Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094306 |
Positive Zeta Potential in Sandstones Saturated with Natural Saline Brine | |
Mutlaq Alarouj; Harry Collini; Matthew D. Jackson | |
2021-10-16 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | It is widely accepted that the zeta potential in natural sandstones is negative in the brine pH and compositions found in the subsurface. The zeta potential is a measure of the electrical potential at a mineral surface. We report new measurements of the zeta potential using a saline natural brine rich in divalent ions. The sandstones samples were quartz-dominated but some also contained dolomite, siderite and clay minerals. The quartz-dominated sandstones showed behaviour consistent with earlier studies, but the dolomite- and siderite-bearing samples returned positive zeta potentials. We suggest that this is caused by a positive zeta potential on dolomite and siderite mineral surfaces, adsorption of divalent ions onto quartz mineral surfaces and/or ion exchange with clay minerals. The results have broad implications for the zeta potential of natural sandstones, because the magnitude and polarity of the zeta potential impact geophysical monitoring and the transport of the charged contaminants. |
领域 | 气候变化 |
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/340030 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Mutlaq Alarouj,Harry Collini,Matthew D. Jackson. Positive Zeta Potential in Sandstones Saturated with Natural Saline Brine[J]. Geophysical Research Letters,2021. |
APA | Mutlaq Alarouj,Harry Collini,&Matthew D. Jackson.(2021).Positive Zeta Potential in Sandstones Saturated with Natural Saline Brine.Geophysical Research Letters. |
MLA | Mutlaq Alarouj,et al."Positive Zeta Potential in Sandstones Saturated with Natural Saline Brine".Geophysical Research Letters (2021). |
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