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Optimization of torrefaction conditions for high energy density solid biofuel from oil palm biomass and fast growing species available in Malaysia


Citation

Chin, K. L. and H'ng, Paik San and Go, W. Z. and Lim, Tau Wai and Maminski, M. and Md. Tahir, Paridah and Abdullah, Luqman Chuah (2013) Optimization of torrefaction conditions for high energy density solid biofuel from oil palm biomass and fast growing species available in Malaysia. Industrial Crops and Products, 49. pp. 768-774. ISSN 0926-6690; ESSN: 1872-633X

Abstract / Synopsis

Without appropriate treatment, lignocellulosic biomass is not suitable to be fed into existing combustion systems because of its high moisture content, low bulk energy density and difficulties in transport, handling and storage. The aim of this study was to investigate the effects of torrefaction treatment on the weight loss and energy properties of fast growing species in Malaysia (Acacia spp., and Macaranga spp.) as well as oil palm biomass (oil palm trunk and empty fruit bunch). The lignocellulosic biomass was torrefied at three different temperatures 200, 250 and 300 °C for 15, 30 and 45 min. Response surface methodology was used for optimization of torrefaction conditions, so that biofuel of high energy density, maximized energy properties and minimum weight loss could be manufactured. The analyses showed that increase in heating values was affected by treatment severity (cumulated effect of temperature and time). Our results clearly demonstrated an increased degradation of the material due to the combined effects of temperature and treatment time. While the reaction time had less impact on the energy density of torrefied biomass, the effect of reaction temperature was considerably stronger under the torrefaction conditions used in this study. It was demonstrated that each biomass type had its own unique set of operating conditions to achieve the same product quality. The optimized torrefaction conditions were verified empirically and applicability of the model was confirmed. The torrefied biomass occurred more suitable than raw biomass in terms of calorific value, physical and chemical properties. The results of this study could be used as a guide for the production of high energy density solid biofuel from lignocellulosic biomass available in Malaysia.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Forestry
Institute of Tropical Forestry and Forest Products
DOI Number: https://doi.org/10.1016/j.indcrop.2013.06.007
Publisher: Elsevier
Keywords: Torrefaction; Oil palm biomass; Fast growing species; High energy density; Solid biofuel
Depositing User: Nabilah Mustapa
Date Deposited: 25 Jul 2015 10:10
Last Modified: 08 Sep 2015 12:25
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.indcrop.2013.06.007
URI: http://psasir.upm.edu.my/id/eprint/28727
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