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The uptake of Cu(II) on graphene oxide (GO) by an adsorption process as a function of solution pH and ionic strength in the absence and presence of humic acid (HA) or fulvic acid (FA) was studied by using a batch technique. The results indicated that the uptake of Cu(II) on GO was clearly dependent on solution pH but independent on ionic strength. A positive effect of HA or FA on Cu(II) uptake on...
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