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Thirty grammes (30gms)of oil palm fiber were mixed with three different weights of sawdust and slurry oil (5,10,and 15gm) respectively, dried and compacted to three bulk density levels of 1.86,2.0,and 2.14g/ml with a briquetting machine. Calorific values of the samples were determined using a bomb calorimeter. (Model XRY-1A). The experimental design used was Response Surface Methodology, exploring the effects of the three levels of the three factors of quantity of sawdust, slurry oil and compaction density of the oil palm fiber on the calorific values of the samples. The factors that affected the calorific yield of the oil palm fiber are the linear and quadratic effects of the quantity of slurry oil added to the mixture. This factors accounted for about 92.2% of the variation in effects. Also the linear and quadratic effects of compacted density were significant at 5% probability levels.
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