Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024486 |
Seasonal Dynamics of Organic Matter Composition and Its Effects on Suspended Sediment Flocculation in River Water | |
Lee, B. J.1; Kim, J.1; Hur, J.2; Choi, I. H.3; Toorman, E. A.4; Fettweis, M.5; Choi, J. W.1 | |
2019-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:8页码:6968-6985 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; Belgium |
英文摘要 | Organic matter (OM) and suspended sediment are abundant, and interact with each other, in rivers and lakes. OM is usually adsorbed by suspended sediment and causes either particle stabilization or flocculation. In this study, the OM composition and suspended sediment flocculation potential of river water were regularly measured throughout the year 2016. The OM composition of the river water samples was measured with a liquid chromatography-organic carbon detection system and fluorescence excitation-emission matrix spectroscopy, and the flocculation potential was measured in a standard jar test experiment. Results from the OM analyses and flocculation potential tests, in association with a multivariate data analysis, demonstrated that the OM composition and flocculation potential of the river water were dynamic under different meteorological, hydrological, ecological, and anthropogenic conditions and closely correlated with each other. Dry seasons with low rainfall and water discharge induced a lacustrine condition and led to the OM composition being more aquagenic and flocculation-favorable. The most favorable condition for the enhancement of flocculation was during algae bloom and associated with the production of biopolymers from algae. In contrast, rainy seasons were advantageous for stabilization of suspended sediment because of excessive transport of terrigenous humic substances from catchment areas into the river. Such terrigenous humic substances enhanced stabilization by creating enhanced electrostatic repulsion via adsorption onto the sediment surface. Findings from this research provide a better insight into the highly complex behaviors of and interactions between OM and suspended sediment in natural water environments. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490973700035 |
WOS关键词 | EXCITATION-EMISSION MATRIX ; FLUORESCENCE EEM-PARAFAC ; SETTLING VELOCITY ; PARTICLE-SIZE ; RESTORATION PROJECT ; DRINKING-WATER ; CARBON ; MARINE ; SPECTROSCOPY ; COAGULATION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185875 |
专题 | 资源环境科学 |
作者单位 | 1.Kyungpook Natl Univ, Dept Disaster Prevent & Environm Engn, Sangju, South Korea; 2.Sejong Univ, Dept Environm & Energy, Seoul, South Korea; 3.K Water, Water Anal & Res Ctr, Daejeon, South Korea; 4.Katholieke Univ Leuven, Dept Civil Engn, Hydraul Lab, Leuven, Belgium; 5.Royal Belgian Inst Nat Sci, Operat Directorate Nat Environm, Brussels, Belgium |
推荐引用方式 GB/T 7714 | Lee, B. J.,Kim, J.,Hur, J.,et al. Seasonal Dynamics of Organic Matter Composition and Its Effects on Suspended Sediment Flocculation in River Water[J]. WATER RESOURCES RESEARCH,2019,55(8):6968-6985. |
APA | Lee, B. J..,Kim, J..,Hur, J..,Choi, I. H..,Toorman, E. A..,...&Choi, J. W..(2019).Seasonal Dynamics of Organic Matter Composition and Its Effects on Suspended Sediment Flocculation in River Water.WATER RESOURCES RESEARCH,55(8),6968-6985. |
MLA | Lee, B. J.,et al."Seasonal Dynamics of Organic Matter Composition and Its Effects on Suspended Sediment Flocculation in River Water".WATER RESOURCES RESEARCH 55.8(2019):6968-6985. |
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