I am working on the interaction of dissolved organic matter with bentonite. I analyzed d-spacing from high-resolution TEM images. I found that the d-spacing of bentonite was decreased after the adsorption. Is it practically possible? should it not be increased? and why? Thank you.
An explanation can probably be found in the dehydration of bentonite (ie montmorillonite) in a vacuum in TEM.
Please take XRD data on Ca-saturated and Ca-saturated and glycolated samples as X-ray diffractions provide a better measure of interlayer expansion of 2:1 clay minerals.
https://www.sciencedirect.com/science/article/abs/pii/S0166248108705671,kindly check this link.
Addition of clay to soils led to increased OC. Therefore, addition of clay to soil may enhance net sequestration of C. Organic carbon close to mineral surfaces or within microaggregates is held most strongly. Carbon sequestration may occur in subsoils with unsaturated mineral surfaces.May 12, 2020
https://link.springer.com › article
CLAY MINERALS AS THE KEY TO THE
https://www.researchgate.net/publication/341336835_CLAY_MINERALS_AS_THE_KEY_TO_THE_SEQUESTRATION_OF_CARBON_IN_SOILS,this link may be helpful.
Clay minerals supply both permanent and changeable surface charges and different specific surface areas that are crucial to determine the carbon protection capacity of soils. They form organic-mineral complexes, promote the total establishment and save soil organic carbon against microbial decomposition [18] ).
https://www.researchgate.net › 3249...
Clay Minerals—Organic Matter Interactions in Relation to Carbon ...
Clay minerals also have the ability to attract water molecules. Because this attraction is a surface phenomenon, it is called adsorption (which is different from absorption because the ions and water are not attracted deep inside the clay grains).
https://www.oakton.edu › user › clays
Introduction to Clay Minerals & Soils
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Clay minerals are excellent as clarifiers, absorption and adsorption materials. They are used in many industrial applications such as paper, paint, petroleum, ceramic, cement, adhesive, asphalt, and food and health-care industry due to their versatility, abundance, and low cost [1, 2].
https://www.intechopen.com › chapt...
Clay Minerals and Clay Mineral Water Dispersions — Properties ...
Definition: Clay minerals are the characteristic minerals of the earths near surface environments. They form in soils and sediments, and by diagenetic and hydrothermal alteration of rocks. Water is essential for clay mineral formation and most clay minerals are described as hydrous alumino silicates.
https://www.claysandminerals.com › ...
Clay Minerals
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