A comprehensive thermo-kinetics devolatilization analysis of waste motor oil: Thermal degradation kinetics, kinetic model, thermodynamic analysis, and ANN
Asmita Mishra, Mayuri Sonowal, Venkata Yasaswy Turlapati, Payal Maiti, B.C. Meikap
Abstract
The improper management of waste motor oil (WMO) disturbs the ecology. However, WMO is a potential feedstock for alternate energy production employing the pyrolysis technique. The present study presents the feasibility of WMO pyrolysis in sustainable alternate energy generation. Five different models, namely Flynn-Wall-Ozawa (FWO) and Starink, Coats-Redfern, consecutive reaction model (CRM), and distributed activation energy model (DAEM), were applied for the assessment of the thermo-kinetic parameters of WMO pyrolysis using the thermogravimetric analysis at three discrete heating rates (5, 10, and 40 ºC min−1). The thermogravimetric experimental data of WMO pyrolysis is validated by the artificial neural network (ANN). The average activation energy of WMO for FWO (140.7 kJ mol−1), Starink (143.6 kJ mol−1), Coats-Redfern (116.08 kJ mol−1), CRM (123.22 kJ mol−1), and DAEM (110 kJ mol−1) are lower than conventional organic wastes and hence beneficial for the co-pyrolysis process.