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Issue 69, 2016, Issue in Progress
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Preparation and characterization of a composite based on polyaniline, polypyrrole and cigarette filters: adsorption studies and kinetics of phenylbutazone in aqueous media

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Abstract

Understanding the adsorption mechanisms of drugs on the surfaces of solid materials is important for determining the fate of these compounds in aqueous samples during water or wastewater treatment. A composite based on polyaniline (PAni), polypyrrole (PPy) and cigarette filters (CFs), PAni–PPy–CFs, was prepared, characterized by FTIR, TGA and SEM and applied in the investigation of the adsorption of a non-steroidal anti-inflammatory, phenylbutazone (PBZ), from aqueous solution. A group of experiments were conducted, and four kinetic models and five isotherm models were used to describe the adsorption process. The experimental kinetic data fitted very well with the second-order kinetic model, indicating that PBZ adsorption involves chemical adsorption at different binding sites, which could control the reaction rate. The equilibrium adsorption data were best fitted with the dual-site Langmuir–Freundlich isotherm, with a maximum adsorption capacity of 100.22 mg g−1; this indicates the existence of two kinds of adsorption sites on the polymer composite surface. Finally, this composite may act as a excellent adsorbent for environmental and analytical processes, such as a stationary phase in separation processes.

Graphical abstract: Preparation and characterization of a composite based on polyaniline, polypyrrole and cigarette filters: adsorption studies and kinetics of phenylbutazone in aqueous media

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Article information


Submitted
30 May 2016
Accepted
19 Jun 2016
First published
20 Jun 2016

RSC Adv., 2016,6, 64450-64459
Article type
Paper

Preparation and characterization of a composite based on polyaniline, polypyrrole and cigarette filters: adsorption studies and kinetics of phenylbutazone in aqueous media

T. A. Nascimento, F. V. Avelar Dutra, B. C. Pires, C. R. Teixeira Tarley, V. Mano and K. B. Borges, RSC Adv., 2016, 6, 64450
DOI: 10.1039/C6RA14071H

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