SINTESIS CaO DARI CANGKANG KERANG ALE-ALE (Meretrix meretrix) PADA SUHU KALSINASI 900oC
Abstract
Ale-ale (Meretrix-meretrix) merupakan jenis kerang dari spesies vertebrata yang banyak terdapat di Kabupaten Ketapang. Penelitian ini dilakukan untuk mensintesis kalsium oksida dari cangkang kerang ale-ale dengan proses kalsinasi pada suhu 900oC. Karakteristik kandungan yang terdapat pada cangkang kerang ale-ale dapat diketahui dengan menggunakan analisis X-Ray Fluorescence (XRF) dan X-Ray Diffraction (XRD). Hasil analisis XRF menunjukkan bahwa cangkang kerang ale-ale mengandung kalsium oksida sebesar 87,138%. Hasil difraktogram XRD pada kalsinasi suhu 900 °C menunjukkan adanya mineral CaO yang muncul pada 2θ: 32,22 °, 37,36 ° dan 53,85 ° dan mineral Ca(OH)2 yang muncul pada 2θ: 17,95 °, 28,67 ° dan 34,20 °. Munculnya Ca(OH)2 dikarenakan CaO mudah terhidrasi oleh udara dan proses pemanasan menyebabkan CaO terdispersi di dalam air.
Kata Kunci : ale-ale (Meretrix meretrix), kalsium oksida, dan kalsinasi
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