4. CONCLUSION
Huskcatacid and Huskcatbase have been successfully
developed from rice husk ash and employed as heterogenous solid support
for the production of biodiesel from PFAD. The catalysts were
conveniently prepared and employed in the esterification and
transesterification reaction to afford high yield of biodiesel
(>97% yield) with reusability up to three times. The
biodiesel performance was demonstrated on alternative diesel engine with
only small amount of smoke emission compared to the commercial diesel.
This study indicated that rice husk demonstrated a good potential as
solid support heterogeneous catalysts and feedstock for value-added
products, which also assists to overcome agricultural waste management
issues.