Three-Liquid-Phase Extraction: A New Approach for Simultaneous Enrichment and Separation of Cr(III) and Cr(VI)
文献类型：期刊论文
| 作者 | Xie, Keng1,2,3; Huang, Kun1; Yang, Liangrong1; Yu, Pinhua1,2,3; Liu, Huizhou1 |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2011-11-16 |
| 卷号 | 50期号:22页码:12767-12773 |
| 关键词 | atomic-absorption-spectrometry electroplating waste-water liquid-liquid-extraction cloud point extraction n-butyl-phosphate solvent-extraction phosphoric-acid facilitated transport hexavalent chromium industrial-waste |
| ISSN号 | 0888-5885 |
| 其他题名 | Ind. Eng. Chem. Res. |
| 中文摘要 | A novel and simple three-liquid-phase extraction (TLPE) approach was developed for the simultaneous removal and separation of Cr(III)) and Cr(VI)) from aqueous, solutions. The, proposed three-liquid-phase system (TLPS) consists of di(2-ethylhexyl)phosphoric acid, (D2EHPA), poly(ethylene glycol) (PEG) with a molecular Weight of 2000, and (NH(4))(2)SO(4). The effects of various factors including the aqueous solution pH, amounts Of (NH(4))(2)SO(4) and PEG, initial chromium amount, D2EHPA, concentration, phase mixing time; and diluent on the three-phase partitioning behavior of Cr(11) and Cr(VI) were evaluated, The distribution behavior of the two oxidation states of chromium was found to be highly pH-dependent. Cr(III) preferred the D2EHPA-rich top, phase through a cation exchange reaction, whereas. Cr(VI) was enriched in the PEG-rich Middle phase through : ion pair formation By appropriate selection of the extraction conditions, nearly all of the Cr(III),Was extracted into the D2EHPA top phase; and More than 90% of the Cr(VI) was transferred into the PEG rich Middle phase within 5 min. The present work highlights the possibility of Using the TLPE approach for the extraction and Separation of two different oxidation states of metal ions, such as Cr(III) and Cr(VI), in a single extraction step. |
| 英文摘要 | A novel and simple three-liquid-phase extraction (TLPE) approach was developed for the simultaneous removal and separation of Cr(III)) and Cr(VI)) from aqueous, solutions. The, proposed three-liquid-phase system (TLPS) consists of di(2-ethylhexyl)phosphoric acid, (D2EHPA), poly(ethylene glycol) (PEG) with a molecular Weight of 2000, and (NH(4))(2)SO(4). The effects of various factors including the aqueous solution pH, amounts Of (NH(4))(2)SO(4) and PEG, initial chromium amount, D2EHPA, concentration, phase mixing time; and diluent on the three-phase partitioning behavior of Cr(11) and Cr(VI) were evaluated, The distribution behavior of the two oxidation states of chromium was found to be highly pH-dependent. Cr(III) preferred the D2EHPA-rich top, phase through a cation exchange reaction, whereas. Cr(VI) was enriched in the PEG-rich Middle phase through : ion pair formation By appropriate selection of the extraction conditions, nearly all of the Cr(III),Was extracted into the D2EHPA top phase; and More than 90% of the Cr(VI) was transferred into the PEG rich Middle phase within 5 min. The present work highlights the possibility of Using the TLPE approach for the extraction and Separation of two different oxidation states of metal ions, such as Cr(III) and Cr(VI), in a single extraction step. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | ATOMIC-ABSORPTION-SPECTROMETRY ; ELECTROPLATING WASTE-WATER ; LIQUID-LIQUID-EXTRACTION ; CLOUD POINT EXTRACTION ; N-BUTYL-PHOSPHATE ; SOLVENT-EXTRACTION ; PHOSPHORIC-ACID ; FACILITATED TRANSPORT ; HEXAVALENT CHROMIUM ; INDUSTRIAL-WASTE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000296674500051 |
| 公开日期 | 2013-11-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6512]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Green Proc & Engn, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Keng,Huang, Kun,Yang, Liangrong,et al. Three-Liquid-Phase Extraction: A New Approach for Simultaneous Enrichment and Separation of Cr(III) and Cr(VI)[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2011,50(22):12767-12773. |
| APA | Xie, Keng,Huang, Kun,Yang, Liangrong,Yu, Pinhua,&Liu, Huizhou.(2011).Three-Liquid-Phase Extraction: A New Approach for Simultaneous Enrichment and Separation of Cr(III) and Cr(VI).INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,50(22),12767-12773. |
| MLA | Xie, Keng,et al."Three-Liquid-Phase Extraction: A New Approach for Simultaneous Enrichment and Separation of Cr(III) and Cr(VI)".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 50.22(2011):12767-12773. |
入库方式： OAI收割
来源：过程工程研究所
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