TY CONF TI POSSIBLE WAYS TO RECYCLE SOLID MUNICIPAL WASTE KW polyethylene terephthalate (PET) KW PET recycling KW secondary recycling,municipal solid waste sorting plant (MSWSP) KW flakes KW solid municipal waste (MSW) KW OAO "Ecotekhnologii," waste sorting KW flotation JO INTERNATIONAL EARTH DAY - 2025 AU Babuntsova, K.D. AU Kozyuchic, A.A. AU Moiseeva, E.V. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov