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Nanomaterials 2018, 8(5), 334; https://doi.org/10.3390/nano8050334

An Innovative Porous Nanocomposite Material for the Removal of Phenolic Compounds from Aqueous Solutions

1
Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali (Di.S.Te.B.A.), Università del Salento, via Monteroni, 73100 Lecce, Italy
2
CNR NANOTEC—Institute of Nanotechnology c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
3
Dipartimento di Matematica e Fisica, Università del Salento, Via per Arnesano, 73100 Lecce, Italy
4
National Institute of Gastroenterology “S. De Bellis” Research Hospital, via Turi 27, 70013 Castellana Grotte, Bari, Italy
*
Author to whom correspondence should be addressed.
Received: 3 May 2018 / Revised: 11 May 2018 / Accepted: 14 May 2018 / Published: 16 May 2018
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Abstract

Energy efficient, low-cost, user-friendly, and green methods for the removal of toxic phenolic compounds from aqueous solution are necessary for waste treatment in industrial applications. Herein we present an interesting approach for the utilization of oxidized carbon nanotubes (CNTs) in the removal of phenolic compounds from aqueous solution. Dried pristine CNTs were stably incorporated in a solid porous support of polydimethylsiloxane (PDMS) facilitating the handling during both oxidation process of the nanomaterial and uptake of phenolic compounds, and enabling their safe disposal, avoiding expensive post-treatment processes. The adsorption studies indicated that the materials can efficiently remove phenolic compounds from water with different affinities towards different phenolic compounds. Furthermore, the adsorption kinetics and isotherms were studied in detail. The experimental data of adsorption fitted well with Langmuir and Freundlich isotherms, and pseudo-second-order kinetics, and the results indicated that the adsorption process was controlled by a two-step intraparticle diffusion model. The incorporation of CNTs in polymeric matrices did not affect their functionality in phenol uptake. The material was also successfully used for the removal of phenolic compounds from agricultural waste, suggesting its possible application in the treatment of wastewater. Moreover, the surface of the material could be regenerated, decreasing treatment costs. View Full-Text
Keywords: carbon nanotubes; phenol; phenolic compound; remediation; oil mill wastewater carbon nanotubes; phenol; phenolic compound; remediation; oil mill wastewater
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Turco, A.; Monteduro, A.G.; Mazzotta, E.; Maruccio, G.; Malitesta, C. An Innovative Porous Nanocomposite Material for the Removal of Phenolic Compounds from Aqueous Solutions. Nanomaterials 2018, 8, 334.

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