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In Situ Synthesis of gamma-AlOOH and Synchronous Adsorption Separation of V(V) from Highly Concentrated Cr(VI) Multiplex Complex solutions
Zhang, Hailin1,2; Li, Ping1; Wang, Zheming3; Zhang, Xin3; Zheng, Shili1; Zhang, Yi1
2017-08-01
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
Volume5Issue:8Pages:6674-6681
Abstract

Boehmite (gamma-AlOOH) was synthesized to selectively adsorb V(V) from K2CrO4-KVO3-H2O solutions with highly concentrated Cr(VI) and low concentration V(V). The synthesized gamma-AlOOH has a BET surface area of 433.2 m(2)/g and an average pore size of 3.5 nm. It possesses a maximum adsorption capacity of V(V) of 1.53 mmol/g from K2CrO4-KVO3-H2O solutions. The adsorption of V(V) onto gamma-AlOOH follows the Langmuir isotherm model and pseudo-second-order kinetics equation by forming inner sphere complexes while the Cr(VI) adsorption forms both inner-sphere and outer-sphere chromate complexes depending on solution pH. The gamma-AlOOH was further synthesized in situ by adding HNO3 into the K2CrO4-KAlO2-KVO3-H2O solutions and then used for synchronous adsorption of V(V) and Cr(VI), resulting in increased adsorption capacity of V(V) of 2.88 mmol/g and decreased adsorption capacity of Cr(VI) to 0.073 mmol/g, respectively. In the latter process, adsorption pH values were adjustable, and adsorption reached equilibrium instantaneously, supporting a novel in situ synthesis and adsorption integration strategy with adjustable surface charge of adsorbent and disappearance of diffusion effect.

KeywordGreen Separation Boehmite Chromate Solutions In Situ Synthesis And Synchronous Adsorption Hazardous Residues Reduction
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/acssuschemeng.7b00918
Indexed BySCI
Language英语
WOS KeywordGoethite Alpha-feooh ; Activated Carbon ; Aqueous-solution ; Aluminum-oxide ; Chromium ; Boehmite ; Vanadium ; Extraction ; Chromate ; Removal
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China(51574212 ; Major State Basic Research Development Program of China(2013CB632605) ; U1403195)
WOS IDWOS:000407410900036
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23187
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Nat Engn Lab Hydromet Cleaner Prod Technol, 1 North Second St, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Pacific Northwest Natl Lab, Phys & Computat Sci Directorate, Richland, WA 99354 USA
Recommended Citation
GB/T 7714
Zhang, Hailin,Li, Ping,Wang, Zheming,et al. In Situ Synthesis of gamma-AlOOH and Synchronous Adsorption Separation of V(V) from Highly Concentrated Cr(VI) Multiplex Complex solutions[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2017,5(8):6674-6681.
APA Zhang, Hailin,Li, Ping,Wang, Zheming,Zhang, Xin,Zheng, Shili,&Zhang, Yi.(2017).In Situ Synthesis of gamma-AlOOH and Synchronous Adsorption Separation of V(V) from Highly Concentrated Cr(VI) Multiplex Complex solutions.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,5(8),6674-6681.
MLA Zhang, Hailin,et al."In Situ Synthesis of gamma-AlOOH and Synchronous Adsorption Separation of V(V) from Highly Concentrated Cr(VI) Multiplex Complex solutions".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 5.8(2017):6674-6681.
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