A comprehensive study on by-products of food processing industry pyrolysis using a thermobalance reactor coupled to GC-FID/TCD: Mass, atomic and energy balances, thermokinetic modeling, product distribution, and characterization

•Pyrolysis of food processing industry wastes showed exothermic characteristics.•Gas fraction is composed by high content of CO2 and CO.•Biochar can be applied in stem gasification due the content of K and Ca.•Deconvolution tool was used to assist the kinetic parameters estimation.•Four pseudo-components could describe the thermal behavior of pyrolysis. The current study aims to investigate the pyrolysis process and bioenergetic potential of pineapple peel and passion fruit shell wastes (by-products of food processing industry) by the physicochemical characterization, mass balance, energy balance, atomic balance, and kinetic study. Pyrolysis was performed at low heating rates (5, 10, and 15 °C min−1) in an argon atmosphere in a thermobalance reactor coupled to GC-FID/TCD. The pyrolysis showed a higher yield of non-condensable gases that had low calorific value (