Cellulosic Fiber Waste Feedstock for Bioethanol Production via Bioreactor-Dependent Fermentation

The bioconversion of environmental wastes into energy is gaining much interest in most developing and developed countries. current study concerned with the proper exploitation some industrial wastes. Cellulosic fiber waste was selected as a raw material for producing bioethanol an alternative source. A combination physical, chemical, enzymatic hydrolysis treatments applied to maximize concentration glucose that could be fermented yeast bioethanol. results showed maximum production 13.9 mg/mL achieved when 5% cellulosic treated 40% HCl, autoclaved, followed hydrolysis. Using SEM FTIR analysis, instrumental characterization treatment confirmed effectiveness degradation by turning long threads fibers small pieces, addition appearance new functional groups peak shifting. potent strain isolated from rotten grapes identified Starmerella bacillaris STDF-G4 (accession number OP872748), which used ferment obtained units under optimized conditions. 3.16 recorded 7% anaerobically incubated at 30 °C broth culture pH adjusted 5. conditions were scaled up flasks fermentation bioreactor concentration. data ability produce 4.13 after first 6 h incubation double amount 36 reach 8.6 mg/mL, indicating efficiency reducing time significantly increasing product.