Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution
文献类型：期刊论文
| 作者 | Sun, Xitong1; Li, Qian2; Yang, Liangrong3; Liu, Huizhou1,3 |
| 刊名 | PARTICUOLOGY
 |
| 出版日期 | 2016-06-01 |
| 卷号 | 26期号:JUN页码:79-86 |
| 关键词 | Chitosan Quaternary ammonium Magnetic Adsorption Cr(Vl) |
| ISSN号 | 1674-2001 |
| 英文摘要 | A bioadsorbent composed of magnetic silica nanoparticles encapsulated by chitosan microspheres was prepared by the emulsion cross-linking method, and it was then modified with quaternary ammonium groups by reaction with ethylenediamine and glycidyl trimethylammonium chloride. Characterization of the bioadsorbent indicated that it was highly acid resistant and magnetically responsive. The bioadsorbent was then used to remove Cr(VI) from acidic aqueous solution. The results of batch experiments indicated that the optimal pH value was 2.5, and the adsorbent exhibited low pH dependence. The maximum adsorption capacity was 233.1 mg/g at pH 2.5 and 25 degrees C, and the equilibrium time was determined to be 40-120 min depending on the initial Cr(VI) concentration. The adsorbent could be effectively regenerated using a mixture of 0.3 mol/L NaOH and 0.3 mol/L NaCl with a desorption efficiency of 95.6%, indicating high reusability. In conclusion, the bioadsorbent shows potential for Cr(Vl) removal from acidic wastewater. (C) 2016 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Engineering ; Materials Science |
| 关键词[WOS] | HEAVY-METAL IONS ; HIGH-CAPACITY ADSORPTION ; HEXAVALENT CHROMIUM ; ADSORBENT ; NANOPARTICLES ; KINETICS ; CARBON ; BEADS ; DYE ; THERMODYNAMICS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000375502100009 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21033]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, 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. Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution[J]. PARTICUOLOGY,2016,26(JUN):79-86. |
| APA | Sun, Xitong,Li, Qian,Yang, Liangrong,&Liu, Huizhou.(2016).Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution.PARTICUOLOGY,26(JUN),79-86. |
| MLA | Sun, Xitong,et al."Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution".PARTICUOLOGY 26.JUN(2016):79-86. |
入库方式： OAI收割
来源：过程工程研究所
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