ZEOLITES MODIFIED with POLYETHYLENE POLYAMINE and EPOXY RESIN to EXTRACT LEAD IONS from WASTEWATER

МОДИФИЦИРОВАННЫЕ ПОЛИЭТИЛЕНПОЛИАМИНОМ И ЭПОКСИДНОЙ СМОЛОЙ ЦЕОЛИТЫ ДЛЯ ИЗВЛЕЧЕНИЯ ИОНОВ СВИНЦА ИЗ СТОЧНЫХ ВОД
Kambarova E.A. Gavrilenko M.A. Bektenov N.A.
2021 Tomsk Polytechnic University, Publishing House

Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering
2021 #332 Issue 1 7 - 13 pp.

The relevance. Development of effective and inexpensive sorbents of a wide profile is an urgent problem. In this regard, it is necessary to use new modified ion exchangers applied for wastewater treatment and control over the content of various substances in the environment. In order to increase sorption characteristics, modification is performed. Modification of sorbents with improved sorption and kinetic characteristics has great prospects, such as highly permeable cross-linked polyelectrolytes with a high absorption rate of large ions, valuable physicochemical properties, cheap natural minerals modified with polyethylene polyamine and epoxy resins in order to produce reactive copolymers with epoxy groups, capable of participating in curing reactions in the presence of acid compounds and basics. The research is caused by the need for wastewater treatment of metallurgical enterprises from Pb²⁺ ions. Lead compounds are toxic substances that exhibit mutagenic, carcinogenic properties; in addition, Pb²⁺ ions embedded in biogenic forms have the property of locally accumulating in natural objects, thereby being a strong ecotoxicant. The main aim of the research is to determine the sorption properties of natural zeolite and its modified form in relation to the Pb² + ion and to optimize the sorption conditions. Objects: Shanghai natural zeolite and its modified polyethylenepolyamine and epoxy resin form. Methods: spectrophotometry. Results. Sorbents modified with polyethylene polyamine and epoxy resin based on Shanghai natural zeolite have been obtained. The optimal conditions for the pH sorption of Pb²⁺ ions under static conditions were established. When a modified natural zeolite is used in the pH range of 7–9, lead ions are extracted by 90 % in comparison with the original zeolite. Modified natural zeolite can be used as a sorption material for industrial and waste water treatment.

Epoxy resin , Pb^{2 +} cation , Polyethylenepolyamine , Shanghai natural zeolite , Sorption

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Taraz State University named after M.Kh. Dualty, 60, Tole bi street, Taraz, 080000, Kazakhstan
National Research Tomsk Polytechnic University, 30, Lenin avenue, Tomsk, 634050, Russian Federation
Kazakh National Pedagogical University named after Abay, 13, Dostyk avenue, Almaty, 050000, Kazakhstan

Taraz State University named after M.Kh. Dualty
National Research Tomsk Polytechnic University
Kazakh National Pedagogical University named after Abay

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