Removal of bisphenol a micropollutants released from plastic waste using Pt-ZnO photocatalyst

Environ Geochem Health. 2024 Jul 26;46(9):335. doi: 10.1007/s10653-024-02091-3.

Abstract

Plastic pollution is becoming increasingly severe and is attracting global attention. One of its consequences is the recent discovery of micropollutant discharge into water, with Bisphenol A (BA-MP) being a typical example. This study utilizes an advanced oxidation process based on Pt-doped ZnO photocatalyst to remove BA-MP. Health concerns related to the release of BA-MP from plastic waste are discussed. Besides, the results of the photodegradation experiment show that the Pt-ZnO photocatalyst can remove 94.1% of BA-MP within 60 min when exposed to solar light. Moreover, after five reuse cycles, Pt-ZnO retains a high BA-MP removal efficiency of 71.2%, and its structure remains largely unchanged compared to the original material. The removal efficiency of BA-MP leaching from plastic waste was measured at 98.8%, confirming the suitability of Pt-ZnO for the treatment of micropollutants. Furthermore, this study also highlights the prospects and challenges of using Pt-ZnO for the treatment of micropollutants discharged from plastic waste.

Keywords: Bisphenol A; Micropollutants; Plastic waste; Wastewater; ZnO photocatalyst.

MeSH terms

  • Benzhydryl Compounds* / chemistry
  • Catalysis
  • Phenols* / chemistry
  • Photolysis*
  • Plastics* / chemistry
  • Platinum* / chemistry
  • Water Pollutants, Chemical* / chemistry
  • Zinc Oxide* / chemistry

Substances

  • Benzhydryl Compounds
  • bisphenol A
  • Zinc Oxide
  • Phenols
  • Plastics
  • Water Pollutants, Chemical
  • Platinum