Preparation of nano‐structured pig bone hydroxyapatite for high‐efficiency adsorption of Pb²⁺ from aqueous solution

Abstract

The nano‐structured hydroxyapatite was prepared from pig bone materials by mineralization. The obtained nano‐structured bone was much better compared to the bone without nanostructure for removing Pb2+. The process was investigated under different conditions including contact time, initial Pb2+ concentration, and pH. The pseudo‐second‐order kinetic model and Langmuir isotherm model were suitable for describing adsorption process. Moreover, the maximum adsorption capacities of nano‐structured bone and bone without nanostructure were 312.5 and 96.1 mg/g, respectively. Overall, the advantages of excellent adsorption capacity and simple mineralization together with low cost make nano‐structured bone an attractive material for removal of Pb2+ from aqueous solution.

Current Development of Sorbents Derived From Plant and Animal Waste as Green Solution for Treating Polluted Aqueous Media

“…The utilization of pig bone as another sorbent material is interesting to be explored. Literature showed that pig bone-based sorbent initially modified via calcination and mineralization was effective for adsorbing Pb(II) metal ions [95]. The activation techniques could increase the adsorption capacity from 96.1 mg/g to 312.5 mg/g.…”

The, Mineralization of natural hydroxyapatite for high efficiency of Pb2+ ion removal in aqueous solution

“…From Langmuir isotherm equation, the maximum adsorption capacity Qm of Pb 2+ ions on m-HA was calculated as 574.1 (mg/g). The Qm of m-HA is much higher than that of n-HA without mineralization process as reported in the scientific papers [9,10,13]. In those studies, the Qm values are 9.52, 40, 96.1 (mg/g) for n-HA extracted from cow bone, Lisina natural ore and pig bone, respectively.…”

“…To compare the efficiency of Pb 2+ ion removal from aqueous solution of n-HA and m-HA materials, the adsorption experiments were performed according to the reference of the previous study [13]. The Pb 2+ ion solutions with concentration of 100 ppm and pH of 4.7 were obtained by dissolving Pb(NO3)2 salt in deionized water.…”

“…This was followed by a slight increase until 4 hours before achieving a saturated period of adsorption from 4 to 8 hours. In the study of Y. Zhou [13], n-HA was separated from pig bone by a different thermal processing which showed only 28.7% of lead ion adsorption within1 hour in the same conditions of initial concentration of lead ion solution and amount of adsorbent. Therefore, n-HA extracted in this work showed higher levels of lead removal than previous study.…”

Adsorción de iones de Pb2+ empleando CaCO3 biogénico en soluciones acuosas

“…La isoterma de adsorción obtenida se ajustó con la ecuación de Langmuir con un alto coeficiente de correlación (R 2 = 0.9997), lo que sugiere una alta afinidad entre la superficie de titanato y Pb 2+ (Sruamsiri & Ogawa, 2022). Yang Zhou et al (2017), prepararon hidroxiapatita nanoestructurada a partir de materiales de hueso de cerdo por mineralización. El hueso nanoestructurado obtenido fue mucho mejor en comparación con el hueso sin nanoestructura para eliminar Pb 2+ .…”