A feasibility study on the multistage process for the oxalic acid pretreatment of a lignocellulosic biomass using electrodialysis

► The feasibility of the recovery and reuse oxalic acid was investigated. ► The electrodialysis (ED) process was effective for recovery oxalic acid. ► ED process removed fermentation inhibitors without loss of fermentable sugar. ► Bioethanol productivity and yield increased up to three times by ED process.