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Volume 9
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10.3390/toxics9080186
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Article

Efficient and Fast Removal of Oils from Water Surfaces via Highly Oleophilic Polyurethane Composites

by
Antonio De Nino
*,
Fabrizio Olivito
*,
Vincenzo Algieri
,
Paola Costanzo
,
Antonio Jiritano
,
Matteo Antonio Tallarida
and
Loredana Maiuolo
*
Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy
*
Authors to whom correspondence should be addressed.
Toxics 2021, 9(8), 186; https://doi.org/10.3390/toxics9080186
Submission received: 7 July 2021 / Revised: 28 July 2021 / Accepted: 2 August 2021 / Published: 5 August 2021
(This article belongs to the Special Issue New Technologies to Decontaminate Pollutants in Water)
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Abstract

In this study we evaluated the oil adsorption capacity of an aliphatic polyurethane foam (PU 1) and two of its composites, produced through surface coating using microparticles of silica (PU-Si 2) and activated carbon (PU-ac 3). The oil adsorption capacity in diesel was improved up to 36% using the composite with silica and up to 50% using the composite with activated carbon with respect to the initial PU 1. Excellent performances were retained in gasoline and motor oil. The adsorption was complete after a few seconds. The process follows a monolayer adsorption fitted by the Langmuir isotherm, with a maximum adsorption capacity of 29.50 g/g of diesel for the composite with activated carbon (PU-ac 3). These materials were proved to be highly oleophilic for oil removal from fresh water and sea water samples. Regeneration and reuse can be repeated up to 50 times by centrifugation, without a significant loss in adsorption capacity.
Keywords: polyurethane; composite; adsorption capacity; oleophilicity; regeneration polyurethane; composite; adsorption capacity; oleophilicity; regeneration
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MDPI and ACS Style

De Nino, A.; Olivito, F.; Algieri, V.; Costanzo, P.; Jiritano, A.; Tallarida, M.A.; Maiuolo, L. Efficient and Fast Removal of Oils from Water Surfaces via Highly Oleophilic Polyurethane Composites. Toxics 2021, 9, 186. https://doi.org/10.3390/toxics9080186

AMA Style

De Nino A, Olivito F, Algieri V, Costanzo P, Jiritano A, Tallarida MA, Maiuolo L. Efficient and Fast Removal of Oils from Water Surfaces via Highly Oleophilic Polyurethane Composites. Toxics. 2021; 9(8):186. https://doi.org/10.3390/toxics9080186

Chicago/Turabian Style

De Nino, Antonio, Fabrizio Olivito, Vincenzo Algieri, Paola Costanzo, Antonio Jiritano, Matteo Antonio Tallarida, and Loredana Maiuolo. 2021. "Efficient and Fast Removal of Oils from Water Surfaces via Highly Oleophilic Polyurethane Composites" Toxics 9, no. 8: 186. https://doi.org/10.3390/toxics9080186

APA Style

De Nino, A., Olivito, F., Algieri, V., Costanzo, P., Jiritano, A., Tallarida, M. A., & Maiuolo, L. (2021). Efficient and Fast Removal of Oils from Water Surfaces via Highly Oleophilic Polyurethane Composites. Toxics, 9(8), 186. https://doi.org/10.3390/toxics9080186

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