NDLI: Pyrolysis, combustion and oxy-combustion studies of sugarcane industry wastes and its blends

Content Provider	Springer Nature Link
Author	Silva, Daniel R. Crespi, Marisa S. Crnkovic, Paula C. G. M. Ribeiro, Clovis A.
Copyright Year	2015
Abstract	The aim of this work was on the thermal characterization of wastes of the sugarcane industry, such as bagasse, filter cake and vinasse, in both forms: pure and blended. Thermogravimetric analysis (TG), derivative thermogravimetric (DTG) and differential thermal analysis (DTA) were used for the evaluation of the thermal behavior of the samples under four different atmospheres: N$_{2}$, CO$_{2}$, N$_{2}$/O$_{2}$ and CO$_{2}$/O$_{2}$. Comparison of thermal behavior of the samples under combustion (N$_{2}$/O$_{2}$) and oxy-combustion (CO$_{2}$/O$_{2}$) reveals that replacing N$_{2}$ by CO$_{2}$ causes displacement of mass loss steps to higher temperatures and increases some DTG peaks. Higher heat capacity of carbon dioxide and higher partial pressure of CO$_{2}$ molecules in relation to N$_{2}$ ones explain these observations. Under CO$_{2}$ (100 %) environment, an endothermic event—due to CO release—is observed at around 900 °C, which is attributed to the reverse Boudouard reaction. Interestingly, in all samples, when vinasse is present, such endothermic event starts at lower temperature (~700 °C), which can be understood as a reaction catalyzed by the high potassium content in the vinasse. Synergistic effect studies indicated that bagasse improved reactivity of blends due to its higher volatile content. Since there are no reports regarding the thermal characterization of wastes of the sugarcane industry under combustion, oxy-combustion and gasification atmospheres, this work establishes an important database for the study of similar types of biomass in the field of bioenergy.
Starting Page	309
Ending Page	318
Page Count	10
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	121
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-03-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bagasse Vinasse Filter cake Thermal analysis Oxy-combustion Gasification Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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