Effects of chemical treatments on the bioethanol yield and composition of Isoberlinia doka waste

Isoberlinia doka sawdust; an abundant waste material was pre-treated using FeCl 3 , HCl, NaOH, sequential HCl and NaOH treatments at 121 °C for 15 min to mitigate the challenges of its utilisation as a carbon source for bioethanol production. The effects of these treatments on the biomass were evaluated using Fourier transform infrared (FTIR) spectroscopy and gravimetric methods. The capability of the pre-treated residue to produce fermentable sugars and bioethanol were also assessed. The treated biomass were saccharified using cellulase mix from Aspergillus niger and Trichoderma reesi and fermented using Saccharomyces cerevisiae . The result shows that the chemical treatments significantly ( p