Hydrogen Peroxide Activation with Sulfidated Zero-Valent Iron for Synchronous Removal of Cr(VI) and BPA
نویسندگان
چکیده
In this work, the synchronous removal of Cr(VI) and bisphenol A (BPA) in a heterogeneous Fenton process with sulfidated nanoscale zero-valent iron (S-nZVI) as reductant catalyst was systematically evaluated. Compared to other systems including S-nZVI or H2O2 alone, simultaneous BPA degradation could be achieved S-nZVI/H2O2 system at an optimum pH 3. It was, interestingly, found that 7.8% 98.2% were removed within 60 min presence whereas, correspondingly, 96.9% eliminated system. Specifically, humic acid (HA) H2PO4− inhibited deterioration but posed no significant effect on removal. NO3− had slight lifting Cr(VI), while HCO3− showed relatively weak prohibition. Experiments EPR radical probe tests also provide direct evidence hydroxyl radicals monitored system, which not only degraded reduction Cr(VI). ignored FeS accelerated Fe0 corrosion release Fe2+. In, addition, Fe0, Fe2+ S2+ react most produced Cr(III) co-precipitated form CrxFe1−xOOH film. The study confirmed it feasible for remove synchronously organic pollutants heavy metal.
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ژورنال
عنوان ژورنال: Catalysts
سال: 2022
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal12030252