Adsorption of Chromium(VI) on Radiation Grafted N,N-dimethylaminoethylmethacrylate onto Polypropylene, from Aqueous Solutions

Guillermina Burillo; Juan Serrano-Gómez; Juan Bonifacio-Martínez

doi:10.29356/jmcs.v57i2.216

Adsorption of Chromium(VI) on Radiation Grafted N,N-dimethylaminoethylmethacrylate onto Polypropylene, from Aqueous Solutions

Authors

Guillermina Burillo Universidad Nacional Autónoma de México
Juan Serrano-Gómez Instituto Nacional de Investigaciones Nucleares
Juan Bonifacio-Martínez Instituto Nacional de Investigaciones Nucleares

DOI:

https://doi.org/10.29356/jmcs.v57i2.216

Keywords:

Radiation grafting, DMAEMA, adsorption, thermodynamics, chromium

Abstract

Polypropylene (PP) grafted with dimethylaminoethylmethacrylate (DMAEMA), was prepared by irradiation with a ⁶⁰Co γ source. The obtained PP-g-DMAEMA was used to study the Cr(VI) ion adsorption as a function of contact time, initial pH, initial concentration of metal ion and temperature. Chromium adsorption data on PP-g-DMAEMA at various initial concentration fit well the Freundlich and Langmuir isotherms. The maximum adsorption capacity (a_max) was found to be 0.3103 × 0^-4 mol g^-1. The thermodynamic parameters ΔH⁰, ΔG⁰ and ΔS⁰ were estimated showing the adsorption process to be exothermic and spontaneous.

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Author Biography

Guillermina Burillo, Universidad Nacional Autónoma de México

Instituto de Ciencias Nucleares, Departamento de Química

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Published

2017-10-12

Issue

Vol. 57 No. 2 (2013): Regular Issue

Section

Regular Articles

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