Effect of phosphate enrichment on the metal adsorption properties of hydrous iron oxide was investigated in aqueous electrolyte solutions. Phosphate enrichment caused progressive decrease in the point of zero charge of the oxide which resulted an increase in its adsorption capacity towards Cu(II), Cd(II), and Ni(II) ions. Mechanism of adsorption of these metal ions was monitored from the alkalimetric titrations and adsorption measurements performed simultaneously in the same medium Both sets of experiments indicated that the affinity of these metals for the phosphate-free and phosphate-enriched surfaces followed the order, i.e. Cu(II) > Cd(II) > Ni(II).
S F ARSHA ,KAUSAR IQBAL ,KHALIDA AKHTAR ,IKRAM UL HAQ ,
You can use below filter to find your desired issue