Applied Catalysis2022，Vol.30313.DOI:10.1016/j.apcatb.2021.120884

Peroxide activation by microbially synthesized sulfidated iron: Comparison against abiotic iron-based materials in terms of treatment efficiency and oxidative degradation pathway

Yang, Bowen Suh, Sae-In Lee, Jeonggil Ryoo, Hwa-Soo Ham, So-Young Kim, Jaesung Ko, Young-Jin Woo, Heesoo Choi, Jaemin Oh, Hyung-Suk Lee, Sang-Hoon Park, Hee-Deung Kwon, Man Jae Lee, Hongshin Lee, Jaesang
Applied Catalysis2022，Vol.30313.DOI:10.1016/j.apcatb.2021.120884
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  • NSTL
  • Elsevier

Peroxide activation by microbially synthesized sulfidated iron: Comparison against abiotic iron-based materials in terms of treatment efficiency and oxidative degradation pathway

Yang, Bowen 1Suh, Sae-In 1Lee, Jeonggil 1Ryoo, Hwa-Soo 1Ham, So-Young 1Kim, Jaesung 1Ko, Young-Jin 2Woo, Heesoo 2Choi, Jaemin 1Oh, Hyung-Suk 2Lee, Sang-Hoon 1Park, Hee-Deung 1Kwon, Man Jae 1Lee, Hongshin 1Lee, Jaesang1
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作者信息

  • 1. Korea Univ
  • 2. Korea Inst Sci & Technol
  • 折叠

Abstract

This study demonstrated the application of biogenic sulfidated iron (B-FeS), produced via anaerobic digestion of Desulfovibrio desulfuricans using sulfate as the terminal electron acceptor, for peroxide activation. B-FeS was assessed against chemically prepared zerovalent and sulfidated iron (ferrous sulfide and pyrite) with respect to their ability to activate peroxydisulfate (PDS) and H2O2. Regardless of the peroxide type, B-FeS outperformed benchmark iron activators in treating 4-chlorophenol due to its resistance to iron corrosion and the high content of reduced sulfur. The roles of oxidizing radicals were confirmed based on the effects of alcohol-based quenchers, multi-activity assessment, electron paramagnetic resonance spectral features, and product analysis. The pHdependent efficiency of sulfoxide-to-sulfone conversion suggested that high-valent iron species acted as the secondary oxidant in all iron/peroxide systems, and the contribution was more pronounced when PDS and B-FeS were used. Microbial sulfidation as a catalyst regeneration strategy recovered the peroxide activation capacity of oxidized B-FeS.

Key words

Biogenic sulfidated iron/Sulfate-reducing bacteria/Peroxide activation/Sulfate radical/High-valent iron/ZERO-VALENT IRON/ZEROVALENT IRON/WATER-TREATMENT/SPECTROPHOTOMETRIC DETERMINATION/2/4-DICHLOROPHENOXYACETIC ACID/PEROXYMONOSULFATE ACTIVATION/CONTAINING MINERALS/OXIDIZING CAPACITY/HYDROXYL RADICALS/RATE CONSTANTS

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量6
参考文献量61
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