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The article presents the results of investigation of various modifications based on nonconforming zeolite raw materials rocks of the Holinsky depozit with a low klinoptilolite content (50-55%), which substantiates the feasibility of their involvement in the production of sorbents effective for wastewater treatment from oil products and heavy metal ions. Various methods of modifying zeolites have been studied: with high-silicon compounds (hexamethyldisilazalone and tetraethoxysilane), as well as with a sulfur polymer based on by-products of the production of epichlorohydrin. The investigation of microstructures of obtained samples was carried out using scanning electron spectroscopy (SEM), X-ray phase analysis (XPA) using powder X-ray diffractometry. The fixation of modifiers on the zeolite surface has been proven by IR spectroscopy and energy-dispersive X-ray spectroscopy (EDS). The sorption of heavy metal ions such as nickel and zinc on modified zeolites has been proven by IR, EDS, and inductively coupled plasma atomic emission spectrometry (ICP-AES). To prove the sorption of oil products, IR methods were used, as well as differential scanning calorimetry and thermogravimetry. Сlass of hazard (IV) for spent sorbents was established by biotesting using Daphnia magna Straus and Chlorella vulgaris Beijer .

The research presents the problem of liquidation of dumps of substandard raw materials of zeolite-containing rocks of the Holinsky deposit, measures for the reclamation of disturbed lands. The most effective way to restore ecosystems is renaturation. Time intervals of succession are considered. Renaturation of disturbed lands consists of 6 stages. Possible dominant plants for the proposed options are considered in detail: Stipa lessingiana, Poa platensis, Festuca valesiaca, Poa angustifolia, Elytrigia intermedia, Artemisia vulgaris, Trifolium pratense , Trifolium repens, Agropyron desertorum.

Based on the results of experimental studies of sorption wastewater treatment, a regression-type mathematical model has been developed that adequately describes the effect of all parameters of the ongoing process on the sorption activity of zeolite: initial concentration, sorption time, process temperature, and medium pH. For the first time in research, a generalized criterion for the consistency of behavior and the width of the domain of definition of the model was used. The processes of involving large-tonnage wastes of chemical production to obtain adsorption materials effective for the extraction of heavy metal ions from industrial wastewater have been studied. Natural zeolites were used as the initial matrix, the main component of which is klinoptilolite. A sulfur polymer obtained from epichlorohydrin production wastes with the main component 1,2,3-trichloropropane is proposed as a modifier. Fixation of the modifier on the surface of the zeolite, as well as the effective adsorption of metal ions, have been proven by IR spectroscopy and energy dispersive analysis.

The possibility of utilization of overburden rocks of the Chernovsky brown coal and Baleysko-Taseevsky gold occurrences (Trans-Baikal Region) in the road construction industry is studied. Polymeric additives Cryogelite and StabOL were chosen as stabilizing additives in the compositions of road-building composites. The initial mineral samples were examined by methods of atomic emission spectrometry with inductively coupled plasma, powder diffraction, and infrared spectroscopy. It was found that the introduction to formulation of composites with use of overburden rocks of 8 wt. % Portland cement and 10 wt. % fly ash, as well as stabilizing additives Cryogelit (Chernovskoe occurrence) and StabOL (Baleysko-Taseevskoe occurrence), allows to obtain samples with strength grade M40 and frost resistance grade F15. The biotesting method proved that the obtained composites do not have an acute toxic effect on test objects and are safe for the environment and human health.