Journal
BIORESOURCE TECHNOLOGY
Volume 138, Issue -, Pages 124-130Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.03.179
Keywords
Co-gasification; Waste tire; Palm empty fruit bunch; Almond shell; Activation energy
Funding
- Universiti Sains Malaysia [203/PKT/6723001]
- Ministry of Science, Technology and Innovation Malaysia of the USM-PRGS grant [1001/PMEKANIK/8045018]
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In this investigation, palm empty fruit bunch (EFB) and almond shell (AS) were implemented as two natural catalysts rich in alkali metals, especially potassium, to enhance the reactivity of tire-char through co-gasification process. Co-gasification experiments were conducted at several blending ratios using isothermal Thermogravimetric analysis (TGA) under CO2. The pronounced effect of inherent alkali content of biomass-chars on promoting the reactivity of tire-char was proven when acid-treated biomass-chars did not exert any catalytic effect on improving the reactivity of tire-char in co-gasification experiments. In kinetic studies of the co-gasified samples in chemically-controlled regime, modified random pore model (M-RPM) was adopted to describe the reactive behavior of the tire-char/biomass-char blends. By virtue of the catalytic effect of biomass, the activation energy for tire-char gasification was lowered from 250 kJ/mol in pure form 203 to 187 kJ/mol for AS-char and EFB-char co-gasified samples, respectively. (C) 2013 Elsevier Ltd. All rights reserved.
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