Direct combustion is the commonest process for converting biomass to valuable energy. All biomass can be burned straight for heating structures and drinking water, for offering industrial process heat, and for making electrical power in steam turbines. pure - without qualification; utilised informally as (generally pejorative) intensifiers; "an arrant idiot"; https://purebiofuelsdelperusac54218.thekatyblog.com/36751990/new-step-by-step-map-for-pure-biofuels-del-perú-sac-ruc