A Comparative Study for Removal of Perfluorooctanoic Acid Using Three Kinds of N-polymer Functionalized Calotropis Gigantea Fiber

Using NaClO 2 pretreated Calotropis gigantea fiber (CGF) as the bio-template, three N-polymer functionalized fibers were fabricated by in-situ growth of polydopamine (PDA), polyaniline (PAN) and poly(m-phenylenediamine) (PmPD) along the fiber. The resulting adsorbents were applied to remove perfluor...

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Bibliographic Details
Published inJournal of natural fibers Vol. 19; no. 6; pp. 2119 - 2128
Main Authors Niu, Bihui, Yu, Min, Sun, Changduo, Wang, Luhan, Niu, Yanning, Huang, Huimin, Zheng, Yian
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 03.06.2022
Taylor & Francis Ltd
Taylor & Francis Group
Subjects
Adsorbents
Adsorption
Calotropis gigantea fiber
Comparative studies
Fibers
Hydrogen bonds
Hydrophobicity
N-polymer
Perfluoro compounds
Perfluoroalkyl & polyfluoroalkyl substances
Perfluorochemicals
Perfluorooctanoic acid
Phenylenediamine
Polyanilines
Polymers
regeneration
Removal
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Summary:Using NaClO 2 pretreated Calotropis gigantea fiber (CGF) as the bio-template, three N-polymer functionalized fibers were fabricated by in-situ growth of polydopamine (PDA), polyaniline (PAN) and poly(m-phenylenediamine) (PmPD) along the fiber. The resulting adsorbents were applied to remove perfluorooctanoic acid (PFOA) from water. The adsorption process reached equilibrium within 3 h, and the maximum adsorption capacity was 207.3-232.8 mg/g. Electrostatic attraction, hydrogen bond and hydrophobic interaction participated in the adsorption process. Three adsorbents could be well regenerated, and the recovered adsorbents maintained higher adsorption percentage (≥80%) after five adsorption-desorption cycles. Among three adsorbents, PAN-CGF displayed remarkable adsorption performance on perfluorochemicals removal.
ISSN:1544-0478
1544-046X
DOI:10.1080/15440478.2020.1798848