Investigation of the evolved pyrolytic products and energy potential of Bagasse: experimental, kinetic, thermodynamic and boosted regression trees analysis

Abstract
This study explored bagasse's energy potential grown using treated industrial wastewater through various analyses, experimental, kinetic, thermodynamic, and machine learning boosted regression tree methods. Thermogravimetry was employed to determine thermal degradation characteristics, varying the heating rate from 10 to 30 °C/min. The primary pyrolysis products from bagasse are H2, CH4, H2O, CO2, and hydrocarbons. Kinetic parameters were estimated using three model-free methods, yielding activation energies of approximately 245.98 kJ mol−1, 247.58 kJ mol−1, and 244.69 kJ mol−1. Thermodynamic parameters demonstrated the feasibility and reactivity of pyrolysis with ΔH ≈ 240.72 kJ mol−1, ΔG ≈ 162.87 kJ mol−1, and ΔS ≈ 165.35 J mol−1 K-1. The distribution of activation energy was analyzed using the multiple distributed activation energy model. Lastly, boosted regression trees predicted thermal degradation successfully, with an R2 of 0.9943. Therefore, bagasse's potential as an eco-friendly alternative to fossil fuels promotes waste utilization and carbon footprint reduction.

Acknowledgements
This research received funding from several sources: the National Natural Science Foundation of China, under grant number 52376104; the Joint Funds of the National Natural Science Foundation of China, with grant number U20A20302; the Innovative Group Projects of Hebei Province, identified by grant number E2021202006; and the Science and Technology Project in the Universities of Hebei Province, with project number JZX2023006.

Publisher
Elsevier BV

Journal
Bioresource Technology

DOI
10.1016/j.biortech.2023.130295

Additional Links
https://linkinghub.elsevier.com/retrieve/pii/S0960852423017236