A proper understanding of the mechanical behavior clay minerals is crucial importance in earth sciences, soil mechanics, and geotechnical engineering. Although more than seventy percent all clays are mixed layer types, vast majority previous studies devoted to pure clays, which make hydraulic properties widespread mixed-layer (MLC) its role soils little understood, especially most common illite...

Abstract This study aimed to determine the possible control of selected pathogenic and competitive fungi A. bisporus by three nanosilver clay composites establish effective concentrations for inhibiting pathogens. Nanosilver (AgNPs) (zeolite, montmorillonite, palygorskite) were synthesized a microwave‐assisted surface functionalization technique, various techniques characterized products. Zeoli...

The need to consider CaCl and MgCl complexes in Ca-Mg exchange reactions on montmorillonite was evaluated by examining cation selectivity in various anion backgrounds. The Ca-Mg exchange isotherms on SVVy-1 Wyoming bentonite were determined in 0.0125 M SO4, 0.025, 0.050, and 0.100 M Cl and 0.03 M perchlorate background. Calculated selectivity values for the reaction Ca + MgX^ Mg + CaA" were Kv ...

With the increasing use of organic resource for P fertilization, adsorption and desorption dynamics various phosphorus (OP) forms remain an important gap knowledge to bridge in order improve availability. In this study, we examined OP (myo-inositol hexakisphosphate, myo-IHP; glycerophosphate, GLY; glucose-6-phosphate, G6P) compounds from several soil minerals including Fe Al oxides (goethite gi...

Silica sol, i.e., colloidal SiO2, may be used as a low-pH injection grout for very fine fractures in the construction of deep geological repositories for radioactive waste in Sweden and in Finland. If the bentonite barrier encounters SiO2-colloid particles under conditions favorable for aggregation, there is concern that it will modify the bentonite barrier at the bentonite/bedrock interface. I...

The design of clay plugs used for sealing access galleries to a radioactive waste repository built with concrete structures in a deep clayey formation must take into consideration their chemical evolution over time. Diffusion of an alkaline plume from concrete into bentonite was therefore modeled over a 100,000-year period with the PHREEQC geochemical code in order to determine, as a function o...

This review summarizes our recent findings on the role of mineral salts in prebiotic RNA synthesis, which is catalyzed by montmorillonite clay minerals. The clay minerals not only catalyze the synthesis of RNA but also facilitate homochiral selection. Preliminary data of these findings have been presented at the "Horizontal Gene Transfer and the Last Universal Common Ancestor (LUCA)" conference...

The authors consider the conditions of occurrence, composition, and properties Eocene clays Paleogene, common in northern part Tamdytau, which were foundation structures. present study is aimed at studying problem long-term interaction with water identifying features changes their material composition properties; variability clays, reasons for these are analyzed. main factors determining differ...