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The influence of inorganic anions (NO3-, I − , Br − , Cl − , SO42-, and S2O32-) and of divalent cations (Ca 2+ and Mg 2+ ) on the zeta potential and on the isoelectric point of α-alumina in aqueous medium has been studied. The effect of the anions is highly ion specific even at salt concentrations as low as 5×10 −4 M. This unexpected finding is in line...
A systematic study on the influence of functionality on adsorption of benzoate and phthalate at α-alumina–water interface was investigated. Kinetics of adsorption of benzoate and phthalate on α-alumina surfaces were performed at constant ionic strength, I=5×10 −4 moldm −3 and pH 5 at 25, 30 and 40°C. Kinetics results show that the rate of adsorption of phthalate is ≈2 times more than...
Kinetics of adsorption of benzoate and salicylate onto the natural hematite surfaces have been carried out at pH 5 and at a fixed ionic strength (I=1×10 −4 moldm −3 ). The state of equilibrium was attained at 144 and 70h for benzoate and salicylate, respectively. Adsorption behaviour of benzoate and salicylate onto the natural hematite was studied over a wide range of pH at a fixed...
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