초록
Olive tree biomass (OTB) is an agricultural residue which can be used as raw material for bioethanol production. OTB was pretreated with 0.05-0.275M FeCl<SUB>3</SUB> solutions at 120-180<SUP>o</SUP>C for 0-30min. Enzymatic hydrolysis yields were used for assessing pretreatment performance. Optimum FeCl<SUB>3</SUB> pretreatment conditions were found to be 152.6<SUP>o</SUP>C, 0.26M FeCl<SUB>3</SUB> for 30min. Under such conditions, 100% of hemicellulose was removed, and enzymatic hydrolysis of pretreated solids resulted in a yield of 36.6g glucose/100g of glucose in the raw material. Hemicellulosic sugar recovery in the prehydrolysate was 63.2%. Results compare well with those obtained by other pretreatment strategies on the same raw material, confirming FeCl<SUB>3</SUB> solutions as a new, feasible approach for bioethanol production.