Understanding PFAS degradation pathways through combined adsorption and oxidative processes in water and wastewater treatment

• Grant number: 24/09957-0
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: October 01, 2024
• End date: January 31, 2028
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Raquel Fernandes Pupo Nogueira
• Grantee: Lukas Gomes Gadelha Vieira Santos
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil

Abstract

Contamination by per- and polyfluoroalkyl substances (PFAS) in water and wastewater presents significant environmental and health concerns due to their persistence and toxicity. Conventional treatment methods have limitations in effectively removing PFAS, leading to the exploration of hybrid techniques. Among hybrid approaches, those combining selective adsorption materials and advanced oxidative processes, such as Fenton and photo-Fenton reactions, can result in high removal efficiency. Biochar demonstrates a high affinity for PFAS, facilitating their removal, while advanced oxidative processes promote the degradation of PFAS. Developing and validating analytical methods for the quantification of total PFAS, such as fluoride analysis by potentiometry or monitoring target substance peaks by high-performance liquid chromatography, is essential for monitoring treatment efficiency. Integrating these strategies aims to comprehensively address the challenges of PFAS contamination. By exploring hybrid techniques, the project seeks to advance PFAS elimination strategies and contribute to environmental quality improvement. The project's focus on PFAS degradation and quantification aligns with the urgent need for innovative solutions to address PFAS contamination worldwide. (AU)