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All Journal LONTAR Jurnal Teknik Mesin Undana (LJTMU )
SERAN, AGUSTO BRIA
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Mechanical Engineering

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PENGARUH WAKTU DAN TEMPERATUR HIDROTERMAL TERHADAP HASIL UJI XRD HIDROKSIAPATIT DARI CANGKANG KERANG ALE-ALE SERAN, AGUSTO BRIA; Maliwemu, Erich U. K.; Adoe, Dominggus G. H.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 01 (2025): April 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i01.20042

Abstract

This study aims to analyze the changes in chemical composition and phase of ale-ale shells through X-Ray Diffraction (XRD) tests with variations in temperature and oven time. Ale-ale shell samples obtained from Oesapa Beach, Kupang, East Nusa Tenggara, were processed through the preparation, heating, and characterization stages using XRD. Testing was carried out at temperatures of 500°C and 700°C with variations in heating time of 2, 4, and 6 hours. The results of the XRD test showed phase changes in samples heated at a temperature of 500°C, where in samples with a time of 6 hours decomposition occurred into CaO with a purity level of 53.4%. At a temperature of 700°C, samples heated for 2 hours showed a purity of 53.3%, and at 6 hours the purity reached 48.2%. All samples showed diffraction peaks indicating 100% calcite content. These results provide an understanding of the changes in the crystal structure and purity of ale-ale shell material, which can be used in biomaterial applications, especially for bone graft materials.
Co-Authors Dominggus Godlief Heryson Adoe Maliwemu, Erich U. K.