Removal of Polycarboxylic Benzoic Acids Using Polyanilinepolypyrrole Copolymer: Experimental and DFT Studies

This work focuses on the removal of hemimellitic, trimellitic, and pyromellitic acids from aqueous solution usingpolyaniline-polypyrrole copolymer. The experimental data indicate that the adsorption is well described by the pseudosecond-order kinetic model and the Langmuir isotherm model. The maximu...

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Bibliographic Details
Published in:Fibers and polymers 2019, 20(5), , pp.896-905
Main Authors: M. Laabd, A. Hallaoui, N. Aarb, A. Essekri, H. Eljazouli, R. Lakhmiri, A. Albourine
Format: Article
Language:English
Subjects:
섬유공학
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Summary:This work focuses on the removal of hemimellitic, trimellitic, and pyromellitic acids from aqueous solution usingpolyaniline-polypyrrole copolymer. The experimental data indicate that the adsorption is well described by the pseudosecond-order kinetic model and the Langmuir isotherm model. The maximum adsorbed quantities of hemimellitic, trimellitic,and pyromellitic acids are 79.94, 93.55, and 111.29 mg/g, respectively. The thermodynamic study shows that the adsorptionwas a spontaneous and endothermic process. The adsorption mechanism was investigated using the density functional theory(DFT) at the B3LYP/6-31G(d). The theoretical data show that the adsorbate molecules were physisorbed via their carboxylicgroups on the hydrogen atoms in amine groups of the polyaniline-polypyrrole. All the results suggest that the PANi-PPycopolymer is an efficient recyclable adsorbent for wastewater treatment. KCI Citation Count: 2
ISSN:1229-9197
1875-0052
DOI:10.1007/s12221-019-8212-9