Evaluation of the methyl violet sorption capacity in waters with a bentonite based geopolymer material

J. A. López, A. M. Montao, C. P. González, L. Medina

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    Abstract

    In this study, bentonite geopolymer was used as a sorbent to remove methyl violet in aqueous solutions. Several parameters such as pH, sorbent dose and initial sorbate concentration were evaluated. The greater sorption effectiveness of bentonite geopolymer is observed at pH 2-3, and the greater sorption capacity of methyl violet by bentonite geopolymer occurs when the sorbent/sorbate ratio decreases. The study of sorption kinetics showed that the data fit the pseudo-second order model, where much of the sorption occurs during the first hour of contact, it was shown that the process prefers diffusion between pores. Sorption was adjusted to the isotherm of Langmuir, which indicated that the sorption is preferentially in monolayer. bentonite geopolymer proved to be an excellent candidate for removal of methyl violet in aqueous bodies.

    Original languageEnglish
    Article number012006
    JournalJournal of Physics: Conference Series
    Volume1587
    Issue number1
    DOIs
    StatePublished - 5 Aug 2020
    Event6th International Week of Science, Technology and Innovation, IWSTI 2019 - San Jose de Cucuta, Colombia
    Duration: 19 Nov 201922 Nov 2019

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    © 2020 Published under licence by IOP Publishing Ltd.

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