Valorizing Tea Waste: Green Synthesis of Iron Nanoparticles for Efficient Dye Removal from Water.

ABSTRACT: This study explores the valorization of tea leaf waste by extracting polyphenols through reflux extraction, subsequently using them to synthesize zero-valent iron nanoparticles (nZVI). The in situ generated nanoparticles, when combined with fixed amounts of hydrogen peroxide, facilitated the removal of various dyes (methylene blue, methyl orange, and orange G) via a hetero-catalytic Fenton process. The iron nanoparticles were thoroughly characterized by gas adsorption of N₂ at 77 K, scanning electron microscopy (SEM), Transmission Electron Microscopy (TEM), FT-IR spectroscopy, X-ray diffraction (XRD), and thermal analysis, including thermogravimetric analysis (TG) and temperature-programmed reduction (TPR). A statistical design of experiments and response surface methodology wer

SUBMITTER: Rodriguez-Rasero C 

PROVIDER: S-EPMC11429485 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature