Spivak V. Sorption of pollutants of different origins by natural and modified saponite clay

The dissertation is dedicated to the investigation of absorption process characteristics of pollutants with different origins from contaminated water systems by natural and modified saponite clays from Tashkovske clay-field, and the development of technology for industrial waste water treatment by contact method using magnetically controlled sorbents (MCS), which based on the available and cheap domestic mineral resources. A modifying influence of physical and chemical activation methods on the structural and absorption characteristics of saponite and the efficiency of its use for water and waste water needs were presented. During experimental investigations of extraction process of substrates with different nature (heavy metals, phenols, organic dyes) rational technical process conditions of waste water treatment using reactant, which is based on saponite clays from Tashkovske clay-field, were the first time determined and scientifically interpreted. An environmentally safe method of used sorbent sludge disposal was proposed. The technology of contact waste water treatment from toxic organic compounds and heavy metals using MCS was carried out and tested in the operating plant. Keywords: absorption, natural disperse minerals, saponite, heavy metals, organic dyes, phenol, modification, activation, magnetically controlled sorbents, contact method, activation energy, mechanism of adsorption.