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Kinetic modeling of thermal decomposition of sugarcane bagasse in the inert gas environment
Author(s) -
Van Nam Huynh,
Tam Truong Thanh,
Tho Van Dinh Son
Publication year - 2019
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201900077
Subject(s) - hemicellulose , bagasse , thermogravimetric analysis , thermal decomposition , decomposition , cellulose , activation energy , chemical process of decomposition , pyrolysis , lignin , materials science , chemical engineering , inert gas , kinetics , chemistry , pulp and paper industry , organic chemistry , composite material , physics , quantum mechanics , engineering
Sugarcane bagasse was characterized by thermogravimetric analysis (TGA) with the different heating rates, and nitrogen carrier from 30 to 800 o C. Through decreasing the sample's mass by temperature, the stage of thermal decomposition could be determined. Specifically, there were three stages of decomposition including moisture escape stage, decomposition of cellulose stage, hemicellulose and lignin decomposition stage. On the other hand, based on the results of TGA the activation energy of decomposition process was determined by the inverse of the Flynn‐Wall‐Ozawa (FWO) method and Kissinger‐Akahira‐Sunose (KAS) method. The calculated results were compared with the activation energy by the Coats‐Redfern method and Criado method in order to find the kinetics of bagasse pyrolysis process. Accordingly, when the conversion of reaction was lower than 75 %, corresponding to the decomposing process of hemicellulose and cellulose, the thermal decomposing process of bagasse obeyed diffusion kinetics of model D 2 , D 3 and D 4 .