Thermal Behavior of Hazel Sterculia Seeds: A TG-FTIR Study

Vikranth Volli ； Anjani Ravi Kiran Gollakota ； Chi-Min Shu

《Journal of Innovative Technology》 3卷1期 (2021/03) Pp. 1-6

https://doi.org/10.29424/JIT.202103_3(1).0001

摘要

The efficient conversion of biomass (a widely available renewable energy source) to energy could play a prominent role in meeting increasing global energy demands. This research examines the physicochemical characteristics and bioenergy potential of hazel sterculia (Sterculia foetida L.) (HS) seeds. The degradation thermokinetics were evaluated using thermogravimetric analysis in air atmosphere at different heating rates. Thermal analysis of the HS seeds was characterized by three-stage degradation with two major mass loss steps (98.4%) having onset temperatures in the range of 232.1-266.5 °C. Thermogravimetry coupled Fourier transform infrared spectroscopy analysis (TG-FTIR) revealed the presence of several organic compounds, such as H_2O, CH_4, CO_2, CO, aldehydes, and esters in the feedstock. Isoconversional Kissinger, Kissinger-Akahira-Sunose (KAS), and Flynn-Wall-Ozawa (FWO) methods were applied to evaluate the thermokinetic parameters. The estimated average values of apparent activation energy for the second and third stages were 110.1 and 80.4 kJ mol^(-1), with correlation coefficients of 0.99 and 0.98, respectively. The heating value of the HS seeds was determined to be 20.5 MJ kg^(-1). The HS seeds were determined to be a potential biomass feedstock to produce biofuels, value-added chemicals, and bioenergy.

關鍵字

Hazel sterculia seeds ； Onset temperature ； TG-FTIR ； Isoconversional methods ； Apparent activation energy

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