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
发表期刊ACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
卷号5期号:8页码:6674-6681
摘要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.
关键词Green Separation Boehmite Chromate Solutions In Situ Synthesis And Synchronous Adsorption Hazardous Residues Reduction
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1021/acssuschemeng.7b00918
收录类别SCI
语种英语
关键词[WOS]GOETHITE ALPHA-FEOOH ; ACTIVATED CARBON ; AQUEOUS-SOLUTION ; ALUMINUM-OXIDE ; CHROMIUM ; BOEHMITE ; VANADIUM ; EXTRACTION ; CHROMATE ; REMOVAL
WOS研究方向Chemistry ; Engineering
WOS类目Chemistry, Multidisciplinary ; Engineering, Chemical
项目资助者National Natural Science Foundation of China(51574212 ; Major State Basic Research Development Program of China(2013CB632605) ; U1403195)
WOS记录号WOS:000407410900036
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23187
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.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
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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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