微波辐射对硫酸催化稻草水解的促进作用  

Enhancement of Sulfuric Acid Catalytic Hydrolysis of Rice Straw by Microwave Irradiation

作　　者：龚妍[1,2] 尹笃林[1,2] 李慧[1,2] 郭建平[1,2] 

机构地区：[1]湖南师范大学化学化工学院 [2]化学生物学及中药分析教育部重点实验室,湖南长沙410081

出　　处：《生物质化学工程》2009年第3期5-8,共4页Biomass Chemical Engineering

基　　金：国家自然科学基金资助项目(20572021)

摘　　要：研究了微波辐射对硫酸催化稻草水解的促进作用。考察了微波辐射功率、辐射时间、硫酸质量分数及每升硫酸溶液中稻草添加量对还原糖得率的影响。与常规酸水解比较,微波辐射可显著加快水解速率,缩短糖化时间。采用正交试验法对微波辐射下稻草硫酸水解条件进行了优化,最佳条件为:微波功率280 W,辐射时间30 m in,硫酸质量分数25%,每升硫酸溶液中稻草添加量30 g,还原糖得率达到26.45%。Under microwaves irradiation, the enhancement of sulfuric acid hydrolysis process of rice straw was studied. The effects of microwave power, irradiation time, mass fraction of sulfuric acid and rice straw amount in 1 L sulfuric acid solution on yield of reducing sugar were investigated. Compared with conventional acid hydrolysis, microwave radiation can significant!y raise the rate of hydrolysis and shorten the time of saccharification. By means of orthogonal experiment, the conditions for sulfuric acid hydrolysis of rice straw under microwaves irradiation were optimized as follows ： microwave power 280 W, irradiation time 30 min, sulfuric acid mass fraction 25 %, rice straw amount in 1 L sulfuric acid solution 30 g, and the reducing sugar yield reached 26.45 %.

关 键 词：微波 稻草水解 还原糖 正交试验 

分 类 号：TQ352.1[化学工程]