Artículos de revistas
Adsorption Of Cu(ii), Zn(ii), Cd(ii), Hg(ii) And Pb(ii) From Aqueous Solutions On A 2-mercaptobenzimidazole-modified Silica Gel
Registro en:
Mikrochimica Acta. Springer-verlag, v. 102, n. 1-3, p. 107 - 115, 1990.
263672
10.1007/BF01244293
2-s2.0-34249956081
Autor
Moreira J.C.
Pavan L.C.
Gushikem Y.
Institución
Resumen
The chemically modified silica, obtained by reacting 2-mercaptobenz-imidazole with 3-chloropropyl silica gel, was used to adsorb Cu(II), Zn(II), Cd(II) and Pb(II) from aqueous solutions at various pH. Between pH 3-5, the order of selectivity was Hg(II) > Cd(II) ≫ Cu(II) ∼ Zn(II) ∼ Pb(II). Under batch conditions retentions of 100% were achieved for all metals except for Pb(II) where 93% was attained. Under column conditions recoveries of 100% were obtained for all metals. © 1990 Springer-Verlag. 102 1-3 107 115