Removal of vanadium and chromium from vanadium wastewaters with amino-functionalized γ-AlOOH

被引：18
|
作者：
Zhang, Hailin [1 ]
Li, Ping [1 ,3 ]
Zhang, Xin [2 ]
Chen, Xing [1 ]
Liu, Wenke [1 ]
Luo, Ling [1 ]
Han, Yunwu [3 ]
Fan, Bingqiang [1 ]
Zheng, Shili [1 ]
Wang, Zheming [2 ]
Zhang, Yi [1 ]
机构：
[1] Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, 1 North 2nd St, Beijing 100190, Peoples R China
[2] Pacific Northwest Natl Lab, Phys & Computat Sci Directorate, 902 Battelle Blvd, Richland, WA 99354 USA
[3] Chinese Acad Sci, Ganjiang Innovat Acad, Jiangxi Prov Key Lab Cleaner Prod Rare Earths, 1 Kexueyuan Rd, Ganzhou 341100, Jiangxi, Peoples R China
来源：
HYDROMETALLURGY | 2022年 / 210卷
基金：
中国国家自然科学基金;
关键词：
Amino-functionalized boehmite; Adsorption; Vanadium industrial wastewaters; V(V); Cr(VI); POLYANILINE HYBRID HYDROGEL; ORGANIC-INORGANIC HYBRID; SELECTIVE ADSORPTION; MICROBIAL REDUCTION; AGRICULTURAL WASTE; EFFICIENT REMOVAL; ACTIVATED CARBON; ENERGY-STORAGE; COMPOSITE; CR(VI);
D O I：
10.1016/j.hydromet.2022.105841
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Chitosan-modified boehmite (AF-gamma-AlOOH) was synthesized, characterized and used as adsorbent for removing vanadium and chromium from vanadium industrial wastewaters. Batch V(V) adsorption data showed that AF gamma-AlOOH possessed a V(V) adsorption capacity of 217 mg/g. The adsorption behavior followed the Langmuir isotherm model and pseudo second-order kinetics. The adsorption process was spontaneous and endothermic. Continuous fixed-bed column adsorption measurements showed that V(V) and Cr(VI) could be simultaneously decreased to less than the national emission standards (0.5 mg/L). The adsorbed AF-gamma-AlOOH could be recycled by separating V(V) and Cr(VI). The XPS results indicated that the V(V) and Cr(VI) first interacted with functional groups such as -OH and -NH2 of AF-gamma-AlOOH, and then was partially reduced to V(IV) and Cr(III), respectively. A whole process was proposed to realize separation and recovery of V(V) and Cr(VI) from the vanadium industrial wastewaters.
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页数：9
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