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Sorption performance of quercus cerris cork with polycyclic aromatic hydrocarbons and toxicity testing

Quercus cerris is an important oak species extended in large areas of Eastern Europe and Minor Asia that has a thick bark which is not utilized at all. The sorption performance of cork from Quercus cerris bark with four polycyclic aromatic hydrocarbons (PAHs) (acenaphthene, fluorene, phenanthrene, and anthracene) was investigated. Quercus cerris cork was characterized for elemental analysis, acidic groups, and summative chemical composition, and the results were compared with Quercus suber cork. A Microtox® test was carried out to test for the release of any toxic compounds into the solution. All isotherms fit the Freundlich model and displayed linear n values. Quercus cerris exhibited a high efficiency for sorption of PAHs for the studied concentrations (5 to 50 µg/L) with 80-96% removal, while the desorption isotherms showed a very low release of the adsorbed PAHs (<2%). In relation to Quercus suber cork, KF values of Quercus cerris cork are about three times lower. The quantity of Quercus cerris cork required to reduce water pollution by PAHs was estimated to be less than twice the quantity of other adsorbents such as aspen wood and leonardite. Toxicity tests indicated that non-toxic compounds were released into the solution by the Quercus cerris and Quercus suber cork samples. Overall the results indicate the potential use of Quercus cerris cork and of Quercus suber cork as effective and economical biosorbents for the treatment of PAH-contaminated waters

This research was funded by the Spanish Ministry of Science and Innovation as part of the project CTM CTM2010-15185

© BioResources, 2011, vol. 6, núm. 3, p. 3363-3375

North Carolina State University

Author: Olivella Costa, Àngels
Jové, Patricia
Sen, Ali Umut
Pereira, Helena
Villaescusa Gil, Isabel
Fiol Santaló, Núria
Date: 2011
Abstract: Quercus cerris is an important oak species extended in large areas of Eastern Europe and Minor Asia that has a thick bark which is not utilized at all. The sorption performance of cork from Quercus cerris bark with four polycyclic aromatic hydrocarbons (PAHs) (acenaphthene, fluorene, phenanthrene, and anthracene) was investigated. Quercus cerris cork was characterized for elemental analysis, acidic groups, and summative chemical composition, and the results were compared with Quercus suber cork. A Microtox® test was carried out to test for the release of any toxic compounds into the solution. All isotherms fit the Freundlich model and displayed linear n values. Quercus cerris exhibited a high efficiency for sorption of PAHs for the studied concentrations (5 to 50 µg/L) with 80-96% removal, while the desorption isotherms showed a very low release of the adsorbed PAHs (<2%). In relation to Quercus suber cork, KF values of Quercus cerris cork are about three times lower. The quantity of Quercus cerris cork required to reduce water pollution by PAHs was estimated to be less than twice the quantity of other adsorbents such as aspen wood and leonardite. Toxicity tests indicated that non-toxic compounds were released into the solution by the Quercus cerris and Quercus suber cork samples. Overall the results indicate the potential use of Quercus cerris cork and of Quercus suber cork as effective and economical biosorbents for the treatment of PAH-contaminated waters
This research was funded by the Spanish Ministry of Science and Innovation as part of the project CTM CTM2010-15185
Format: application/pdf
ISSN: 1930-2126
Document access: http://hdl.handle.net/10256/7680
Language: eng
Publisher: North Carolina State University
Collection: MICINN/PN 2011-2013/CTM2010-15185
Articles publicats (D-EQATA)
Is part of: © BioResources, 2011, vol. 6, núm. 3, p. 3363-3375
Rights: Tots els drets reservats
Subject: Roure
Oak
Suro
Cork
Title: Sorption performance of quercus cerris cork with polycyclic aromatic hydrocarbons and toxicity testing
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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