CAS OpenIR
Separation of V (V) and Mo (VI) in roasting-water leaching solution of spent hydrodesulfurization catalyst by co-extraction using P507-N235 extractant
Li, Hailong1,2; Feng, Yali1; Wang, Hongjun1,2; Li, Haoran2; Wu, Hao1
2020-10-01
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume248Pages:8
AbstractP507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) - N235 (trioctyl tertiary amine), diluted with kerosene, was used for separation of vanadium (V) and molybdenum (VI) from roasting-water leaching solution generated by spent hydrodesulfurization catalyst. Due to the leach solutions contain impurities like aluminum (Al) and magnesium (Mg), the effects of various conditions on the separation of V (V), Mo (VI), Al and Mg were investigated. Upon using 20% P507 - N235 (P507: N235 = 2:1) (v/v) as the extractant, kerosene as the diluent and 5% tributyl phosphate (v/v) as the phase modifier, 94.81% V (V) and 95.78% Mo (VI) were obtained in a phase ratio (O/A) of 2 (7 min at 298.15 K in a single-stage contract) and aqueous pH of 1.8. After a two-stage of countercurrent extraction, over 99% V (V) and Mo (VI) were extracted while less than 1% Al and Mg were co-extracted. Upon a three-stage countercurrent stripping with 2.5 mol/L sulfuric acid at a phase ratio (O/A) of 2, the complete removal of vanadium (V) from the loaded organic phase could be achieved. In the selective stripping of molybdenum (VI), almost all of the molybdenum (VI) was stripped after two-stage countercurrent stripping using 2.5 mol/L ammonia. Both oxide components of vanadium and molybdenum can be achieved by further processing of stripped solutions, respectively. In addition, thermodynamic calculations showed that vanadium (V) extraction from the roasting-water leaching solution using P507 - N235 is an irreversible, exothermic reaction at 298.15 - 338.15 K.
KeywordSpent hydrodesulfurization catalyst Vanadium (V) Molybdenum (VI) Co-extraction Thermodynamics
DOI10.1016/j.seppur.2020.117135
Language英语
WOS KeywordSULFURIC-ACID-SOLUTION ; SOLVENT-EXTRACTION ; MOLYBDENUM VI ; STONE COAL ; SULFATE-SOLUTIONS ; LIX 63 ; VANADIUM ; RECOVERY ; IRON ; MANGANESE
Funding ProjectChina Ocean Mineral Resource RD Association[DY135-B2-15] ; Major science and technology program for water pollution control and treatment[2015ZX07205-003] ; National Natural Science Foundation of China[21176242] ; National Natural Science Foundation of China[21176026]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationChina Ocean Mineral Resource RD Association ; Major science and technology program for water pollution control and treatment ; National Natural Science Foundation of China
WOS IDWOS:000538827600096
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41107
Collection中国科学院过程工程研究所
Corresponding AuthorFeng, Yali; Wang, Hongjun
Affiliation1.Univ Sci & Technol Beijing, Civil & Resource Engn Sch, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Hailong,Feng, Yali,Wang, Hongjun,et al. Separation of V (V) and Mo (VI) in roasting-water leaching solution of spent hydrodesulfurization catalyst by co-extraction using P507-N235 extractant[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2020,248:8.
APA Li, Hailong,Feng, Yali,Wang, Hongjun,Li, Haoran,&Wu, Hao.(2020).Separation of V (V) and Mo (VI) in roasting-water leaching solution of spent hydrodesulfurization catalyst by co-extraction using P507-N235 extractant.SEPARATION AND PURIFICATION TECHNOLOGY,248,8.
MLA Li, Hailong,et al."Separation of V (V) and Mo (VI) in roasting-water leaching solution of spent hydrodesulfurization catalyst by co-extraction using P507-N235 extractant".SEPARATION AND PURIFICATION TECHNOLOGY 248(2020):8.
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