TY JOUR TI PROBLEMS OF REGENERATION OF MODIFIED ZEOLITE KW regeneration KW heavy metals KW modified zeolite JO Modern Technologies and Scientific and Technological Progress AU Chugunov, A.D. AU Filatova, E.G. AU Chebunin, V.A. PY 2023 IS 2023 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»