A review on solid oxide derived from waste shells as catalyst for biodiesel production
Conclusion
Transesterification reaction is highly influenced by the reaction conditions, catalyst used, molar ratio of methanol to oil. The catalyst synthesized with the waste shells opens door for renewable catalyst and at the same time recycles the waste generated. The various shells that have been employed have proved that highly active and reusable solid catalysts can be prepared with no time loss by just calcining the shells. Utilization of these waste materials not only reduces the catalyst cost but also promotes environmentally benign process. These shells may also find their utility in other base catalyzed important organic reactions which will add value to the waste generated.