TY CONF TI EFFECT OF SOLUTION pH AND MASS OF THE SORBENT ON SORPTION AND DEGREE OF PURIFICATION OF WATER FROM COPPER IONS BY MAGNESIUM AND ZINC FERRITES KW sorbents KW magnesium ferrite KW zinc ferrite KW heavy metals KW copper ions KW sorption KW water treatment KW waste water KW pH of the solution KW sorbent mass KW environment protection JO ENERGY-SAVING AND ENVIRONMENTALLY FRIENDLY TECHNOLOGIES IN THE FORESTRY INDUSTRY AU Molchanova, O.N. AU Novikova, L.A. AU Tomina, E.V. AU Meshcheryakova, A.A. PY 2024 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov