TY JOUR TI SORPTION OF HEAVY METAL IONS BY NATURAL HEILANDITE MODIFIED WITH ORGANOSILICON COMPOUND KW adsorption KW modification KW ions of heavy metal KW water treatment JO Modern Technologies and Scientific and Technological Progress AU Chugunov, A.D. AU Filatova, E.G. AU Nikolaenko, R.A. PY 2022 IS 2022 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»