In a groundbreaking study published in the ‘European Journal of Materials Science and Engineering,’ researchers from the Federal Polytechnic, Ado – Ekiti, Nigeria, have explored the potential of utilizing bio-wastes in the production of bioactive ceramics for biomedical applications. Lead author Seun S. Owoeye and his team have developed a novel formulation that completely replaces traditional raw materials with rice husk ash (RHA) and eggshell ash (EGA), demonstrating a sustainable approach to bioactive glass production.
The researchers crafted a bio-ceramic with a composition of 45% RHA, 24.5% EGA, 24.5% sodium oxide (Na2O), and 6% phosphorus pentoxide (P2O5). The innovative use of biogenic materials not only addresses environmental concerns associated with waste disposal but also enhances the properties of the resulting bioactive glass. “By repurposing agricultural and food industry waste, we are not just reducing waste but creating valuable materials that have significant applications in bone repair,” Owoeye explained.
The process involved powder metallurgy, where the mixed materials were compacted, sintered at 1000°C, and subsequently cooled. The final product exhibited a bulk density of 1.02 g/cm3 and a remarkable porosity of 62%. Notably, when immersed in simulated body fluid, the bio-ceramic demonstrated increasing deposits of carbonate-hydroxyapatite, a critical indicator of bioactivity. This suggests that the material could effectively promote bone regeneration, opening doors for its application in medical implants and reconstructive surgery.
The commercial implications of this research are substantial, particularly for the construction sector, which increasingly seeks sustainable materials. The potential for integrating such bioactive ceramics into construction practices, particularly in projects aimed at healthcare facilities or rehabilitation centers, could not only enhance structural integrity but also contribute to the overall healing environment.
Owoeye’s research represents a significant step towards a circular economy within the materials science field. “Our findings could inspire further innovations in the use of waste materials across various industries, ultimately leading to more eco-friendly construction practices,” he noted.
As the construction industry continues to grapple with sustainability challenges, the insights from this study could pave the way for a new generation of bioactive materials that not only serve functional purposes but also align with environmental stewardship. The potential for these bio-waste-based ceramics to impact both the biomedical and construction sectors is a testament to the ingenuity of researchers like Owoeye and his team at the Federal Polytechnic, Ado – Ekiti.
This research underscores the importance of interdisciplinary approaches in solving contemporary challenges, highlighting how materials science can contribute to both health and infrastructure.
