Adsorption kinetics, isotherms, and thermodynamic studies for the adsorption of Pb and Hg metal ions from aqueous medium using Ti(IV) iodovanadate cation exchanger

Naushad, M.*; Alothman, Z. A.*; Awual, M. R.; Alam, M. M.*; Eldesoky, G. E.*

Ionics, 21(8), p.2237 - 2245, 2015/08

https://doi.org/10.1007/s11581-015-1401-7

In the current study, Ti(IV) iodovanadate cation exchanger (TIV) was synthesized and applied for the removal of Pb and Hg metal ions from the aqueous medium. The adsorption studies were performed by the batch techniques and adsorption parameters viz. contact time, pH, initial metal ion concentration, and temperature were also investigated. The optimum adsorption of Pb and Hg were observed at pH6. The pseudo-second order equation represented the adsorption kinetics with high correlation coefficient. Langmuir model showed the best fitting to the isotherm equilibrium data, with a maximum adsorption capacity of 18.8 mg/g for Pb and 17.2 mg/g for Hg.