Synthesis of polyethylenimine-functionalized poly(glycidyl methacrylate) magnetic microspheres and their excellent Cr(VI) ion removal properties
文献类型：期刊论文
| 作者 | Sun, Xitong1,2; Yang, Liangrong1; Xing, Huifang1 ; Zhao, Junmei1; Li, Xiaopei1,2; Huang, Yinbin1,2; Liu, Huizhou1
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
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| 出版日期 | 2013-12-01 |
| 卷号 | 234期号:0页码:338-345 |
| 关键词 | PGMA Polyethylenimine Cr(VI) Adsorption Equilibrium |
| 英文摘要 | Micron-sized polyethylenimine-functionalized poly(glycidyl methacrylate) superparamagnetic microspheres (m-PGMA-PEI) were prepared by a process involving: (1) synthesis of PGMA microspheres using the dispersion polymerization method; (2) ring-opening reaction of epoxy groups on PGMA microspheres with ethylenediamine (EDA) to yield amino groups; (3) in situ coprecipitation of Fe3O4 nanoparticles into the pores of microspheres; (4) Michael addition of amino groups with methyl acrylate (MA) to yield ester groups; and (5) amidation of the terminal ester groups with polyethylenimine (PEI). Once generated, the resulting m-PGMA-PEI microspheres were tested for their ability to remove Cr(VI) from an aqueous solution in batch experiments. The results demonstrated that Cr(VI) adsorption was significantly pH dependent. The optimized pH value was 2.0. The adsorption isotherm of the adsorbent fit the Langmuir model, with the maximum adsorption capacity of 492.61 mg/g. The Cr(VI) adsorption rate was rapid, and the adsorption reached equilibrium within 15 min. The thermodynamic parameters (Delta G(0), Delta H-0, Delta S-0) demonstrated that the adsorption process was endothermic and spontaneous in nature. The presence of the coexisting anions involving Cl-, NO3-, H2PO4- and HPO42- had no remarkable influence on Cr(VI) adsorption except SO42-. The regeneration study proved that the m-PGMA-PEI microspheres could be repeatedly utilized with no significant loss of adsorption efficiency. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Environmental ; Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | HEXAVALENT CHROMIUM ; AQUEOUS-SOLUTION ; WASTE-WATER ; COMPOSITE MICROSPHERES ; ADSORPTION ; NANOPARTICLES ; ADSORBENTS ; BEADS ; INDUSTRIAL ; PARTICLES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000328588300040 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13651]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100149, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Xitong,Yang, Liangrong,Xing, Huifang,et al. Synthesis of polyethylenimine-functionalized poly(glycidyl methacrylate) magnetic microspheres and their excellent Cr(VI) ion removal properties[J]. CHEMICAL ENGINEERING JOURNAL,2013,234(0):338-345. |
| APA | Sun, Xitong.,Yang, Liangrong.,Xing, Huifang.,Zhao, Junmei.,Li, Xiaopei.,...&Liu, Huizhou.(2013).Synthesis of polyethylenimine-functionalized poly(glycidyl methacrylate) magnetic microspheres and their excellent Cr(VI) ion removal properties.CHEMICAL ENGINEERING JOURNAL,234(0),338-345. |
| MLA | Sun, Xitong,et al."Synthesis of polyethylenimine-functionalized poly(glycidyl methacrylate) magnetic microspheres and their excellent Cr(VI) ion removal properties".CHEMICAL ENGINEERING JOURNAL 234.0(2013):338-345. |
入库方式： OAI收割
来源：过程工程研究所
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