2003
DOI: 10.1260/026361703322404368
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A Novel Dye-Doped Sol–Gel Silica Sorbent for the Removal of Cobalt

Abstract: ABSTRACT:A TAR [4-(2-thiazolylazo)resorcinol] doped sol-gel silica sorbent (red colour, porous, stable, hard, non-swelling) was prepared, characterized and investigated for the removal of Co(II) from aqueous solutions. The kinetics, adsorption isotherm, equilibration time and effect of pH on such removal were studied to optimize the conditions necessary for large-scale application. Rapid equilibration was observed with adsorption equilibria being attained within 10 min. The adsorption of cobalt ions onto the p… Show more

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