Calcium carbonate is the richest found in wase shells and bovie bone and have been utitized for various applications the calcination. When calcined at a certain temperature calcium carbonate converts into CaO, which is a metal oxide. The CaO prepared from the waste shells have potential to be used as catalyst in biodiesel production process. The applications on the calcined waste shell or bovie bone by coating them on the glass beads used as solid catalyst for biodiesel preparation. Utilization of waste shells as a source of CaO not only gives ...