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۱Competitive adsorption of Cu2+ and Zn2+ ions from aqueous solutions by oxidized carbon nanotubes
اطلاعات انتشار: هفتمین کنگره ملی مهندسی شیمی، سال
تعداد صفحات: ۷
The individual and competitive adsorption capacities of Cu2+ and Zn2+ by nitric acid treated multiwalled carbon nanotubes (CNTs) were studied. The maximum sorption capacities calculated to single ion adsorption were 100% for Cu2+ and 91.4% for Zn2+ in the initial concentration 5 mg\l. The competitive adsorption studies showed that the affinity order of two metal ions adsorbed by CNTs were 90.4% for Cu2+ and 52.68% for Zn2+in the initial concentration 5 mg\l. Equilibrium time were studied for of single ion adsorption and of two metal ions adsorption by CNT 0.02 g at initial concentration 5 mg\l, this time was 60 min. The effects of solution pH, initial concentration, CNT dosage and temperature on the competitive adsorption of Cu and Zn ions were investigated.<\div>
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