Arsenic(V) removal using an amine-doped acrylic ion exchange fiber: Kinetic, equilibrium, and regeneration studies

Chang Gu Lee, Pedro J.J. Alvarez, Aram Nam, Seong Jik Park, Taegu Do, Ung Su Choi, Sang Hyup Lee

    Research output: Contribution to journalArticlepeer-review

    182 Citations (Scopus)

    Abstract

    This study investigates As(V) removal from aqueous solutions using a novel amine-doped acrylic ion exchange fiber. The amine doping reaction was confirmed using FT-IR, and the surface of the fiber was characterized using FEG-SEM. The synthesis process was completed within 60 min using an AlCl3·6H2O catalyst at 100 °C, and the resulting in a fiber with an ion exchange capacity of 7.5 meq/g. The removal efficiency of the A-60 fiber was affected by the solution pH, and the efficiency was optimum at pH 3.04. As(V) adsorption on the fiber was rapid in the first 20 min and reached equilibrium in 60 min. As(V) removal followed pseudo-first-order kinetics, and the Redlich-Peterson adsorption isotherm model provided the best fit of the equilibrium data. The fiber has an As(V) adsorption capacity (qe) of 205.32 ± 3.57 mg/g, which is considerably higher than literature values and commercial adsorbents. The removal efficiency of the fiber was above 83% of the initial value after nine regeneration cycles.

    Original languageEnglish
    Pages (from-to)223-229
    Number of pages7
    JournalJournal of hazardous materials
    Volume325
    DOIs
    Publication statusPublished - 2017 Mar 5

    Bibliographical note

    Publisher Copyright:
    © 2016 Elsevier B.V.

    Keywords

    • Adsorption
    • Amine group
    • Arsenic removal
    • Ion exchange fiber
    • Regeneration

    ASJC Scopus subject areas

    • Environmental Engineering
    • Environmental Chemistry
    • Waste Management and Disposal
    • Pollution
    • Health, Toxicology and Mutagenesis

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