Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity
文献类型：期刊论文
| 作者 | Sun, Xitong1,2,3; Yang, Liangrong2; Dong, Tingting2,3; Liu, Zhini2,4; Liu, Huizhou1,2 |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2016-03-10 |
| 卷号 | 133期号:10页码:43078 |
| 关键词 | applications adsorption biomaterials emulsion polymerization magnetism and magnetic properties |
| ISSN号 | 0021-8995 |
| 英文摘要 | A novel, bioadsorbent material of polyethylenimine-modified magnetic chitosan microspheres enwrapping magnetic silica nanoparticles (Fe3O4-SiO2-CTS-PEI) was prepared under relatively mild conditions. The characterization results indicated that the adsorbent exhibited high acid resistance and magnetic responsiveness. The Fe3O4 loss of the adsorbent was measured as 0.09% after immersion in pH 2.0 water for 24 h, and the saturated magnetization was 11.7 emu/g. The introduction of PEI obviously improved the adsorption capacity of Cr(VI) onto the adsorbent by approximately 2.5 times. The adsorption isotherms and kinetics preferably fit the Langmuir model and the pseudo-second-order model. The maximum adsorption capacity was determined as 236.4 mg/g at 25 degrees C, which was much improved compared to other magnetic chitosan materials, and the equilibrium was reached within 60 to 120 min. The obtained thermodynamic parameters revealed the spontaneous and endothermic nature of the adsorption process. Furthermore, the Cr(VI)-adsorbed adsorbent could be effectively regenerated using a 0.1 mol/L NaOH solution, and the adsorbent showed a good reusability. Due to the properties of good acid resistance, strong magnetic responsiveness, high adsorption capacity, and relatively rapid adsorption rate, the Fe3O4-SiO2-CTS-PEI microspheres have a potential use in Cr(VI) removal from acidic wastewater. (C) 2015 Wiley Periodicals, Inc. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Polymer Science |
| 研究领域[WOS] | Polymer Science |
| 关键词[WOS] | HEXAVALENT CHROMIUM REMOVAL ; IRON-OXIDE NANOPARTICLES ; HEAVY-METALS REMOVAL ; RAPID REMOVAL ; WASTE-WATER ; GAMMA-FE2O3 NANOPARTICLES ; CHITOSAN BEADS ; IONS ; ADSORBENT ; COMPOSITE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000367852900017 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/20256]  |
| 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.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Xiangtan Univ, Coll Chem Engn, Xiangtan 411105, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Xitong,Yang, Liangrong,Dong, Tingting,et al. Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2016,133(10):43078. |
| APA | Sun, Xitong,Yang, Liangrong,Dong, Tingting,Liu, Zhini,&Liu, Huizhou.(2016).Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity.JOURNAL OF APPLIED POLYMER SCIENCE,133(10),43078. |
| MLA | Sun, Xitong,et al."Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity".JOURNAL OF APPLIED POLYMER SCIENCE 133.10(2016):43078. |
入库方式： OAI收割
来源：过程工程研究所
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