Comparison of Fenton and bismuth ferrite Fenton-like pretreatments of sugarcane bagasse to enhance enzymatic saccharification

• Published in: Bioresource technology 2019-08, Vol.285, p.121343-121343, Article 121343
• Main Authors: Zhang, Yuting, Liang, Ju, Zhou, Wenbing, Xiao, Naidong
• Format: Article
• Language: English
• Subjects: BiFeO3 Fenton-like; Fenton; Pretreatment; Saccharification; Sugarcane bagasse
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2019.121343

•Sugarcane bagasse was pretreated by the Fenton and BiFeO3 Fenton-like pretreatments.•BFP had stronger effects on delignification and hemicellulose removal than FP.•BFP obtained a 2.4-fold higher sugar conversion rate than FP.•OH generated in BFP has higher concentration and longer action time than that in FP.•BFP was the more promising method to improve saccharification in SCB than FP. This study compared enzymatic saccharification of sugarcane bagasse (SCB) after application of two different pretreatment methods, Fenton pretreatment (FP) and BiFeO3 Fenton-like pretreatment (BFP). The composition, morphology and structural properties of SCB with different pretreatments were analyzed. Results showed that, after BFP, the yield of reducing sugar of SCB under enzymatic saccharification for 72 h was 25.8%, and the sugar conversion rate was 36.6%, which were 2.2 and 2.4-fold those of the FP, respectively. Moreover, the removal of hemicellulose and delignification in the BFP was more severe than that in the FP. The determination of hydroxyl radical (OH) in the two different Fenton processes revealed that the OH generated in the BiFeO3 Fenton-like system was higher in concentration and longer in action time than that in the Fenton system, which was likely key to the stronger effect of BFP than FP on the enzymatic saccharification of SCB.