Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023286 |
Model-Based Analysis of the Effects of Dam-Induced River Water and Groundwater Interactions on Hydro-Biogeochemical Transformation of Redox Sensitive Contaminants in a Hyporheic Zone | |
Yang, Chen1,2; Zhang, You-Kuan2; Liu, Yuanyuan3; Yang, Xiaofan4; Liu, Chongxuan2 | |
2018-09-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:9页码:5973-5985 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Biogeochemical processes in the hyporheic zone (HZ) may retard the contaminants migration from groundwater to the river and vice versa. Anthropogenic activities may further complicate such processes. This study investigated the effects of dam-induced hydrodynamics on biogeochemical transformation of contaminants using Cr as an example in the HZ of the Columbia River at the U.S. Department of Energy's Hanford Site. The flow velocities in the HZ were first simulated using the measured or averaged groundwater level and river stage at hourly, daily, weekly, and monthly time scales. The flow velocities were then incorporated into a reactive transport model with independently characterized biogeochemical reactions and kinetics. Simulation results indicated that hydrodynamics can significantly influence the rate and extent of Cr (VI) biogeochemical transformation, which was mainly controlled by the kinetic reduction of Cr (VI) to sparely soluble Cr (III) by sediment-associated Fe (II) that can be regenerated by microorganisms with organic carbon as electron donor. The frequent flow direction reversals in the HZ induced by dam operations enhanced the rate of microbial consumption of bioavailable OC, which, if there was no organic carbon supply, can eventually terminate the Fe (II) regeneration mechanism and exhaust the HZ's redox capacity in reducing Cr (VI) to Cr (III). This study demonstrated the importance of hydrodynamics on biogeochemical transformation of contaminants in the HZ and of the time scales used in assessing the reactive transport of chemicals and contaminants in the HZ as the net supply of redox sensitive chemicals such as dissolved oxygen into the HZ is a function of the frequency of flow direction reversal. |
英文关键词 | anthropogenic activities river water and groundwater interactions reactive transport coupled hydrology and biogeochemistry retardation capacity hyporheic zone |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000448088100008 |
WOS关键词 | FLOW ; EXCHANGE ; ECOLOGY ; STREAM ; ATTENUATION ; STAGE |
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/21602 |
专题 | 资源环境科学 |
作者单位 | 1.China Univ Geosci, Sch Environm Studies, Wuhan, Hubei, Peoples R China; 2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Prov Key Lab Soil & Groundwater Pollut Control, Shenzhen, Peoples R China; 3.Nanjing Univ, Sch Earth Sci & Engn, Nanjing, Jiangsu, Peoples R China; 4.Beijing Normal Univ, Fac Geog Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Chen,Zhang, You-Kuan,Liu, Yuanyuan,et al. Model-Based Analysis of the Effects of Dam-Induced River Water and Groundwater Interactions on Hydro-Biogeochemical Transformation of Redox Sensitive Contaminants in a Hyporheic Zone[J]. WATER RESOURCES RESEARCH,2018,54(9):5973-5985. |
APA | Yang, Chen,Zhang, You-Kuan,Liu, Yuanyuan,Yang, Xiaofan,&Liu, Chongxuan.(2018).Model-Based Analysis of the Effects of Dam-Induced River Water and Groundwater Interactions on Hydro-Biogeochemical Transformation of Redox Sensitive Contaminants in a Hyporheic Zone.WATER RESOURCES RESEARCH,54(9),5973-5985. |
MLA | Yang, Chen,et al."Model-Based Analysis of the Effects of Dam-Induced River Water and Groundwater Interactions on Hydro-Biogeochemical Transformation of Redox Sensitive Contaminants in a Hyporheic Zone".WATER RESOURCES RESEARCH 54.9(2018):5973-5985. |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论