Alkaline hydrogen peroxide pretreatment of cashew apple bagasse for ethanol production: Study of parameters

作者：da Costa Correia Jessyca Aline; Marques Junior Jose Edvan; Goncalves Luciana Rocha B; Ponte Rocha Maria Valderez

来源：Bioresource Technology, 2013, 139: 249-256.

DOI：10.1016/j.biortech.2013.03.153

• Cashew apple bagasse
• Alkaline hydrogen peroxide pretreatment
• Enzymatic hydrolysis
• Lignin removal

The alkaline hydrogen peroxide (AHP) pretreatment of cashew apple bagasse (CAB) was evaluated based on the conversion of the resultant cellulose into glucose. The effects of the concentration of hydrogen peroxide at pH 11.5, the biomass loading and the pretreatment duration performed at 35 degrees C and 250 rpm were evaluated after the subsequent enzymatic saccharification of the pretreated biomass using a commercial cellulase enzyme. The CAB used in this study contained 20.56 +/- 2.19% cellulose, 10.17 +/- 0.89% hemicellulose and 35.26 +/- 0.90% lignin. The pretreatment resulted in a reduced lignin content in the residual solids. Increasing the H2O2 concentration (0-4.3% v/v) resulted in a higher rate of enzymatic hydrolysis. Lower biomass loadings gave higher glucose yields. In addition, no measurable furfural and hydroxymethyl furfural were produced in the liquid fraction during the pretreatment. The results show that alkaline hydrogen peroxide is effective for the pretreatment of CAB.

• 出版日期2013-7