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Korean Chemical Engineering Research,
Vol.55, No.5, 685-689, 2017
Vol.55, No.5, 685-689, 2017
Examination of an Algerian Clay in the Retention of Zinc Ions Charged
We studied the removal of zinc ions from synthetic brackish water by an adsorption method using natural Algerian Bentonite (NAB). The effect of the main physico chemical parameters-contact time, pH, temperature, ionic strength, clay weight and initial metal ion concentrations on the removal of Zn+2- were investigated. The results showed that equilibrium was attained within 10 min of stirring time. The retention capacity of Zn+2 increased with the increase of pH, the adsorbent dose and ionic strength. A modelization study showed that the adsorption follows Langmuir isotherm, while its kinetics was pseudo-second-order. Based on the results, it was concluded that NAB, which is natural and available, could be used as an alternative for the removal of zinc from saline aqueous solutions.
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