The advantages of clay mineral modification methods for enhancing adsorption efficiency in wastewater treatment: a review

S Barakan, V Aghazadeh - Environmental Science and Pollution …, 2021 - Springer
This review discusses the recent trends in the research over the last 30 years to use clay
minerals in natural and modified forms for removing different toxic organic/inorganic …

[HTML][HTML] Review of pore network modelling of porous media: Experimental characterisations, network constructions and applications to reactive transport

Q Xiong, TG Baychev, AP Jivkov - Journal of contaminant hydrology, 2016 - Elsevier
Pore network models have been applied widely for simulating a variety of different physical
and chemical processes, including phase exchange, non-Newtonian displacement, non …

Multicomponent diffusion modeling in clay systems with application to the diffusion of tritium, iodide, and sodium in opalinus clay

CAJ Appelo, P Wersin - Environmental science & technology, 2007 - ACS Publications
The hydrogeochemical transport model PHREEQC was extended with options to calculate
multicomponent diffusion in free pores and in the diffuse double layer (DDL). Each solute …

Porosity investigation of compacted bentonite using XRD profile modeling

M Holmboe, S Wold, M Jonsson - Journal of Contaminant Hydrology, 2012 - Elsevier
Many countries intend to use compacted bentonite as a barrier in their deep geological
repositories for nuclear waste. In order to describe and predict hydraulic conductivity or …

Fickian diffusion of radionuclides for engineered containment barriers: Diffusion coefficients, porosities, and complicating issues

CD Shackelford, SM Moore - Engineering Geology, 2013 - Elsevier
A review of the literature was undertaken primarily with the goal of discerning the types of
diffusion coefficients that have been reported with respect to diffusion of radionuclides …

Modelling approaches for anion-exclusion in compacted Na-bentonite

C Tournassat, CAJ Appelo - Geochimica et Cosmochimica Acta, 2011 - Elsevier
The accessible porosity for Cl− in bentonite is smaller than the the total porosity due to anion
repulsion (exclusion) by the surface of montmorillonite, the main mineral in bentonite. The …

Diffusion and sorption of Cs+, Na+, I− and HTO in compacted sodium montmorillonite as a function of porewater salinity: Integrated sorption and diffusion model

Y Tachi, K Yotsuji - Geochimica et Cosmochimica Acta, 2014 - Elsevier
Montmorillonite clay is an important component of barrier materials such as bentonites and
argillaceous rocks for the safe geological disposal of radioactive waste. The diffusion and …

Diffusion-driven transport in clayrock formations

S Altmann, C Tournassat, F Goutelard, JC Parneix… - Applied …, 2012 - Elsevier
Clay mineral-rich sedimentary formations are currently under investigation to evaluate their
potential use as host formations for installation of deep underground disposal facilities for …

Ion equilibrium between montmorillonite interlayer space and an external solution—consequences for diffusional transport

M Birgersson, O Karnland - Geochimica et Cosmochimica Acta, 2009 - Elsevier
Bentonite clay is proposed as buffer material in several concepts of High Level Radioactive
Waste repositories, and a correct description of ion diffusion in this material is of vital …

Diffusion of 22Na and 85Sr in Montmorillonite:  Evidence of Interlayer Diffusion Being the Dominant Pathway at High Compaction

MA Glaus, B Baeyens, MH Bradbury… - … science & technology, 2007 - ACS Publications
A mechanistic understanding of transport phenomena in compacted clays is essential for the
use of such materials as engineered barrier systems for the safe geological disposal of …