Calcium Oxide Derived from Waste Shells of Mussel, Cockle, and Scallop as the Heterogeneous Catalyst for Biodiesel Production

<table>XRD patterns of waste mussel, cockle, and scallop shell calcined at 1,000°C (■: CaO).</table>

The Scientific World Journal

Figure 3: Calcium Oxide Derived from Waste Shells of Mussel, Cockle, and Scallop as the Heterogeneous Catalyst for Biodiesel Production 