THE PRODUCTION OF CARBON DIOXIDE COMMERCIAL FORM BY UTILIZING BIOGAS FROM LANDFILLS Article Lukanin A.V., Kharlamova M.D., Klevanova E.S., Spicin K.O. GREEN-2020. Graduate Research in Ecology, Engineering and Nature. Российский университет дружбы народов (РУДН). 2020. P. 123-127