Keratin-derived sorbents for efficient removal of copper ions from aqueous solutions

Abstract

Keratin, prized for its environmentally friendly nature, unique chemical composition, and binding ability, has emerged as a promising adsorbent for untreated industrial wastewater. In this study, we developed a composite derived from hydrolyzed keratin and diallylamine. We assessed the adsorption performance of this composite against metal wastewater at varying temperatures, processing time, and pH values. The keratin-derived composites exhibited an exceptional efficiency in removing copper ions, with an adsorption capacity of 337.9 mg g⁻¹. Furthermore, keratin composites post copper ion adsorption demonstrated inhibitory activity against bacterial growth, suggesting their potential for reuse as an antibacterial material. In conclusion, this study offers an effective method for repurposing keratin waste. The developed keratin-derived sorbents exhibit the potential in wastewater treatment. Our study provides a dual functional method with potential contribution to sustainable and eco-friendly industry practice.