Phosphorus binding clay

The Regional Estuaries Initiative is investigating the effectiveness of a newly developed clay that binds phosphorus making it unavailable for algae growth.

As part of the project, scientists are running several trials across the Peel-Harvey and Vasse-Wonnerup catchments in parallel with detailed laboratory testing. Trials in the Vasse-Wonnerup  catchment are being carried out in partnership with Revitalising Geographe Waterways.

The aim is to:

  • improve the clay manufacturing process
  • investigate the effectiveness of clay treatment in different environments
  • undertake a detailed risk assessment for large-scale clay application.

Trials have been completed in the Lower Vasse River (summer 2017–18 and summer 2018–19) and Punrak Drain (October 2017), with the next trial to be conducted in the Serpentine River in summer 2019/2020.

More information.