Differences in the dynamic behavior of Cd2+ on different clay mineral (001) surfaces under the effect of electric field
Source abstract
Abstract
Clay minerals, as filling materials for permeable reactive barriers, can be used for electrokinetic remediation of heavy metal-contaminated soils. In this study, molecular dynamics simulations were used to investigate the differences in the dynamic characteristics of heavy metal ions Cd 2+ on the crystal surfaces of three clay minerals (001) under the action of an electric field. The micro-interaction mechanism between Cd 2+ and clay minerals was revealed. The electric field changed the migration rate, hydration structure, and adsorption site distribution of Cd 2+ , which was favorable for soil remediation. Cd 2+ is more inclined to interact with the montmorillonite surface under the action of the electric field. There is a correlation between the diffusion coefficient of Cd 2+ and the coordination number of its hydrated shell layer. With the application of the electric field, the hydration capacity of Cd 2+ was weakened, resulting in a decrease in its diffusion rate.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions · Electrokinetic Soil Remediation Techniques · Geophysical and Geoelectrical Methods
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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