Removal of chromium(VI) from wastewater using weakly and strongly basic magnetic adsorbents: adsorption/desorption property and mechanism comparative studies
文献类型：期刊论文
| 作者 | Sun, Xitong1; Li, Qian2; Yang, Liangrong3; Liu, Huizhou1,3 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:22页码:18471-18482 |
| 关键词 | AQUEOUS-SOLUTION HEXAVALENT CHROMIUM RAPID REMOVAL METAL-IONS CR(VI) ADSORPTION NANOPARTICLES MICROSPHERES SEPARATION CHITOSAN |
| ISSN号 | 2046-2069 |
| 通讯作者 | Sun, XT |
| 英文摘要 | Two novel strongly basic magnetic adsorbents, quaternary ammonium-modified polystyrene and chitosan magnetic microspheres (Pst-MIMCl and CTS-GTMAC), were prepared using the in situ coprecipitation and emulsion cross-linking methods under mild conditions, with features of strong magnetic responsiveness and high quaternary ammonium group contents. The Cr(VI) adsorption/desorption properties and mechanisms of strongly and weakly basic magnetic adsorbents were compared through simulated wastewater. The strongly basic adsorbent exhibited low pH dependence, and the main adsorption mechanism was ion exchange. The weakly basic adsorbent exhibited high pH dependence, and the major adsorption mechanism was electrostatic attraction. Besides, the strongly basic adsorbent required higher desorption conditions than the weakly basic adsorbent owing to the difference of the desorption mechanisms. Furthermore, the removal selectivity of the strongly and weakly basic magnetic adsorbents was estimated by the chromium plating wastewater. The results demonstrated that the strongly basic magnetic adsorbents exhibited higher selectivity than the weakly basic magnetic adsorbents. In addition, the Pst-MIMCl was selected as the optimal magnetic adsorbent for Cr(VI) recovery from wastewater, with the advantages of strongly magnetic responsiveness, wide pH applicable range, high removal efficiency, high adsorption selectivity and good reusability. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Chemistry, Multidisciplinary ; Chemistry |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | AQUEOUS-SOLUTION ; HEXAVALENT CHROMIUM ; RAPID REMOVAL ; METAL-IONS ; CR(VI) ; ADSORPTION ; NANOPARTICLES ; MICROSPHERES ; SEPARATION ; CHITOSAN |
| 收录类别 | SCI |
| 原文出处 | ROYAL SOC CHEMISTRY |
| 语种 | 英语 |
| WOS记录号 | WOS:000370717900071 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/20709]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, 189 Songling Rd, Qingdao 266101, Peoples R China 2.Dalian Polytech Univ, Sch Biol Engn, Dalian 116034, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Xitong,Li, Qian,Yang, Liangrong,et al. Removal of chromium(VI) from wastewater using weakly and strongly basic magnetic adsorbents: adsorption/desorption property and mechanism comparative studies[J]. RSC ADVANCES,2016,6(22):18471-18482. |
| APA | Sun, Xitong,Li, Qian,Yang, Liangrong,&Liu, Huizhou.(2016).Removal of chromium(VI) from wastewater using weakly and strongly basic magnetic adsorbents: adsorption/desorption property and mechanism comparative studies.RSC ADVANCES,6(22),18471-18482. |
| MLA | Sun, Xitong,et al."Removal of chromium(VI) from wastewater using weakly and strongly basic magnetic adsorbents: adsorption/desorption property and mechanism comparative studies".RSC ADVANCES 6.22(2016):18471-18482. |
入库方式： OAI收割
来源：过程工程研究所
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