Abstract:
:Sugarcane bagasse was pretreated with ozone to increase lignocellulosic material digestibility. Bagasse was ozonated in a fixed bed reactor at room temperature, and the effect of the two major parameters, ozone concentration and sample moisture, was studied. Acid insoluble and total lignin decreased whereas acid soluble lignin increased in all experiments. Pretreatment barely attacked carbohydrates, with cellulose and xylan recovery rates being >92%. Ozonolysis increased fermentable carbohydrate release considerably during enzymatic hydrolysis. Glucose and xylose yields increased from 6.64% and 2.05%, for raw bagasse, to 41.79% and 52.44% under the best experimental conditions. Only xylitol, lactic, formic and acetic acid degradation compounds were found, with neither furfural nor HMF (5-hydroxymethylfurfural) being detected. Washing detoxification provided inhibitor removal percentages above 85%, increasing glucose hydrolysis, but decreasing xylose yield by xylan solubilization. SEM analysis showed structural changes after ozonization and washing.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Travaini R,Otero MD,Coca M,Da-Silva R,Bolado Sdoi
10.1016/j.biortech.2013.01.133subject
Has Abstractpub_date
2013-04-01 00:00:00pages
332-9eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00165-Xjournal_volume
133pub_type
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