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Title: The effect of char properties on gasification reactivity
Authors: Duman, Gözde
Uddin, Md Azhar
Yanık, Jale
Keywords: Biomass chars
CO2 gasification
Gasification reactivity
Carbon dioxide
Issue Date: 2014
Publisher: Elsevier Ltd.
Source: Duman, G., Uddin, M.A., and Yanık, J. (2014). The effect of char properties on gasification reactivity. Fuel Processing Technology. 118, 75-81. doi:10.1016/j.fuproc.2013.08.006
Abstract: In this study, CO2 gasification of raw and acid-washed chars obtained from various types of lignocellulosic biomasses (woody and agricultural waste biomasses) was studied under isothermal conditions (850 C) using thermal gravimetric analysis. The effect of surface area and alkali/earth alkali metals on the reactivity of the chars was investigated. The different kinetic models were used to fit with the reactivity data by using least square method. The gasification of chars with higher surface area was found to be faster than that of chars having lower surface area. The acid treatment decreased the overall gasification rate for each raw chars. However, although the AI (alkali index) values of chars obtained from agricultural biomasses had equal or higher than that of woody biomass chars, their initial rates were considerably lower. It was concluded that indigenous alkali metals of chars have a remarkable influence of gasification reactivity but an adequate surface area should be provided to react with CO2.
ISSN: 0378-3820
Appears in Collections:Chemistry / Kimya
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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