TY CONF TI ANALYSIS OF THE USE OF BIOCHAR TO PURIFY WATER FROM FORMALDEHYDE KW poplar wood KW pine wood KW sawdust KW basic activation KW sorption KW formaldehyde JO CIRCULAR ECONOMY FOR THE PURPOSE OF SUSTAINABLE DEVELOPMENT OF INDUSTRIES AND TERRITORIES AU Khodosova, N.A. AU Tomina, E.V. AU Manukovskaya, V.E. PY 2024 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov