GoPur® 3000

Organic polymer compound for separating uranium from mining waters

Problem

Contaminated uranium mining:

  • Leachate of tailings
  • Flood water from pits
  • Seepage of mine dumps

Solution

Organic polymer compound GoPur® 3000:

  • Use as flocculant
  • Complete bonding of uranium
  • GoPur® recycling

Method

GoPur3000_schema-separation

Description of the method

A characteristic feature of this new process is the combination of known methods for the precipitation of the radium and arsenic compounds, along with the uranium separation using the polymer aggregate GoPur® 3000. The process sequence is divided into the combined separation of the radioactive water components radium and uranium and the separate precipitation of toxic arsenic.

A barium sulfate precipitate is first initiated in weakly acidic water by the addition of a soluble barium compound. Radium compounds are bound by co-precipitation. The subsequent flocculation with the polymer aggregate GoPur® 3000 is performed without separation from the sulfate precipitate.

The specific chemical structure of the polymer aggregate ensures, besides the highly effective complex binding of the uranium, an intensive flocculation through molecular aggregation. The radioactive flocs are separated by sedimentation. In a second stage, arsenic is precipitated in the pre-purified water as iron arsenate and also separated by sedimentation. The polymer aggregate can be recovered by simple dissolving and washing processes of the radioactive sludge.

GoPur3000-komplexbildung_engl

Scheme of combined process for separation of radioactive and toxic compounds from mining water

gopur3000-schema-mit-abtrennung-toxischer-stoffe

Advantages at a glance

  • Reliable method
  • Low operating costs
  • Simple process management
  • High separation efficiency