Work

Electroosmotic permeability in kaolinite and CaCO3 poultice mixtures

Year: 2024

Type: article

Abstract: Electrokinetic treatment of masonry for desalination or electroosmotic dewatering depends on a poultice, in which the electrodes are placed, which fulfills several purposes. Poultice composed of kaolinite and CaCO 3 have been shown to have good workability and high pH buffering capacity. In this work, the electroosmotic (EO) permeability is studied in different kaolinite - CaCO 3 mixtures. In addition, the effect on EO of using NaCl as a mixing solution is investigated. A special cell is used to test the EO in the specimens. A phenomenological approach, based on the potential gradient and the flux of solution, was used to calculate the EO flow rate and EO permeability coefficient. Results showed that by increasing the concentration of CaCO 3 in the poultice mixture, the EO flow rate decreased and the poultice with 80 % CaCO 3 and more did not have any EO flow. Furthermore, the ionic strength in the mixing solution decreases the EO flow rate.

Source: Journal of Cultural Heritage

DOI: 10.1016/j.culher.2024.05.015

Authors: Naser Eslami, Jorge Feijoo, Juan M. Paz-Garcia, Elisa Franzoni, Lisbeth M. Ottosen

Institutions: Technical University of Denmark, Escuela Naval Militar, Centro Universitario de la Defensa en la Escuela Naval Militar, Universidad de Málaga, University of Bologna

Language: English

Topic: Electrokinetic Soil Remediation Techniques

Subfield: Environmental Engineering

Field: Environmental Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,780

OpenAlex ID: W4399409393

FWCI: 0.843

Cites: 25

Cited by: 8

Related to: 10