Biomass pyrolysis and combustion integral and differential reaction heats with temperatures using thermogravimetric analysis/differential scanning calorimetry

Shen, Jiacheng and Igathinathane, C. and Yu, Manlu and Pothula, Anand Kumar (2015) Biomass pyrolysis and combustion integral and differential reaction heats with temperatures using thermogravimetric analysis/differential scanning calorimetry. Bioresource Technology, 185. pp. 89-98. ISSN 0960-8524

Abstract

Integral reaction heats of switchgrass, big bluestem, and corn stalks were determined using thermogravimetric analysis/differential scanning calorimetry (TGA/DSC). Iso-conversion differential reaction heats using TGA/DSC pyrolysis and combustion of biomass were not available, despite reports available on heats required and released. A concept of iso-conversion differential reaction heats was used to determine the differential reaction heats of each thermal characteristics segment of these materials. Results showed that the integral reaction heats were endothermic from 30 to 700. °C for pyrolysis of switchgrass and big bluestem, but they were exothermic for corn stalks prior to 587. °C. However, the integral reaction heats for combustion of the materials followed an endothermic to exothermic transition. The differential reaction heats of switchgrass pyrolysis were predominantly endothermic in the fraction of mass loss (0.0536-0.975), and were exothermic for corn stalks (0.0885-0.850) and big bluestem (0.736-0.919). Study results provided better insight into biomass thermal mechanism.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 14 May 2019 03:15
Last Modified: 30 May 2019 02:11
Uncontrolled Keywords: big bluestem, corn stover, lignocellulosic biomass, switchgrass thermal properties
Fields of Research : 09 Engineering > 0999 Other Engineering > 099901 Agricultural Engineering
Identification Number or DOI: 10.1016/j.biortech.2015.02.079
URI: http://eprints.usq.edu.au/id/eprint/35698

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