Abstract

Being no more use than fertilizer, eggshells are generally considered as garbage. A large number of eggshell wastes are produced from food processing, baking, and hatching industries every year. As a bio-waste, the eggshell with porous structure can still be fully utilized. In this study, eggshell was used as calcium source and template to induce hydroxyapatite (HA) mineralization in hydrothermal reaction. The effects of different calcium sources and phosphorus sources on the morphology and structure of HA were examined. The synthesized particles have been characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy apparatuses. The results showed that the porous of eggshell was beneficial for the infiltration of soluble phosphorus and slowly synthesis of HA under hydrothermal conditions. Porous eggshells and creatine phosphate disodium tended to induce the mineralization of spherical HA. Thus HA derived from biological sources can be a possible material in converting bio-waste into value added products by a simple and effective way.

中文翻译：

---

水热合成法蛋壳钙源诱导羟基磷灰石的矿化作用。

摘要

蛋壳仅用作肥料，通常被视为垃圾。每年，食品加工，烘焙和孵化行业都会产生大量蛋壳废物。作为生物废物，具有多孔结构的蛋壳仍然可以被充分利用。在这项研究中，蛋壳被用作钙源和模板，以在水热反应中诱导羟基磷灰石（HA）矿化。考察了钙和磷的不同来源对HA形态和结构的影响。合成的颗粒已经通过X射线衍射，傅立叶变换红外光谱和扫描电子显微镜设备进行了表征。结果表明，在水热条件下，蛋壳的多孔结构有利于可溶性磷的渗透和HA的缓慢合成。多孔的蛋壳和磷酸肌酸二钠倾向于诱导球形HA的矿化。因此，源自生物来源的HA可能是通过简单有效的方式将生物废物转化为增值产品的可能材料。