Abstract

This study focuses on the removal of three model compounds, classified as emerging persistent organic pollutants (Em-POPs), from water using a modified version of natural Australian zeolite. Following a series of subsequent treatments and vacuum deposition of graphene oxide (GO), both chemical and physical properties of the adsorbent were characterized. The GO-coated zeolite was tested for the removal of methylene blue (MB), disperse blue 26 (DB26), and sodium fluorescein (NaFn). Results show excellent removal capability for MB and DB26 dyes and decent removal for NaFn when compared to commercially available products such as granular activated carbon. Regeneration of the adsorbent showed virtually no loss in adsorptive performance after two cycles, with MB and DB26.

Highlights

  • Natural clinoptilolite-rich zeolite was successfully enhanced with graphene oxide to enhance surface properties.

  • The vacuum graphene oxide coated zeolite was a successful method for deposition.

  • Adsorption performance was improved by modification of the adsorbent for select dyes.

  • The vacuum graphene oxide coated zeolite is competitive with other adsorbent materials on the market.

  • Thermal stability of the precursor material is preserved throughout the treatment process.

This content is only available as a PDF.