Abstract
This study aimed to evaluate degradation and calorific value of urban solid residues (USRs) produced in the city of Campina Grande (PB), based on residues deposited in a bioreactor that simulates landfill conditions. The USR samples presented low thermal stability, because occur five stages of loss, from room temperature to 1000 °C, associated with volatilization of solvents (water and alcohol), the combustion of cellulose, natural rubber, putrescible organic matter and plastic materials, as well as oxides formed during process. USR studied have an estimated average calorific value of 15,678.98 J kg−1 that could generate 1,518,551.40 kW h−1 day of thermal energy or 303,710.28 kW h−1 day of electricity, with conversion efficiency of 20 %.
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