Designer composite of montmorillonite-reduced graphene oxide-PEG polymer for water treatment: Enrofloxacin sequestration and cost analysis - Research portal of Justus Liebig University Giessen:

Journal article

Designer composite of montmorillonite-reduced graphene oxide-PEG polymer for water treatment: Enrofloxacin sequestration and cost analysis

Authors list: Akpotu, Samson O.; Diagboya, Paul N.; Lawal, Isiaka A.; Sanni, Saheed O.; Pholosi, Agnes; Peleyeju, Moses G.; Mtunzi, Fanyana M.; Ofomaja, Augustine E.

Publication year: 2023

Journal: Chemical Engineering Journal

Volume number: 453

ISSN: 1385-8947

eISSN: 1873-3212

DOI Link: https://doi.org/10.1016/j.cej.2022.139771

Publisher: Elsevier

Abstract:
Synergistically combining lower performing adsorbents may effectively enhance the composite's aqueous contaminant uptake and reduce water treatment cost. Hence in this study, Montmorillonite (Mont) was coupled to graphene oxide (GO)/reduced GO (rGO), and covalently bonded to polyethylene glycol methyl ether (PEG) using a scalable facile amidation method to produce the designer composite. This was employed for the sequestration of an aqueous emerging contaminant (enrofloxacin). Characterization showed attachment of thin GO-PEG films on the surface of Mont, with marked differences in elemental constitution and functionalities post-preparation. Enrofloxacin adsorption equilibrium was fast and optimal at <= 30 min and pH 6, respectively, while the data fitted the pseudo-second order and Langmuir models with maximum adsorption of 310.6 mg/g. Reuse and cost analysis of the composite showed effective optimal reuse (>= 72 %) in real/simulated water samples after 4 adsorption-desorption cycles, while the clay-polymer composite was significantly a cheaper adsorbent with higher adsorption efficiency than other conventional adsorbents.

Citation Styles

Harvard Citation style: Akpotu, S., Diagboya, P., Lawal, I., Sanni, S., Pholosi, A., Peleyeju, M., et al. (2023) Designer composite of montmorillonite-reduced graphene oxide-PEG polymer for water treatment: Enrofloxacin sequestration and cost analysis, Chemical Engineering Journal, 453, Article 139771. https://doi.org/10.1016/j.cej.2022.139771

APA Citation style: Akpotu, S., Diagboya, P., Lawal, I., Sanni, S., Pholosi, A., Peleyeju, M., Mtunzi, F., & Ofomaja, A. (2023). Designer composite of montmorillonite-reduced graphene oxide-PEG polymer for water treatment: Enrofloxacin sequestration and cost analysis. Chemical Engineering Journal. 453, Article 139771. https://doi.org/10.1016/j.cej.2022.139771

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SDG Areas