Recovery of Ru(III) from hydrochloric acid by cloud point extraction with 2-Mercaptobenzothiazole-functionalized ionic liquid
文献类型： 外文期刊
作者： Zhang, Hong 1 ; Yang, Xiaoyu 1 ; Liu, Zhaohui 2 ; Yang, Yanzhao 1 ;
作者机构： 1.Shandong Univ, Sch Chem & Chem Engn, Educ Minist, Key Lab Special Funct Aggregated Mat, Jinan 250100, Peoples R China
2.Shandong Acad Agr Sci, Jinan 250100, Peoples R China
关键词： Ru(III);Functional ionic liquids;Cloud point extraction;2-Mercaptobenzothiazole;Extraction mechanism
期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.273； 五年影响因子：11.529 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： An arisen and environment-friendly method of cloud point extraction (CPE) which involved Octylphenoxypolyethoxyethanol (TX-114) as surfactant and 2-Mercaptobenzothiazole-functionalized ionic liquid as extractant was carried out to separate Ru(III) from aqueous phase to bottom surfactant phase for the first time. A host of variable (e.g., the extractant concentration, hydrochloric acid concentration, nitric acid concentration, TX-114 mass fraction, TX-114 volume and sodium chloride concentration) were evaluated and optimized to investigate the extraction behavior. At optimized experimental conditions, the extraction percentage of Ru(III) was found to be 82%, together with the enrichment factor of 40. A special complexation extraction mechanism of Ru(III) in CPE process was studied systemically and confirmed via job method, UV-vis spectrum and FT-IR spectrum in detail. Taking together, the rational-designed functional ionic liquid as a novel extractant exhibited superior extractability for Ru (III) in CPE system. (C) 2016 Elsevier B.V. All rights reserved.
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