Korolev V A, Nesterov D S
a Faculty of Geology, Department of Engineering and Ecological Geology , Lomonosov Moscow State University , Moscow , Russia.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2019;54(6):560-571. doi: 10.1080/10934529.2019.1571321. Epub 2019 Feb 7.
The change in properties and structure of clay soils due to electro-osmosis was studied. These alterations were exemplified by mantle loam and kaolin. It is shown that electro-osmotic treatment of the soils on the open scheme resulted in the transformations in their moisture content, total and dry density, salinity, pH, and the parameters of their particles. The most notable changes occurred within the diffuse double layers (DDLs) of soil particles such as their recharge in the anodic zone. The transformations of the loam particles DDLs resulted in their aggregation in the cathodic and anodic zones. Also, electro-osmotic flow caused the redistribution of pore sizes within the soils between the electrodes. In the case of the kaolin, electro-osmosis resulted in the formation of the anisotropic, flow-oriented structure. The change in the types of soil particles contacts formed was observed during electro-osmosis as well. The obtained data can be used to study the behavior of soil during electro-osmosis as a function of the soil type.
研究了电渗作用导致的黏土性质和结构变化。这些变化以地幔壤土和高岭土为例进行说明。结果表明，在开放式方案下对土壤进行电渗处理会导致其含水量、总密度和干密度、盐度、pH值以及颗粒参数发生变化。最显著的变化发生在土壤颗粒的扩散双电层（DDL）内，例如在阳极区它们的电荷再分布。壤土颗粒DDL的转变导致其在阴极区和阳极区聚集。此外，电渗流导致电极之间土壤孔隙大小的重新分布。对于高岭土，电渗作用导致形成各向异性的、流动取向的结构。在电渗过程中也观察到了土壤颗粒接触类型的变化。所获得的数据可用于研究电渗过程中土壤行为与土壤类型的关系。
