Valorizing Waste Lignocellulose-Based Furniture Boards by Phosphoric Acid and Hydrogen Peroxide (Php) Pretreatment for Bioethanol Production and High-Value Lignin Recovery

摘要: Three typical waste furniture boards (fiberboard, chipboard, and blockboard) were pretreated with phosphoric acid hydrogen peroxide (PHP). The fractionation process of these feedstocks was attempted in order to harvest the cellulose-rich fraction for enzymatic hydrolysis bioethanol conversion; further, lignin recovery also considered this process. results indicated that 78.9–91.2% cellulose recovered fraction. decreased crystallinity, which promoted water retention capacity enzyme accessibility, contributed greatly excellent performance Therefore, rather high cellulose–glucose conversions 83.3–98.0% achieved by hydrolyzing boards, allowed harvesting 208–241 g glucose from 1.0 kg feedstocks. Correspondingly, 8.1–10.4 g/L ethanol obtained after 120 h simultaneous saccharification fermentation. harvested exhibited abundant carboxyl –OH groups (0.61–0.67 mmol g−1). In addition, approximately 15–26 oligosaccharides integrated during PHP pretreatment. It shown pretreatment is feasible highly recalcitrant biomass board materials, can diversify bioproducts used biorefinery concept.