Effective Removing of Remazol Black B by the Polyacrylamide Cryogels Modified with Polyethyleneimine

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dc.authoridGUN GOK, Zehra/0000-0001-6426-0395
dc.contributor.authorGun Gok, Zehra
dc.contributor.authorInal, Murat
dc.date.accessioned2025-01-21T16:38:04Z
dc.date.available2025-01-21T16:38:04Z
dc.date.issued2022
dc.departmentKırıkkale Üniversitesi
dc.description.abstractIn this study, modified polyacrylamide (PAAm) cryogels with high dye holding capacity were synthesized with an easily and cheaply process and adsorption of Remazol Black B (RBB) with the synthesized materials was investigated. Firstly, PAAm cryogels were synthesized with free radical cryo-copolymerization method and they were modified with Hofmann reaction to form amine groups in the structure of the cyrogels. Then, to increase the removal efficiency of cryogels, polyethylenimine (PEI) molecules were crosslinked onto the cryogels via NH2 groups present in the PAAm gels modified by the Hofmann reaction. The original and modified cryogels were characterized with fourier transformed infrared spectroscopy, C-13 nuclear magnetic resonance spectroscopy, scanning electron microscopy and thermogravimetric analysis. The point of zero charge (pH(pzc)) of the modified cryogels was found to be 7.13 and RBB removing capabilities of PEI-modified PAAm cryogels were investigated at pH between 2 and 7. In addition, the adsorption treatments were performed at different process time, incubation temperature, initial dye concentration and adsorbent amount to find maximum removal capacity of the adsorbent. The modified cryogels adsorbed maximum amount of RBB at pH 2 and the sorption process reached equilibrium in 6 h. It was observed that the adsorption efficiency did not change much with the increase in temperature. The maximum RBB removal capacity of the modified cyrogels was determined to be 201 mg/g when the initial RBB concentration was 200 mg/L, treatment time was 6 h at pH 2. Moreover, the adsorption of RBB dye with the modified cryogels takes place with a second order kinetic and RBB dye adsorption data showed compliance with the Langmuir isotherm. The findings of the study expose that the obtained PEI-modified PAAm cryogels are a hopeful material for RBB removal in aqueous environment.
dc.description.sponsorshipKirikkale University Scientific Research Projects Unit [2016/030]
dc.description.sponsorshipThis study was financially supported by Kirikkale University Scientific Research Projects Unit (Project Number; 2016/030).
dc.identifier.doi10.1007/s10924-021-02187-2
dc.identifier.endpage163
dc.identifier.issn1566-2543
dc.identifier.issn1572-8919
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85106456699
dc.identifier.scopusqualityQ1
dc.identifier.startpage151
dc.identifier.urihttps://doi.org/10.1007/s10924-021-02187-2
dc.identifier.urihttps://hdl.handle.net/20.500.12587/24596
dc.identifier.volume30
dc.identifier.wosWOS:000654972900002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Polymers and The Environment
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241229
dc.subjectPolyacrylamide; Hofmann reaction; Polyethylenimine; Adsorption; Remazol Black B
dc.titleEffective Removing of Remazol Black B by the Polyacrylamide Cryogels Modified with Polyethyleneimine
dc.typeArticle

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