was the dominant active species in the WAO and PWAO processes, and persulfate significantly increased the production of .OH. It was found that the electrophilic reactivity s-(1S) of the S atom in the -C--S and the lipophilic coefficient ClgP of xanthate were the main factors affecting the degradation of xanthate, by constructing a quantitative structure-activity relationship model. The results reveal that PWAO can be used in efficient degradation of flotation reagents, based on which a green metal leaching process and simultaneous organics degradation can be possibly developed in future.
KeywordWet air oxidation Xanthate Advanced oxidation processes Wastewater treatment Density functional theory
DOI10.1016/j.jece.2022.107349
Language英语
WOS KeywordMOLECULAR-ORBITAL METHODS ; BASIS-SETS ; ETHYL-XANTHATE ; KINETICS ; REMOVAL ; PERSULFATE ; ATOMS
Funding ProjectNational Key Research and Development Program, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21021102] ; 14th Five-year Informatization Plan of Chinese Academy of Sciences, Construction of Scientific Data Center System[WX145XQ07-12]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Key Research and Development Program, Strategic Priority Research Program of the Chinese Academy of Sciences ; 14th Five-year Informatization Plan of Chinese Academy of Sciences, Construction of Scientific Data Center System
WOS IDWOS:000788091400008
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/53120
Collection中国科学院过程工程研究所
Corresponding AuthorPan, Fusheng; Xie, Yongbing
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Natl Basic Publ Sci Data Ctr, Beijing 100190, Peoples R China
3.Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Sun, Sihan,Ren, Mingzhu,Pan, Fusheng,et al. Degradation of potassium alkyl xanthogenate in wet air oxidation: Enhancement method, degradation mechanism and structure impact[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2022,10(2):9.
APA Sun, Sihan.,Ren, Mingzhu.,Pan, Fusheng.,Yuan, Ling.,Ning, Pengge.,...&Cao, Hongbin.(2022).Degradation of potassium alkyl xanthogenate in wet air oxidation: Enhancement method, degradation mechanism and structure impact.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,10(2),9.
MLA Sun, Sihan,et al."Degradation of potassium alkyl xanthogenate in wet air oxidation: Enhancement method, degradation mechanism and structure impact".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 10.2(2022):9.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun, Sihan]'s Articles
[Ren, Mingzhu]'s Articles
[Pan, Fusheng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun, Sihan]'s Articles
[Ren, Mingzhu]'s Articles
[Pan, Fusheng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun, Sihan]'s Articles
[Ren, Mingzhu]'s Articles
[Pan, Fusheng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.