Preparation of Calcium Nitrate (Ca(NO3)2) from Egg Shells

Enni Apriliyani, Chofifah Indar Parawangsyah, Khaerul Anwar, Nadiyah Zalfa, Sri Tria Rahmawati Tria Rahmawati, Soraya Ulfa Muzayanha, Khikmah Nur Rikhy Stulasti

Abstract


The Indonesian people's consumption of eggs increases every day which causes wasted eggshells to also increase. The shells from eggs that have been thrown away will become waste which can cause the surrounding environment to become polluted and unhealthy. Eggshell waste can be used as a basic ingredient for making calcium nitrate (Ca(NO3)2) because it contains high calcium carbonate of 98.2 %. The egg shells used in this study were native chicken, domestic chicken, duck and quail egg shells. The process of making calcium nitrate from eggshells uses the lime method with a leaching process, before being used the eggshells are prepared first by soaking using 5 % NaClO and then made into calcium nitrate powder. The formed calcium nitrate was tested qualitatively and quantitatively. The qualitative test of calcium nitrate was carried out using a turbidity meter while the quantitative test was carried out by titrating a solution of calcium nitrate using an EDTA solution. The highest conversion value obtained was in the quail shell sample, which was 89.95 % gram with a yield weight of 1.15 gram. Based on the results obtained, the quail eggshell contains a high content compared to other eggshell samples.

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DOI: https://doi.org/10.20961/esta.v3i2.81419

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