A new method for assessment of electro-osmotic permeability through the integration of theoretical and experimental ion flux in electrokinetic processes

Y, Zhang; Chen, Meng; Wang, Jinguo; Deng, Yangbo; Li, Zhaofeng

doi:10.1016/j.jhazmat.2023.132049

Cited by 1 publication

(1 citation statement)

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“…Then, theoretical models were established to calculate the electroosmotic permeability. Cr 6+ was selected as the pollutant in soil for its nonreactive and stable characteristics [33]. The objectives of this research were to (1) establish ion hydration and ion hydration-friction models based on the theories of ion hydration and ion friction.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Electroosmotic Permeability Using Different Models and Investigation of Its Effect on Chromium Removal

Liu,

Zhuang

2023

Sustainability

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Electroosmotic permeability is an important parameter in the electrokinetic remediation (EKR) of heavy-metal-contaminated soil. This study focuses on the applicability of electroosmotic permeability models and the relationship between electroosmotic permeability and heavy metal removal efficiency. The electroosmotic permeability models of ion hydration and the ion hydration–friction model were developed and investigated. Moreover, 11 EKR experiments were conducted in the laboratory to remediate Cr6+-contaminated soil. The results showed that the electroosmotic permeability calculated by the H-S model was 3–7 times larger than the measured value, and it was 65–90% of the measured value as calculated by the ion hydration model. However, the ion hydration–friction model, which combined the ion hydration and Spiegler friction theories, predicted the electroosmotic permeability more accurately compared to the H-S and ion hydration models. In addition, the parameters in the ion hydration–friction model were determined easily, meaning that the ion hydration–friction model is of good applicability. The experimental results showed that the soil properties changed and the electroosmotic flow rate decreased when acid was added to the soil, and the Cr6+ removal efficiency improved.

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Section: Introductionmentioning

confidence: 99%