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Thermal degradation kinetics of sugarcane leaves (Saccharum officinarum L) using thermo-gravimetric and differential scanning calorimetric studies

Author:
Kumar, Mohit, Sabbarwal, Shivesh, Mishra, P.K., Upadhyay, S.N.
Source:
Bioresource technology 2019 v.279 pp. 262-270
ISSN:
0960-8524
Subject:
Saccharum officinarum, activation energy, biomass, cellulose, differential scanning calorimetry, differential thermal analysis, hemicellulose, leaves, lignin, models, protocols, pyrolysis, reaction mechanisms, regression analysis, sugarcane, thermogravimetry
Abstract:
Pyrolysis of sugarcane (Saccharum officinarum L) leaves (SCL) has been investigated using DTA/TGA and DSC techniques. Proximate and ultimate analyses and calorific value measurement have been carried out using standard protocols. The sugar cane leaves contain 44% cellulose, 22% hemicellulose and 17% lignin. The pyrolysis have been carried out at six heating rates varying from 5 to 40 °C/min. Analysis of the pyrolysis results has been carried using iso-conversional model free methods as well as multiple linear regression method. For the fractional conversion range of 0.05–0.95, the average apparent activation energy values evaluated from iso-conversional methods have ranged from 214.9 to 239.6 kJ/mol where as in the case of multiple linear regression analysis it has ranged from 25.06 to 57.23 kJ/mol. The multi-step reaction mechanism has been investigated using the Criado method. The results of this study are useful for the design of large scale biomass thermal conversion process.
Agid:
6298064