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为解决因生物质秸秆降解能力差而导致秸秆转化为高品位能源的能量转化率低的问题,提出了生物质秸秆热复合预处理。采用单因素方法研究了常温静置、水浴加热、碱处理和热复合预处理4种方式的光合产氢效果及影响热复合预处理效果的因素。结果表明,热复合预处理的产氢效果最好,其产氢量和还原糖得率最大,其次是碱处理的体系,水浴加热随之,而常温静置预处理的产氢效果最差。对于玉米秸秆热复合预处理光合产氢,碱质量分数、水浴加热时间、秸秆颗粒度对产氢能力有不同程度的影响,其中碱质量分数0.75%~1%、水浴加热4 h、颗粒度80~96μm和超微粉碎的热复合预处理产氢效果较佳。
In order to solve the problem of low energy conversion rate of straw into high-grade energy due to poor biomass straw degradation ability, biomass straw pre-treatment was proposed. Single factor method was used to study the effect of photosynthetic hydrogen production and factors that affect the effect of thermal compound pretreatment in four ways: standing at room temperature, water bath heating, alkali treatment and thermal compound pretreatment. The results show that the heat - treatment pretreatment has the best hydrogen production effect, and the yield of hydrogen production and reducing sugar is the highest, followed by the alkali treatment system. The water bath heating followed, while the hydrogen pretreatment at room temperature produced the worst hydrogen production. For the pretreatment of corn stalks, photosynthetic production of hydrogen, alkali mass fraction, water bath heating time and straw particle size had different degrees of hydrogen production ability, with the alkali mass fraction of 0.75% ~ 1%, water bath heating for 4 h and particle size of 80 ~ 96μm and ultrafine pulverized thermal composite pretreatment hydrogen production better.