Mining and Engineering


Bentonite Clay has been used as a low cost adsorbent to assist with cost effective removal of metals and organic compounds from wastewaters.

The calcium bentonite clays have a high capacity to bind metal ions dissolved in solution. This adsorption, the binding of chemicals to clay surfaces, is a rapid process and the binding is strong.

Once these metals are bound to bentonite clay they can be rapidly separated from water by removing the clay.

Bentonite clay can then be flocculated by adding special flocculating chemicals; these cause the clay to form large aggregates that can be easily removed form water.

Metal ions including copper, zinc, lead, mercury and cadmium bind strongly to the charged surfaces of bentonite clay and can be removed from the water as metal/clay complex.

Similar process occurs with a range of organic chemicals, which also bind strongly onto the bentonite clay surface. These include industrial dyes, solvents, herbicides, pesticides and other toxins.

Watheroo Bentonite has typical world renowned characteristics of a high quality calcium benotnite which are used in several mining and engineering functions including but not limited to:

  • Dam Sealing and Water Storage (including tailings dam sealing and evaporation ponds)
  • Effuent treatment
  • Electrical and Lightening Earthing (ANODE Mix "AM-B1")
  • Reative Barrier Technologies including landfill containment.