2 research outputs found
Bioethanol production from coconut husk using DES-NADES pretreatment and enzymatic hydrolysis method
Bioethanol is an alternative fuel produced during biomass fermentation. Among the available
biomass resources for bioethanol production, coconut husk is an interesting raw material due to
its high cellulose content. This study aims to evaluate the coconut husk conversion into bioethanol
using DES (ChCl:MEA) and NADES (Be:La) solvents for the delignication process. The molar ratios of
HBA and HBD of the two solvents were varied (1:4, 1:6, 1:8) at 2, 4, 6, and 8 h for each ratio. The deligni-
ed samples were hydrolyzed using the 5% (w/w) of cellulase enzymes and fermented for seven days
using Saccharomyces cerevisiae. The results showed that DES (ChCl:MEA) and NADES (Be:La) could remove
lignin at about 60.53% and 65.81%. The glucose content was obtained at 0.5% (brix) by both solvents
and bioethanol content was obtained at 13.9% and 14% (v/v) for DES and NADES, respectively