Manipulation of Particle Size and Sorption Capability of Nano-Scale Magnetite via Controlling Surface Coating
文献类型：期刊论文
| 作者 | Zhou, Qin
|
| 刊名 | SCIENCE OF ADVANCED MATERIALS
 |
| 出版日期 | 2014 |
| 卷号 | 6期号:3页码:441-447 |
| 关键词 | Nano-Scale Magnetite Particle Size Stabilizer Phosphate Sorption In-Situ Remediation |
| ISSN号 | 1947-2935 |
| 中文摘要 | Non-point source nutrient release from land to water, which leads to the eutrophication and toxic algal blooms in natural water, is not easy to control effectively because in-situ injection of suspended particles is often failed to reach deep soils due to nanoparticles tending to agglomerate into micro particles. In this work, we found that particle sizes of synthetic magnetite nanoparticles (Fe3O4) and sorption capacity of phosphate were controllable by manipulating the surface coverage of stabilizer (starch). The sorption density and starch stabilized particle sizes were positive correlation. In order to enhance the stability and dispersibility of the nanoparticles, the particle sizes were reduced to nano-scale with high dosage of starch, which weakened the phosphate sorption capability. To recover the activity of the nanoparticles, alpha-amylase was employed to degrade the surface coating. The phosphate sorption capacity was almost doubled when alpha-amylase was applied comparing with that without alpha-amylase. Column testes indicated that highly stabilized nanoparticles could be delivered to the targeted depth of soil column, and the sorption activity was recovered by the in-situ biodegradation of starch. The technology provides methods for in situ immobilization of phosphorus in over fertilized soils, which is significant in controlling the eutrophication of aquatic environments. |
| WOS记录号 | WOS:000332038300004 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9566]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhou, Qin. Manipulation of Particle Size and Sorption Capability of Nano-Scale Magnetite via Controlling Surface Coating[J]. SCIENCE OF ADVANCED MATERIALS,2014,6(3):441-447. |
| APA | Zhou, Qin.(2014).Manipulation of Particle Size and Sorption Capability of Nano-Scale Magnetite via Controlling Surface Coating.SCIENCE OF ADVANCED MATERIALS,6(3),441-447. |
| MLA | Zhou, Qin."Manipulation of Particle Size and Sorption Capability of Nano-Scale Magnetite via Controlling Surface Coating".SCIENCE OF ADVANCED MATERIALS 6.3(2014):441-447. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。