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Catalytic wet air oxidation of bisphenol A solution in a batch-recycle trickle-bed reactor over titanate nanotube-based catalysts

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Abstract

Catalytic wet air oxidation (CWAO) is classified as an advanced oxidation process, which proved to be highly efficient for the removal of emerging organic pollutant bisphenol A (BPA) from water. In this study, BPA was successfully removed in a batch-recycle trickle-bed reactor over bare titanate nanotube-based catalysts at very short space time of 0.6 min gCAT g−1. The as-prepared titanate nanotubes, which underwent heat treatment at 600 °C, showed high activity for the removal of aqueous BPA. Liquid-phase recycling (5- or 10-fold recycle) enabled complete BPA conversion already at 200 °C, together with high conversion of total organic carbon (TOC), i.e., 73 and 98 %, respectively. The catalyst was chemically stable in the given range of operating conditions for 189 h on stream.

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Acknowledgements

The authors gratefully acknowledge the financial support of the Ministry of Education, Science and Sport of the Republic of Slovenia through Research program no. P2-0150.

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Correspondence to Albin Pintar.

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Responsible editor: Angeles Blanco

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Kaplan, R., Erjavec, B., Senila, M. et al. Catalytic wet air oxidation of bisphenol A solution in a batch-recycle trickle-bed reactor over titanate nanotube-based catalysts. Environ Sci Pollut Res 21, 11313–11319 (2014). https://doi.org/10.1007/s11356-014-3042-1

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Keywords

  • Batch-recycle reactor
  • Bisphenol A
  • Catalytic wet air oxidation
  • Titanate nanotubes
  • TiO2
  • Trickle-bed reactor
  • Wastewater treatment