Step-Adsorption of Vanadium (V) and Chromium (VI) in the Leaching Solution with Melamine

被引：26

作者：

Peng, Hao ^{[1
]}

Shang, Qian ^{[1
]}

Chen, Ronghua ^{[1
]}

Zhang, Liuying ^{[1
]}

Chen, Ya ^{[1
]}

Guo, Jing ^{[1
]}

机构：

[1] Yangtze Normal Univ, Coll Chem & Chem Engn, Chongqing Key Lab Inorgan Special Funct Mat, Chongqing 408100, Peoples R China

来源：

SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期

关键词：

METAL-ORGANIC FRAMEWORKS; SOLVENT-EXTRACTION; METHYLENE-BLUE; STONE COAL; RECOVERY; SLAG; KINETICS; ISOTHERM; TECHNOLOGY; MECHANISM;

D O I：

10.1038/s41598-020-63359-z

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The vanadium (V) and chromium (VI) was hard to separate directly due to the similar nature. In this paper, separation and recovery of vanadium (V) and chromium (VI) from a leaching solution was investigated by adsorption of vanadium (V) with melamine, followed by electro-reduction of chromium (VI) and adsorption of chromium (III) with melamine, respectively. The effects of experimental parameters including dosage of melamine, reaction temperature and reaction time on the adsorption process were investigated. The results showed that melamine was a good sorbent for adsorption of vanadium (V) and chromium (III). 99.89% of vanadium (V) was adsorbed by melamine at the optimal conditions, the adsorption kinetic was followed the pseudo-second-order model and the adsorption isotherm conformed to the Langmuir model. While the adsorption of chromium (III) was followed the pseudo-first-order model and the adsorption isotherm was conformed to the Freundlich model as the adsorption efficiency was 98.63% under optimal conditions.

引用

页数：11

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