Enhanced transport of ferrihydrite colloid by chain-shaped humic acid colloid in saturated porous media
文献类型：期刊论文
| 作者 | Ma, Jie1,2,3,4,5; Guo, Huaming2,3; Lei, Mei4; Li, Yongtao1,5; Weng, Liping5; Chen, Yali5; Ma, Yuling5; Deng, Yingxuan5; Feng, Xiaojuan4; Xiu, Wei2,3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018-04-15 |
| 卷号 | 621页码:1581-1590 |
| 关键词 | Ferrihydrite colloid Humic acid colloid Morphology XDLVO Transport |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2017.10.070 |
| 通讯作者 | Guo, Huaming(hmguo@cugb.edu.cn) |
| 英文摘要 | Both humic acid and colloid particle size effectively regulate colloid transport. However, little is known about effect of particle size and configuration of humic acid colloid (HA(colloid)) on enhanced-transport of ferrihydrite colloid (FHcolloid) in porous media. Co-transport of HA(colloid) and FHcolloid at different pH was systematically investigated by monitoring breakthrough curves (BTCs) in saturated sand columns. The colloid transport model and the (X)DLVO theory were used to reveal the mechanism of HA(colloid)-enhanced FHcolloid transport in the columns. Results showed that HA(colloid) enhanced FHcolloid transport in neutral and alkaline conditions. In neutral conditions, small HA(colloid) (F-HA(colloid)) with chain-shaped structure enhanced FHcolloid transport more prominently than pristine granular HA(colloid). The chain-shaped F-HA(colloid) caused osmotic repulsion and elastic-steric repulsion between colloids and sand, leading to enhanced transport. However, the granular HA(colloid) readily occurred as deposition due to attachment and straining, which decreased the enhanced transport of FHcolloid. In alkaline conditions, both HA(colloid) and F-HA(colloid) were chain-shaped, with longer chains of HA(colloid) than F-HA(colloid). Ferrihydrite colloid transport was enhanced by HA(colloid) more significantly than F-HA(colloid) due to stronger repulsion between mixed HA(colloid)-FHcolloid and sand. It suggested that regulation of particle size and morphology of HA(colloid) would enhance FHcolloid transport and further help in understanding FHcolloid-facilitated contaminants transport in porous media. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | OXIDE NANOPARTICLES ; IONIC-STRENGTH ; SAND COLUMNS ; QUARTZ SAND ; FLOW-RATE ; GRAPHENE OXIDE ; ORGANIC-MATTER ; PARTICLE-SIZE ; DEPOSITION ; WATER |
| 资助项目 | National Key Research and Development Program of China[2016YFD0800304] ; National Natural Science Foundation of China[41222020] ; National Natural Science Foundation of China[41172224] ; National Natural Science Foundation of China[U1401234] ; China Postdoctoral Science Foundation[2017M610532] ; Fundamental Research Funds for the Central Universities[2652013028] ; Fok Ying-Tung Education Foundation, China[131017] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000424196800155 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Fundamental Research Funds for the Central Universities ; Fok Ying-Tung Education Foundation, China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/57130]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Guo, Huaming |
| 作者单位 | 1.South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Guangdong, Peoples R China 2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China 3.China Univ Geosci, Sch Water Resources & Environm, Beijing 100083, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 5.Minist Agr, Agroenvironm Protect Inst, Tianjin 300191, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Jie,Guo, Huaming,Lei, Mei,et al. Enhanced transport of ferrihydrite colloid by chain-shaped humic acid colloid in saturated porous media[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,621:1581-1590. |
| APA | Ma, Jie.,Guo, Huaming.,Lei, Mei.,Li, Yongtao.,Weng, Liping.,...&Xiu, Wei.(2018).Enhanced transport of ferrihydrite colloid by chain-shaped humic acid colloid in saturated porous media.SCIENCE OF THE TOTAL ENVIRONMENT,621,1581-1590. |
| MLA | Ma, Jie,et al."Enhanced transport of ferrihydrite colloid by chain-shaped humic acid colloid in saturated porous media".SCIENCE OF THE TOTAL ENVIRONMENT 621(2018):1581-1590. |
入库方式： OAI收割
来源：地理科学与资源研究所
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