A Comparative Study of the Characteristics of CaO from Sea Shells Waste (Anadara granosa) and Egg Shells Waste (Gallus SP) as Heterogeneous Catalyst for Biodiesel Production E. Elwina (a) *, Irwan Nurdin (a) , Muhammad Yasir (a), Y. Yunardi (b)
(a) Department of Chemical Engineering, Politeknik Negeri Lhokseumawe, Lhokseumawe, Aceh, Indonesia
(b) Department of Chemical Engineering, Syiah Kuala University, Darussalam, Banda Aceh, Indonesia -
Abstract
The most commonly used catalysts in biodiesel production are homogeneous bases. However, the use of this catalyst has a disadvantage and it can not be reused. In contrast to a heterogeneous catalyst which is easier in the product purification process, they can be reused so as to minimize waste. In this study, biodiesel was made using a CaO catalyst as a heterogeneous base catalyst, CaO is synthesized from the CaCO3 calcination process. The source of CaCO3 is obtained from eggshell waste and sea shells waste. The Cao catalyst is made by calcining in a furnace at a temperature of 800 celcius degree for 6 hours, and then the calcined catalyst is used as a catalyst for biodiesel. production by the transesterification method with the ratio of reactants for 2 hours by varying concentrations of catalyst . The results show that the best analysis of the characteristics is CaO catalyst derived from eggshells waste 5 percent with a yield of 84.46 percent, the density is 0.853, water content is 0.07 percent and viscosity is 4.393. Characterized by SEM and FTIR shows the micrographs prove that the catalyst shows a bigger surface.
