RSM predicts ozonolysis pretreatment performance on lignin degradation and TRS recovery.
•
Lignin degradation and TRS recovery were optimized by desirability function.
•
Particle size of OPF is important for lignin degradation.
•
Optimum lignin degradation and TRS recovery were 88.9% and 99.9%, respectively.
•
Ozonolysis effectively degraded lignin in OPF and improved TRS recovery.