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Biomaterials from Agricultural Waste: Eggshell-based Hydroxyapatite

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Abstract

Hydroxyapatite (HAp) was produced through the hydrothermal conversion of agro-industry byproducts (eggshells). Commercial calcium dibasic phosphate (CaHPO4.2H2O) and lime (CaO), obtained from direct calcining of the eggshells, were the reactants in the synthesis scheme employed. X-ray powder diffraction and scanning electron microscopy confirmed the HAp as the main phase present in the final products.

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Acknowledgments

We want to thank the staff of the Centro de la Materia Condensada (UNAM) and CICESE Campus Monterrey for their technical assistance. We also thank to Dr. Víctor Coello for his kind help in the microscopy experiments. The technical help of Dr. Genoveva Hernandez and Mrs. Carmen Vazquez is gratefully acknowledged.

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Correspondence to V. M. Castaño.

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V.M. Castaño is on sabbatical leave at the Universidad Autónoma de Querétaro.

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Elizondo-Villarreal, N., Martínez-de-la-Cruz, A., Guerra, R.O. et al. Biomaterials from Agricultural Waste: Eggshell-based Hydroxyapatite. Water Air Soil Pollut 223, 3643–3646 (2012). https://doi.org/10.1007/s11270-012-1137-1

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  • DOI: https://doi.org/10.1007/s11270-012-1137-1

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