Chemical Oxidation with Ozone as Pre-treatment of Lignocellulosic Materials for Bioethanol Production
نویسندگان
چکیده
The main results derived from the ozone pre-treatment of grain straw are shown. The use of ozone reduced acid insoluble lignin content in grain straw, whereas acid soluble lignin increased. This fact resulted in a more accessible structure to enzymes leading to higher enzymatic hydrolysis yield. Ozone consumption after 2.5 h reaction time was about 0.10-0.12 g/g DS, independently of the type of cereal straw. Wheat and rye straw showed the highest sugar release after enzymatic hydrolysis: about 2-2.5 g of glucose was released per gram of ozone consumed and 1.1-1.4 g of xylose/g of ozone consumed in the ozonation stage. Moreover, about 1.5 g of glucose/g of ozone consumed and 1.2 g of xylose/g of ozone consumed were released to the hydrolysis medium when barley and oat straw were pretreated with ozone.
منابع مشابه
Process design and sustainability in the production of bioethanol from lignocellulosic materials
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