Hydroxyapatite composite from natural materials prepared by hydrothermal processing

Q1 Social Sciences

South African Journal of Chemical Engineering Pub Date : 2025-02-19 DOI:10.1016/j.sajce.2025.02.006

Krzysztof Kogut , Krzysztof Kasprzyk , Ewa Zawadzka , Joanna Warycha

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Abstract

This paper presents a hydrothermal method of obtaining hydroxyapatite (HAp) from natural material – shells of shellfish.

The method of deriving hydroxyapatite from shellfish shells is based on the interaction between phosphate compounds and shells, which are made of calcium carbonate (aragonite).

X-Ray, SEM and EDS analysis, electrokinetic potential and electric conductivity measurements, were used to characterize the properties of the material.

X-Ray analysis confirmed that the hydroxyapatite was created in the process of synthesis of calcium compounds.

The obtained composite was composed of 1 µm grains forming a microporous structure with an extensive inner surface.

The zeta potential for the obtained hydroxyapatite composite at pH 7.00 was -7.5 mV and is similar to the potential of the healthy bone.

The chemical stability analysis of the HAp material was carried out based on the changes in the pH of the simulated body fluid. During the seventeen days of tests the pH was almost unchanged. Electrical conductivity of the distilled water

at a temperature of 36.5°C was about 0.65 mS.

Based on the kinetics examinations it will be possible to determine the composite suitability for its application as an implant material in medicine.

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来源期刊

South African Journal of Chemical Engineering Social Sciences-Education

CiteScore

8.40

自引率

0.00%

发文量

100

审稿时长

33 weeks

期刊介绍： The journal has a particular interest in publishing papers on the unique issues facing chemical engineering taking place in countries that are rich in resources but face specific technical and societal challenges, which require detailed knowledge of local conditions to address. Core topic areas are: Environmental process engineering • treatment and handling of waste and pollutants • the abatement of pollution, environmental process control • cleaner technologies • waste minimization • environmental chemical engineering • water treatment Reaction Engineering • modelling and simulation of reactors • transport phenomena within reacting systems • fluidization technology • reactor design Separation technologies • classic separations • novel separations Process and materials synthesis • novel synthesis of materials or processes, including but not limited to nanotechnology, ceramics, etc. Metallurgical process engineering and coal technology • novel developments related to the minerals beneficiation industry • coal technology Chemical engineering education • guides to good practice • novel approaches to learning • education beyond university.