Comparison of BEA, USY and ZSM-5 for the quantitative extraction of polycyclic aromatic hydrocarbons from water samples
Abbreviated Journal Title
Microporous Mesoporous Mat.
Zeolite; Water; Extraction; Polycyclic aromatic hydrocarbons; Adsorption; LOW-COST ADSORBENTS; MOLECULARLY IMPRINTED POLYMER; GRANULAR ACTIVATED; CARBON; LAYERED DOUBLE HYDROXIDES; HEAVY-METALS; ZEOLITE-BETA; WASTE-WATER; ADSORPTION; REMOVAL; SORPTION; Chemistry, Applied; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
The physicochemical properties of three commercial zeolites - namely BEA, USY and ZSM-5 - are compared for the water removal of 15 PAHs included in the US EPA priority pollutants list. The best percentages of extraction were obtained with BEA and varied from 85.2 +/- 1.7% (benzo[g,h,i]perylene) to 99.6 +/- 1.1% (pyrene). The correlation of physicochemical properties to the percentages of extraction suggests that the predominant factor for a successful extracting performance is the adsorption of PAHs to the external surface of the extracting material. This process is facilitated by relatively large total pore volumes, large average pore diameters and a homogeneous distribution of Lewis acid sites. The presence of the latter enhances extraction performance via pi-electron interactions with the aromatic rings of the PAH. (C) 2011 Published by Elsevier Inc.
Microporous and Mesoporous Materials
"Comparison of BEA, USY and ZSM-5 for the quantitative extraction of polycyclic aromatic hydrocarbons from water samples" (2012). Faculty Bibliography 2010s. 2447.