Bentonite products provide versatile applications for waste water treatment and purification.

Bentonite’s adsorption/absorption properties are very useful for wastewater purification. Common environmental directives recommend low permeability soils, which naturally should ontain bentonite, as a sealing material in the construction and rehabilitation of landfills to ensure the protection of groundwater from the pollutants. Bentonite is the active protective layer of geosynthetic clay liners.

The existing smectite clay-minerals in the bentonite (i.e. montmorillonite) generate a huge reactive surface when disperged. The clay minerals´ weak negative charge enables it to adsorb changeable cationic components.