Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, People's Republic of China.
Appl Biochem Biotechnol. 2013 Aug;170(7):1780-91. doi: 10.1007/s12010-013-0300-5. Epub 2013 Jun 6.
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).
甘蔗渣用聚乙二醇/甘油在硫酸作用下进行液化。考察了反应时间、液化温度、催化剂用量、液比（液化溶剂/甘蔗渣）等不同液化条件对液化残渣（LR）含量和液化产物羟值和酸值的影响。通过正交实验确定了甘蔗渣的最佳液化条件。结果表明，催化剂用量和反应时间对 LR 百分率的影响大于液比和液化温度。液化产物的羟值和酸值受许多因素的影响，包括液化温度、反应时间、酸含量和液比。随着液化反应的进行，液化产物的羟值降低，而酸值增加。根据所得数据，用一级反应速率定律对液化动力学进行了建模，估算出甘蔗渣液化的表观活化能为 38.30 kJ mol(-1)。
