Inactivation and Magnetic Separation of Bacteria from Liquid Suspensions Using Electrosprayed and Nonelectrosprayed nZVI Particles: Observations and Mechanisms
文献类型：期刊论文
| 作者 | Chen, Qi ; Gao, Min ; Li, Jing ; Shen, Fangxia ; Wu, Yan ; Xu, Zhenqiang ; Yao, Maosheng |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2012 |
| 卷号 | 46期号:4页码:2360－2367 |
| ISSN号 | 0013-936X |
| 中文摘要 | Here, nonelectrosprayed nanoscale zerovalent iron (NE-nZVI), electrosprayed nZVI (E-nZVI) and preoxidized nZVI (o-nZVI) particles were applied to inactivating Bacillus subtilis, Escherichia coli as well as bacteria in various wastewater samples. In addition, magnetic separation was applied to the mixture of 0.2 mL bacterial sample and 1.8 mL E-nZVI or NE-nZVI suspensions. Bacterial concentrations and optical density of the supernatants were analyzed using culturing, optical adsorption and qPCR tests. In general, for wastewater samples the inactivations were shown to range from nog to 3-log. PCR-DGGE analysis indicated that no gene mutation occurred when bacteria were treated with nZVI. Using magnetic separation, significant physical removals, revealed as a function of nZVI type (NE-,E- and O-nZVI) and bacterial concentration, up to 6-log were obtained. E-nZVI and NE-nZVI were shown to react differently with B. subtilis and E. coil, although exhibiting similar inactivation rates, qPCR tests detected higher amount of DNA in the supernatants from mixing E. coil with NE-nZVI, but less for E-nZVI. However, the opposite was observed with B. subtilis. Our data together with optical adsorption analysis suggested that the inactivation and magnetic separation mainly depend on Fe-0/Fe3O4 shell compositions, the type of bacteria (aerobic and anaerobic) and their concentrations. |
| WOS记录号 | WOS:000300465900052 |
| 公开日期 | 2014-11-05 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7936]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 推荐引用方式 GB/T 7714 | Chen, Qi,Gao, Min,Li, Jing,et al. Inactivation and Magnetic Separation of Bacteria from Liquid Suspensions Using Electrosprayed and Nonelectrosprayed nZVI Particles: Observations and Mechanisms[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2012,46(4):2360－2367. |
| APA | Chen, Qi.,Gao, Min.,Li, Jing.,Shen, Fangxia.,Wu, Yan.,...&Yao, Maosheng.(2012).Inactivation and Magnetic Separation of Bacteria from Liquid Suspensions Using Electrosprayed and Nonelectrosprayed nZVI Particles: Observations and Mechanisms.ENVIRONMENTAL SCIENCE & TECHNOLOGY,46(4),2360－2367. |
| MLA | Chen, Qi,et al."Inactivation and Magnetic Separation of Bacteria from Liquid Suspensions Using Electrosprayed and Nonelectrosprayed nZVI Particles: Observations and Mechanisms".ENVIRONMENTAL SCIENCE & TECHNOLOGY 46.4(2012):2360－2367. |
入库方式： OAI收割
来源：生态环境研究中心
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