Sustainable and Green Synthesis of Nano Zero-Valent Iron for Hexavalent Chromium Adsorption.

ABSTRACT: This research aimed to assess the potential of Ethiopian coffee extracts in synthesizing nano zerovalent iron (nZVI) from ferric chloride hexahydrate (FeCl₃·6H₂O) and to explore their ability to adsorb hexavalent chromium (Cr (VI)) from solution. The resulting nano zerovalent iron (nZVI) was analyzed using transmission electron microscopy (TEM) and Fourier-transform infrared (FTIR) spectroscopy. The particle sizes of nZVI derived from Wenbera (W-nZVI) and Sidama (S-nZVI) coffee extracts were below 10 nm. Cr (VI) adsorption to W-nZVI and S-nZVI were 91 and 94%, respectively, achieved at a pH of 3, an initial Cr (VI) concentration of 10 mg/L, and a temperature of 30 °C. The results confirmed that both W-nZVI and S-nZVI adsorbed significant amounts of Cr (VI). Adsorption

SUBMITTER: Dinsa M 

PROVIDER: S-EPMC12268441 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature