Reduction of hexavalent chromium by Pannonibacter phragmitetus LSSE-09 coated with polyethylenimine-functionalized magnetic nanoparticles under alkaline conditions
文献类型：期刊论文
| 作者 | Xu, Lin1,2,3; Yang, Liangrong1,2; Luo, Mingfang3; Liang, Xiangfeng1,2; Wei, Xuetuan1,2,3; Zhao, Junmei1,2; Liu, Huizhou1,2 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2011-05-30 |
| 卷号 | 189期号:3页码:787-793 |
| 关键词 | Cr (VI) reduction Fe3O4 nanoparticles Polyethyleneimine Superparamagnetic Electrostatic attraction |
| ISSN号 | 0304-3894 |
| 通讯作者 | Liu, HZ |
| 英文摘要 | A novel cell separation and immobilization method for Cr (VI)-reduction under alkaline conditions was developed by using superparamagnetic Fe3O4 nanoparticles (NPs). The Fe3O4 NPs were synthesized by coprecipitation followed by modification with sodium citrate and polyethyleneimine (PEI). The surface-modified NPs were monodispersed and the particle size was about 15 nm with a saturation magnetization of 62.3 emu/g and an isoelectric point (pl) of 11.5 at room temperature. PEI-modified Fe3O4 NPs possess positive zeta potential at pH below 11.5. presumable because of the high density of amine groups in the long chains of PEI molecules on the surface. At initial pH 9.0, Pannonibacter phragmitetus LSSE-09 cells were immobilized by PEI-modified NPs via electrostatic attraction and then separated with an external magnetic field. Compared to free cells, the coated cells not only had the same Cr (VI)-reduction activity but could also be easily separated from reaction mixtures by magnetic force. In addition, the magnetically immobilized cells retained high specific Cr (VI)-reduction activity over six batch cycles. he results suggest that the magnetic cell separation technology has potential application for Cr (VI) detoxification in alkaline wastewater. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology |
| 关键词[WOS] | CHROMATE REDUCTION ; ESCHERICHIA-COLI ; MICROBIAL-CELLS ; HEAVY-METALS ; DELIVERY ; REMOVAL ; BIOMASS ; CR(VI) ; GENE ; POLY(ETHYLENIMINE) |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291912200021 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4889]  |
| 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, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Natl Key Lab Biochem Engn, 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 | Xu, Lin,Yang, Liangrong,Luo, Mingfang,et al. Reduction of hexavalent chromium by Pannonibacter phragmitetus LSSE-09 coated with polyethylenimine-functionalized magnetic nanoparticles under alkaline conditions[J]. JOURNAL OF HAZARDOUS MATERIALS,2011,189(3):787-793. |
| APA | Xu, Lin.,Yang, Liangrong.,Luo, Mingfang.,Liang, Xiangfeng.,Wei, Xuetuan.,...&Liu, Huizhou.(2011).Reduction of hexavalent chromium by Pannonibacter phragmitetus LSSE-09 coated with polyethylenimine-functionalized magnetic nanoparticles under alkaline conditions.JOURNAL OF HAZARDOUS MATERIALS,189(3),787-793. |
| MLA | Xu, Lin,et al."Reduction of hexavalent chromium by Pannonibacter phragmitetus LSSE-09 coated with polyethylenimine-functionalized magnetic nanoparticles under alkaline conditions".JOURNAL OF HAZARDOUS MATERIALS 189.3(2011):787-793. |
入库方式： OAI收割
来源：过程工程研究所
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