Clay minerals retain or adsorb metal ions in the Earth's critical zone. Rocks, sediments and
soils rich in clay minerals can concentrate rare earth elements (REEs) in ion adsorption-type …

The radionuclide (RN) migration study is not only helpful to understand environmental
behavior of RNs, but also can establish the basis for the safety assessment of geological …

The charged surfaces of micaceous minerals, especially illite, regulate the mobility of the
major radioisotopes of Cs (134 Cs, 135 Cs, 137 Cs) in the geosphere. Despite the long …

The prediction of U (VI) adsorption onto montmorillonite clay is confounded by the
complexities of:(1) the montmorillonite structure in terms of adsorption sites on basal and …

Insights at the microscopic level of the process of radiocesium adsorption and interaction
with clay mineral particles have improved substantially over the past several years, triggered …

The stability and persistence of organic matter (OM) in source rocks are of great significance
for hydrocarbon generation and the global carbon cycle. Clay-OM associations commonly …

The surface reactivity of clay minerals remains challenging to characterize because of a
duality of adsorption surfaces and mechanisms that does not exist in the case of simple …

High-resolution atomic force microscopy is used to map the surface charge on the basal
planes of kaolinite nanoparticles in an ambient solution of variable pH and NaCl or CaCl2 …

Abstract Changes in the site density and surface acidity constants (ie pKa1 and pKa2) of
kaolinite and montmorillonite were determined after acid or alkali spills, and pH buffering …

Montmorillonite layer edge surfaces have pH-dependent properties, which arises from the
acid–base reactivity of their surface functional groups. Edge surface acidity (with intrinsic …