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The effective recovery of trace heavy metals from their wastewaters is an important but challenging work. Here, a promising process of nano-adsorption coupled with flotation had been validated for the recovery of trace Cu2+ from its aqueous solution. Firstly, silica nanoparticles (SNPs) acted as an adsorbing carrier to adsorb Cu2+ (15mg/L). Subsequently, cetyl trimethyl ammonium bromide (CTAB) was...
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