Zhang RC; Zhang HB
; Tu C; Luo YM发表期刊Chemosphere
ISSN0045-6535
2019
卷号237页码:124529
关键词Dissolved organic matter (DOM)Titanium dioxide nanoparticles (TiO2 NPs)TransportMolecular weightSUVAConcurrent ions
研究领域Environmental Sciences
DOI10.1016/j.chemosphere.2019.124529
产权排序3
通讯作者Luo, Yongming(ymluo@issas.ac.cn)
作者部门海岸带环境过程实验室
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.
文章类型Article
资助机构National Natural Science Foundation of China
收录类别SCI
语种英语
关键词[WOS]TIO2 RUTILE NANOPARTICLES; WALLED CARBON NANOTUBES; OXIDE NANOPARTICLES; ENVIRONMENTAL FATE; HUMIC SUBSTANCES; IONIC-STRENGTH; FULVIC-ACIDS; AGGREGATION; WATER; ADSORPTION
研究领域[WOS]Environmental Sciences
WOS记录号WOS:000496896700022
引用统计被引频次：5[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24150
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
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 7714Zhang 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.
APAZhang 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.
MLAZhang 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.
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