Preparation of calcium oxide from Anas Platyrhynchos egg shell through thermal decomposition at 600°-1100°C for 3 hours has been carried out. Calcium oxide was characterized using XRD and FT-IR Spectrofotometer. The results showed that diffraction pattem of XRD decomposition at 900°C quite similar with Standard diffraction of CaO from JCPDS with 20 value at 32.3°, 37.4°, 54.0°, 64.2°, an…