Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073999 |
Solute mixing regulates heterogeneity of mineral precipitation in porous media | |
Cil, Mehmet B.1; Xie, Minwei2; Packman, Aaron I.1; Buscarnera, Giuseppe1 | |
2017-07-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | Synchrotron X-ray microtomography was used to track the spatiotemporal evolution of mineral precipitation and the consequent alteration of the pore structure. Column experiments were conducted by injecting CaCl2 and NaHCO3 solutions into granular porous media either as a premixed supersaturated solution (external mixing) or as separate solutions that mixed within the specimen (internal mixing). The two mixing modes produced distinct mineral growth patterns. While internal mixing promoted transverse heterogeneity with precipitation at the mixing zone, external mixing favored relatively homogeneous precipitation along the flow direction. The impact of precipitation on pore water flow and permeability was assessed via 3-D flow simulations, which indicated anisotropic permeability evolution for both mixing modes. Under both mixing modes, precipitation decreased the median pore size and increased the skewness of the pore size distribution. Such similar pore-scale evolution patterns suggest that the clogging of individual pores depends primarily on local supersaturation state and pore geometry. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406257400022 |
WOS关键词 | PORE-SCALE ; CARBONATE DISSOLUTION ; FLOW ; EVOLUTION ; POROSITY ; ROCKS ; MODEL |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27416 |
专题 | 气候变化 |
作者单位 | 1.Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL USA; 2.Hong Kong Univ Sci & Technol, Shenzhen Res Inst, Marine Environm Lab, Shenzhen, Peoples R China |
推荐引用方式 GB/T 7714 | Cil, Mehmet B.,Xie, Minwei,Packman, Aaron I.,et al. Solute mixing regulates heterogeneity of mineral precipitation in porous media[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(13). |
APA | Cil, Mehmet B.,Xie, Minwei,Packman, Aaron I.,&Buscarnera, Giuseppe.(2017).Solute mixing regulates heterogeneity of mineral precipitation in porous media.GEOPHYSICAL RESEARCH LETTERS,44(13). |
MLA | Cil, Mehmet B.,et al."Solute mixing regulates heterogeneity of mineral precipitation in porous media".GEOPHYSICAL RESEARCH LETTERS 44.13(2017). |
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