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Filter developed by VTT helps recover 80 percent of gold in mobile phone scrap
Date:4/10/2014

philic particles by blowing air into sludge containing both types of particles. Hydrophobic particles are picked up by air bubbles and float to the top of the sludge as froth that can be skimmed off mechanically.

Liquid-liquid extraction

Liquid-liquid extraction is a method that extracts metals at aqueous interface selectively into another organic interface immiscible with water. This method, widely used in industrial processes, enables selective extraction of precious and heavy metals from water. The metal solution concentrated into an organic interface is thus extracted in purer form for further processing.


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Contact: Olli Salmi
olli.salmi@vtt.fi
358-207-225-216
VTT Technical Research Centre of Finland
Source:Eurekalert

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