Abstract:

The decomposition and utilization of ligno-eellulose is of great significance in overcoming future energy crisis and environment problems. This paper simulates the main component of biomass-eellulose with pledget and the filter paper. The experiment on the ligno-eellulose saeeharifieation is carried out under different sulfur acid concentration, reaction time and reaction temperature. And we try to find the best reaction condition taking reducing sugar as target. The results indicate that the yield of reducing sugar increases with the increase of sulfur acid concentration when reaction time is 60 minutes. And it obtains the best value when reaction time increases to 80 minutes and sulfur acid concentration is 4%. Considering the cost of sulfur acid and the treatment of waste liquid ,we choose 4% sulfur acid concentration and 80 minutes of reaction time as the best experiment condition.

Key words: pledget , filter paper, sulfur acid , reducing sugar, cellulose

摘要：

木质纤维素的分解利用对于解决未来的能源危机与环境问题具有重大意义。以脱脂棉、滤纸模拟生物质的主要组分之一纤维素，在不同稀硫酸浓度、时间和温度反应参数下，进行纤维素水解糖化试验研究，以还原糖量为指标，考察纤维素糖化最佳反应条件。研究结果表明，在加热时间为60min时，还原糖得率随硫酸浓度的增加而增加；在加热时间为80min时，还原糖得率在硫酸浓度4％处出现最大值。综合硫酸及废液处理成本考虑，得到实验最佳条件为4％硫酸加热80min。

关键词: 脱脂棉 滤纸 硫酸 还原糖 纤维素