The limited facilitating effect of dissolved organic matter extracted from organic wastes on the transport of titanium dioxide nanoparticles in acidic saturated porous media
文献类型：期刊论文
| 作者 | Zhang RC; Zhang HB ; Tu C; Luo YM
|
| 刊名 | Chemosphere
 |
| 出版日期 | 2019 |
| 卷号 | 237页码:124529 |
| 关键词 | Dissolved organic matter (DOM) Titanium dioxide nanoparticles (TiO2 NPs) Transport Molecular weight SUVA Concurrent ions |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2019.124529 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | The complexity of natural dissolved organic matter (DOM) motivates the determination of how DOM from diverse sources affects the environmental behaviors of engineered nanoparticles. Here, three types of DOM, DOM extracted from swine manure (SWDOM), sludge (SLDOM) and sediment (SEDOM), were characterized, and their effects on the transport of titanium dioxide nanoparticles (TiO2 NPs, 30 nm in diameter) were evaluated and compared with those of humic acid (HA). Characterization tests showed differences in the aromaticity and weight-average molecular weight (M-w) properties among the three extracted DOM solutions, and greater distinctions were found between the extracted DOM and HA. All the extracted DOM facilitated TiO2 NPs transport in acidic porous media. Nevertheless, the enhancing effects varied among the different extracted DOM types. SWDOM had a promoting effect on TiO2 NPs mobility that was equivalent to that of SEDOM and much higher than that of SLDOM. However, the facilitating effects of all three extracted DOM types were limited compared to that of HA. Based on the combined analysis of DOM properties and TiO2 NPs transport behaviors, it could be concluded that aromaticity and M-w were the key properties determining the limited promoting effects of DOM on TiO2 NPs mobility, and the specific UV absorbance at 280 nm (normalized by concentration, SUVA(280)) was a facile and useful indicator of the DOM-promoted transport of TiO2 NPs. These findings revealed that transport potential in the presence of DOM would be overestimated if either HA or fulvic acid were chosen as the DOM model in studies. (C) 2019 Elsevier Ltd. All rights reserved. |
| WOS关键词 | TIO2 RUTILE NANOPARTICLES ; WALLED CARBON NANOTUBES ; OXIDE NANOPARTICLES ; ENVIRONMENTAL FATE ; HUMIC SUBSTANCES ; IONIC-STRENGTH ; FULVIC-ACIDS ; AGGREGATION ; WATER ; ADSORPTION |
| WOS研究方向 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000496896700022 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/24150]  |
| 专题 | 烟台海岸带研究所_近岸生态与环境实验室 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Luo YM |
| 推荐引用方式 GB/T 7714 | Zhang RC,Zhang HB,Tu C,et al. The limited facilitating effect of dissolved organic matter extracted from organic wastes on the transport of titanium dioxide nanoparticles in acidic saturated porous media[J]. Chemosphere,2019,237:124529. |
| APA | Zhang RC,Zhang HB,Tu C,&Luo YM.(2019).The limited facilitating effect of dissolved organic matter extracted from organic wastes on the transport of titanium dioxide nanoparticles in acidic saturated porous media.Chemosphere,237,124529. |
| MLA | Zhang RC,et al."The limited facilitating effect of dissolved organic matter extracted from organic wastes on the transport of titanium dioxide nanoparticles in acidic saturated porous media".Chemosphere 237(2019):124529. |
入库方式： OAI收割
来源：烟台海岸带研究所
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。