Abstract
The adsorption of Zn2+ ions on amorphous Fe(OH)3 and α-Fe2O3, as a function of pH, has been investigated. In the pH region corresponding to the formation of positively charged Zn-hydroxy complexes, an abrupt increase in adsorption was observed. The influence of EDTA and glycine on the adsorption of Zn2+ by α-Fe2O3 has also been investigated. Strong suppression of the adsorption of Zn2+ was observed for high [EDTA or Gly]/[Zn2+] concentration ratios. The results of the adsorption of Zn2+ in the presence of an organic ligand were explained by the formation of Zn-EDTA or Zn-glycine complexes and also by the occupation of adsorption sites by the free organic ligand.
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Musić, S., Ristic, M. Adsorption of zinc(II) on hydrous iron oxides. Journal of Radioanalytical and Nuclear Chemistry, Articles 162, 351–362 (1992). https://doi.org/10.1007/BF02035395
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DOI: https://doi.org/10.1007/BF02035395