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Technology Factsheet


Category: Waste Management > Waste Treatment > Absorption
Reference # : Model No :

SMET® is an inorganic sorbent based on copper sulfide. SMET-K, a composite version, is copper sulfide microparticles, chemically fixed on the granules of natural aluminosilicate. The porous support in the sorbent composition provides greater access to sorption sites that increases the capacity per unit weight of the sorbing agent and improves the kinetics of sorption. The copper sulphide recovers ions of antimony, mercury, arsenic, cadmium, cobalt and silver from the aqueous solutions. It can operate in solutions with salt content up to 500 g/dm3.

The most effective use is in a static mode (addition of sorbent into the solution, followed by stirring and separation). The recommended ratio is 10 kg of the sorbent per 1000 liters of solution.The required contact time is 2 hours. Efficiency of ion recovery is 70 – 98%.

In a dynamic mode, it is recommended to use SMET-K at a rate of 10 column volumes per hour with a sorbent layer thickness of 20 cm. The optimum ratio of height to diameter of the sorbent layer columns is 2.5 - 3.5.






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