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Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.19 [2012] >
IJCT Vol.19(3) [May 2012] >
| Title: | Adsorption of MoO42- ions on Fe-treated tri-calcium phosphate |
| Authors: | Gómez, J Serrano
Martínez, J Bonifacio
Reyes, M C López |
| Keywords: | Adsorption isotherms
Calcium phosphate
Kinetics
Molybdate adsorption
Thermodynamic parameters |
| Issue Date: | May-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The Fe-treated calcium phosphate (Fe-TPO4)
has been prepared with FeCl3 aqueous solution. The sorption of 99MoO42-
ions from aqueous solution using Fe-TPO4 as adsorbent is
investigated by batch experiments. Experiments have been performed as a
function of shaking time, pH, solute
concentration and temperature and the experimental rate data are tested with
the pseudo-second-order rate model. The adsorption data as a function of
molybdate concentration obey the Freundlich isotherm. Thermodynamic parameters  H0, S0 and G0 have been calculated with data of
temperature studies. The positive value of H0 indicates that the adsorption of
MoO42- ions on Fe-TPO4 is an endothermic
process. |
| Page(s): | 167-172 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.19(3) [May 2012]
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