Ball milled Fe0 @FeS hybrids coupled with peroxydisulfate for Cr(VI) and phenol removal: Novel surface reduction and activation mechanisms

The Science of the Total Environment
Kun WangHongwen Sun

Abstract

Fe0@FeS hybrids were synthesized by ball milling and applied to couple with peroxydisulfate (PS) for Cr(VI) reduction and phenol oxidation. A synergistic effect between Fe0 and FeS for contaminants removal was found in experimental results. The removal rates of Cr(VI) and phenol by ball milled Fe0@FeS hybrids coupled with PS were 97% and 88.7% (initial concentrations of Cr(VI) and phenol are 35 and 40 mg/L, respectively), indicating a successful treatment method for industrial wastewater containing metals, metalloids and organic pollutants. Concentrations of Cr(VI) lower than 45 mg/L could promote the degradation of phenol, while high concentration of Cr(VI) inhibited phenol degradation. Acidic conditions were beneficial to Cr(VI) and phenol removal. Scan electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) analysis suggested that surface morphology and element valence of ball milled Fe0@FeS hybrids changed after reaction. Radicals quenching experiment and EPR (electron paramagnetic resonance) results illustrated that SO4•- and HO• were major free radical species for phenol degradation. Fe(II) quenching experiment revealed that surface-bound Fe(II) instead of diss...Continue Reading

References

May 1, 1991·Environmental Health Perspectives·C D Palmer, P R Wittbrodt
May 26, 2005·Journal of Colloid and Interface Science·M Ahmaruzzaman, D K Sharma
Feb 22, 2007·Environmental Science & Technology·Bruce A ManningSushil Raj Kanel
Jun 25, 2008·Journal of Hazardous Materials·Kaili LinXuecheng Xu
Jan 17, 2016·Journal of Colloid and Interface Science·Mădălina I DuineaPaul Chiriță
Jun 21, 2016·Water Research·Jiangkun DuDavid Werner
Apr 14, 2017·The Science of the Total Environment·Yanyan GongEddy Y Zeng
Sep 22, 2017·Water Research·Leonidas BekrisDionissios Mantzavinos
Mar 7, 2020·Environmental Science & Technology·Dong ChengAo Qian

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