Plackett-Burman Design Screening the Factors Affecting Torrefaction of Palm Empty Fruit Bunches by Using Plackett-Burman Design
Keywords:
Torrefaction process, Palm empty fruit bunches, Experimental design, Plackett-Burman DesignAbstract
Torrefaction is a thermochemical treatment for the production of solid fuel from biomass which promotes the increasing of fuel quality. This process involves the heating of lignocellulose at temperature range 200-320oC in the absence of oxygen. The decomposition of cellulose, hemicellulose and lignin depends on several parameters. This research aims to investigate the screening of factors affecting torrefaction of palm empty fruit bunches which is a waste from oil palm tree. A Plackett–Burman experimental design is applied for screening the influence of operation parameters such as temperature, time, oxygen content, heating rate and palm empty fruit bunches size. Mass yield, moisture content, volatile matter, fixed carbon content, ash content and calorific value are analyzed as the response to evaluate the performance of torrefaction conditions. The significant parameters are selected based on the analysis of variance (ANOVA) results. The results show that the temperature and time are significant parameters.
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