ARTÍCULO
Competitive Adsorption of Heavy Metals from Aqueous Solution onto Oxidized Activated Carbon Fiber
Maria Selene Berber-Mendoza & Jesús Ivan Martínez-Costa &
Roberto Leyva-Ramos & Hector Javier Amezquita Garcia &
Nahúm Andrés Medellín Castillo
Water Air Soil Pollut (2018) 229: 257
https://doi.org/10.1007/s11270-018-3906-y, 2018.
ABSTRACT:
Abstract In this study, the competitive adsorption of Ni(II)–Pb(II) and Ni(II)–Zn(II) on oxidized activated carbon fiber (ACF-Ox) from aqueous solutions was studied. The experimental competitive adsorption data were interpreted by the following multicomponent adsorption isotherms: non-modified, extended, and modified Langmuir; non-modified and modified Redlich- Peterson; extended Freundlich; and Sheindorf-Rebuhn- Sheintuch. The extended Freundlich multicomponent isotherm best fitted the adsorption data for both systems Ni(II)–Pb(II) and Ni(II)–Zn(II) onto ACF-Ox. The single metal adsorption on ACF-Ox showed that the Ni(II) adsorption capacity was 1.12 times greater than that of Zn(II); however, in the competitive adsorption, the Zn(II) presented an intense antagonismto the adsorption of Ni(II) and Ni(II) to Zn(II) too.