Removal of cationic dye from aqueous solution by adsorption onto crosslinked poly(4-vinylpyridine/crotonic acid) and its N-oxide derivative |
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Authors: | Email author" target="_blank">Ramazan?Co?kunEmail author |
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Affiliation: | (1) Department of Chemistry, Faculty of Science and Arts, Bozok University, Yozgat, Turkey |
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Abstract: | In this study, crosslinked poly(4-vinylpyridine/crotonic acid) poly(4-VPy/CrA)] and its N-oxide derivative were synthesized
to compare the adsorption of cationic methylene blue (MB) dye on these materials. The adsorptive removal of MB from aqueous
solution onto adsorbents was studied by using column adsorption method. Experimental results showed that MB was removed more
effective by poly(4-VPy/CrA)–N-oxide than poly(4-VPy/CrA) resins. The percentage removal of MB increased with pH, and it was
observed that basic pH was favorable for the adsorption of MB. The adsorption capacity for poly(4-VPy/CrA)–N-oxide resin was
found to 19.96 mg/g. It was found that the adsorption isotherm of the MB-fitted Langmuir-type isotherm. For the adsorption
of MB, the pseudo-second-order chemical reaction kinetics provides the best correlation with the experimental data. Ten adsorption–desorption
cycles demonstrated that the resins were suitable for repeated use without considerable change in adsorption capacity. |
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