Journal
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
Volume 170, Issue 7, Pages 1780-1791Publisher
HUMANA PRESS INC
DOI: 10.1007/s12010-013-0300-5
Keywords
Acid number; Bagasse; Hydroxyl number; Liquefaction; Polyhydric alcohols
Funding
- National Science and Technology project [2012BAD32B07]
- Foundation of the Xuyi Center of Attapulgite Applied Technology Research Development and Industrialization [20121004]
- Foundation of the Director of Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences [y107re1001, y107rf1001]
- Natural Science Foundation of Guangdong Province [S2012040007546]
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Bagasse was subjected to a liquefaction process with polyethylene glycol/glycerol using sulfuric acid as catalyst. The effects of various liquefaction conditions, such as reaction time, liquefaction temperature, catalyst content, and liquid ratio (liquefaction solvents/bagasse), on the liquefied residue (LR) content and hydroxyl and acid numbers of liquefied products were investigated. The preferred liquefaction condition of bagasse was determined through orthogonal experiments. The results showed that the catalyst content and reaction time have a greater influence than liquid ratio and liquefaction temperature on the percentage of LR. The hydroxyl and acid numbers of the liquefied products were influenced by many factors, including liquefaction temperature, reaction time, acid content, and liquid ratio. The hydroxyl number of liquefied products decreased as the liquefaction reaction progressed, but the acid number of liquefied products increased. Based on the obtained data, the kinetics for liquefaction was modeled using the first-order reaction rate law and the apparent activation energy for the liquefaction of bagasse was estimated to be 38.30 kJ mol(-1).
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