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Pyrolysis and kinetic analyses of Camel grass (Cymbopogon schoenanthus) for bioenergy

Author:
Mehmood, Muhammad Aamer, Ye, Guangbin, Luo, Huibo, Liu, Chenguang, Malik, Sana, Afzal, Ifrah, Xu, Jianren, Ahmad, Muhammad Sajjad
Source:
Bioresource technology 2017 v.228 pp. 18-24
ISSN:
0960-8524
Subject:
Cymbopogon, Gibbs free energy, Ischaemum, activation energy, bioenergy, biomass, calorimetry, enthalpy, grasses, heat, models, pyrolysis
Abstract:
The aim of this work was to study the thermal degradation of grass (Cymbopogon schoenanthus) under an inert environment at three heating rates, including 10, 30, and 50°Cmin−1 in order to evaluate its bioenergy potential. Pyrolysis experiments were performed in a simultaneous Thermogravimetry–Differential Scanning Calorimetry analyzer. Thermal data were used to analyze kinetic parameters through isoconversional models of Flynn-Wall-Ozawa (FWO) and Kissenger-Akahira-Sunose (KSA) methods. The pre-exponential factors values have shown the reaction to follow first order kinetics. Activation energy values were shown to be 84–193 and 96–192kJmol−1 as calculated by KSA and FWO methods, respectively. Differences between activation energy and enthalpy of reaction values (∼5 to 6kJmol−1) showed product formation is favorable. The Gibb’s free energy (173–177kJmol−1) and High Heating Value (15.00MJkg−1) have shown the considerable bioenergy potential of this low-cost biomass.
Agid:
5605602