TY JOUR TI Composite material with high adsorption-catalytic activity based on biochar from sawdust of birch (Betula Pendula) KW pyrolysis KW biochar KW cobalt ferrite KW composite KW sorption KW photocatalysis JO Forestry Engineering Journal AU Doroshenko, A.V. AU Berezhnaya, M.V. AU Tomina, E.V. PY 2025 IS 15 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov