不同预处理对草本芦竹生产燃料乙醇糖化效果比较

草本芦竹作为一种高产新型能源牧草,其生态适应性强,分布广泛,纤维素含量高,适于作为生产燃料乙醇的原料。测定了草本芦竹工业成分与化学组成,采用稀酸法、稀碱法、高温热水法和稀酸催化高温热水法对草本芦竹进行预处理,并采用纤维素酶解,比较不同预处理对纤维素及半纤维素水解的影响。结果表明,稀酸催化高温热水法处理,总水解率达47.91%,处理后木质素减少12.99%。而其他3个处理差别不大,糖产量约为酸催化高温热水法的1/3。

The Effect of Different Pretreatment Methods on Hydrolysis of Cellulose and Semi-cellulose of Arundo donax

Arundo donax is a new energy grass with high yield,strong adaptability,with wide distribution and high cellulose content and can be selected as the raw material for producing fuel ethanol.Four different pretreatment methods were tested to study the effect on hydrolysis of cellulose and semi-cellulose of Arundo donax.The results showed that the total hydrolysis rate of Arundo donax treated by acid catalytic reaction under higher temperature was up to 47.91% and the lignin content could be decreased by 12.99%.There was no significant difference between other three methods and their total hydrolysis rate was about one-thirds of that treated by acid catalytic reaction under higher temperature.