УЛУЧШЕНИЕ РАЗДЕЛИТЕЛЬНЫХ И СОРБЦИОННЫХ СВОЙСТВ МОНТМОРЛИОНА ИЗ МИНЕРАЛОВ СЕРИИ БЕНТАНИДОВ

Clay minerals are phyllosilicates, with individual layers consisting of tetrahedral (T) and octahedral (O) sheets in a 1:1 or 2:1 ratio. Due to isomorphic substitution (e.g., Al3+ for Si4+ in the T-sheet and/or Al3+ for Mg2+ in the O-sheet), the 2:1 layering of many clay minerals (e.g., the smectite group and the vermiculite group) has a permanent negative charge balance with cationic counterions occupying the interstitial space. Montmorillonite clay has the largest surface area and the highest cation exchange capacity. Its current market price (approximately $0,04-0,12/kg) is It is considered to be 20 times cheaper than activated carbon. The surface porosity of montmorillonite obtained from bentonite minerals is significantly lower than that of carbon, therefore, taking into account the abundance and cheapness of minerals, these sorbents have not been neglected until now.