Adsorption Equilibria of Cu~(2+), Zn~(2+), and Cd~(2+) on EDTA-Functionalized Silica Spheres
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60
摘要：
Ethylenediaminetetraaceticcid (EDTA)unctionalizedilicapheres weresedoemoveetal ionsromqueousolutions.hedsorption kineticsfu~(2+), Zn~(2+),ndd~(2+) (60g-L~(-1), pH 5.5) wereittedohe pseudosecondrderodel.dsorption equilibria wereeached within 20in, indicatinghathemisorptionayehe limitingtep inhedsorption process.dsorption isotherms werenalyzed with nonlinearodelsyonsideringhe ERRSQ. errorunctionndhe determinationoefficient~2.he data withonoionolutions (10g·L~(-1)o 300g·L~(-1)) wereested with Langmuir,reundlich,ndedlich—Peterson isothermodels.heestit wasound withhe Langmuirodel/andaximumdsorptionapacitiesollowedherder:u >Zn >Cd .reakthroughurves werebtainedsingilledolumns.hedsorbed ions were quantitativelyecoveredn elution withydrogenhloride (0.10).fterhreedsorption—recoveryycles,heetal ionsouldtilleecoveredlmost quantitatively, which demonstrateshe good performancefhe EDTA-funetionalizedilicapheres.
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DOI：
10.1021/je3053364
被引量：
年份：
2013
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