Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021WR030442 |
Water-mineral reactions in a translated single realistic fracture: consequences for contaminant uptake by matrix diffusion | |
Paolo Trinchero; Aitor Iraola; Patrick Bruines; Bjö; rn Gylling | |
2021-10-07 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | We use a realistic fracture along with pore-scale reactive transport simulations to investigate the impact of fracture filling minerals and water-mineral reactions on in-plane groundwater flow patterns and on contaminant uptake by matrix diffusion. The results of the simulations show that sparsely distributed fracture filling calcite patches provide a significant buffering capacity against the infiltration of acidic water. The advance of the geochemical perturbation is characterised by channeling, which is partly smeared out when low Peclet numbers are used. Mineral patches have a significant impact on groundwater flow patterns as shown by the computed distributions of groundwater travel time, which are characterised by long tails. The ability of the fracture to retain contaminants by uptake due to matrix diffusion is investigated by means of two metrics: the Eulerian quantity denoted as F-factor and the Lagrangian variable known as transport resistance. F-factor is shown to provide an average single estimate of the bulk retention capacity of the fracture whereas transport resistance is characterised by a distribution, whose very long tail is related to streamlines forced to travel through very narrow throats. A reduction of up to 70% in the mean travel time and 85% in the mean transport resistance is observed as a consequence of geochemical dissolution reactions, which also lead to an overall reduction of their variability. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
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/339797 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Paolo Trinchero,Aitor Iraola,Patrick Bruines,et al. Water-mineral reactions in a translated single realistic fracture: consequences for contaminant uptake by matrix diffusion[J]. Water Resources Research,2021. |
APA | Paolo Trinchero,Aitor Iraola,Patrick Bruines,Bjö,&rn Gylling.(2021).Water-mineral reactions in a translated single realistic fracture: consequences for contaminant uptake by matrix diffusion.Water Resources Research. |
MLA | Paolo Trinchero,et al."Water-mineral reactions in a translated single realistic fracture: consequences for contaminant uptake by matrix diffusion".Water Resources Research (2021). |
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