Selective adsorption of AuCl 4 − on chemically modified D301 resin with containing N/S functional polymer
| Autor: | Min Li, Jian-Feng Gao, He-Yang Wang, Rui-Yan Wu, Tuo-Ping Hu, Xu-Dong Guo, Wei-Zhou Jiao, Fu-Qiang An |
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| Rok vydání: | 2017 |
| Předmět: |
Glycidyl methacrylate
Process Chemistry and Technology Inorganic chemistry Hydrochloric acid Ethylenediamine 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Pollution 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry Thiourea Selective adsorption Desorption Chemical Engineering (miscellaneous) 0210 nano-technology Selectivity Waste Management and Disposal |
| Zdroj: | Journal of Environmental Chemical Engineering. 5:10-15 |
| ISSN: | 2213-3437 |
| DOI: | 10.1016/j.jece.2016.11.010 |
| Popis: | In this study, Poly(glycidyl methacrylate) (PGMA) was grafted onto the surface of the weak basic D301 resin. Subsequently, two new adsorbents, D301- g -EDAPGMA and D301- g -THIOPGMA, were obtained successfully through ringopening reactions between the epoxide rings of PGMA and the amine of ethylenediamine and thiourea. The adsorption and recognition properties of these two adsorbents for AuCl 4 − were studied through batch method. The experimental results showed that D301- g -EDAPGMA and D301- g -THIOPGMA possess strong adsorption ability and excellent recognition selectivity for AuCl 4 − , and pH has a great influence on the adsorption capacity in the studied pH range. The adsorption of D301- g -EDAPGMA and D301- g -THIOPGMA towards AuCl 4 − is a typical monomolecular layer adsorption. The adsorption capacity of D301- g -EDAPGMA and D301- g -THIOPGMA for AuCl 4 − reaches 274.7 and 300.4 mg g −1 at 298 K and pH of 2, respectively. D301- g -EDAPGMA and D301- g -THIOPGMA can be used to adsorb AuCl 4 − electively from gold-bearing chloride solution. In addition, the desorption of AuCl 4 − from adsorbent is effective using mixture of acetone and 1 mol L −1 of hydrochloric acid as eluent. Consecutive adsorption-desorption experiments showed that D301- g -EDAPGMA and D301- g -THIOPGMA could be reused with 1.9% of adsorption capacity loss. |
| Databáze: | OpenAIRE |
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