Zeolites are environmentally compatible crystalline aluminosilicates, which have well defined micropore dimensions and composition in a rigid crystal lattice. The shape of their internal pore structure can strongly affect their adsorption selectivity toward host molecules [1-3]. In the present work, organophilic synthetic zeolites which are cheap and available on the market, differing in topology, channel systems and free window apertures, and emerging organic contaminants (i.e. pharmaceuticals, fuel-based-pollutants) differing in chemical properties and molecular dimensions, were tested. A combined diffractometric, thermogravimetric, and gas chromatographic study was used to: (i) measure the sorption capacity of hydrophobic zeolite materials weighed against organic pollutants dissolved in water; (ii) quantify aspects of their removal efficiency for potential use in wastewater and groundwater remediation; (iii) understand zeolite structural features for the adsorption of emerging organic pollutants from aqueous solutions. Coupling the information gathered from these approaches can help in selecting adsorbent materials for water treatment. [1] D. Löffler et al. (2005) Environ. Sci. Technol. 39, 5209- 5218. [2] A. Martucci et al. (2012) Micropor. Mesopor. Mater. 148, 174-183. [3] L. Pasti et al. (2012) Micropor. Mesopor. Mater. 160 182–193. [4] B.A. De Moor et al., J. Phys. Chem. C (2011) 115, 1204–1219.
Emerging organic pollutants removal from water using high silica zeolites
MARTUCCI, Annalisa;PASTI, Luisa;SARTI, Elena;
2013
Abstract
Zeolites are environmentally compatible crystalline aluminosilicates, which have well defined micropore dimensions and composition in a rigid crystal lattice. The shape of their internal pore structure can strongly affect their adsorption selectivity toward host molecules [1-3]. In the present work, organophilic synthetic zeolites which are cheap and available on the market, differing in topology, channel systems and free window apertures, and emerging organic contaminants (i.e. pharmaceuticals, fuel-based-pollutants) differing in chemical properties and molecular dimensions, were tested. A combined diffractometric, thermogravimetric, and gas chromatographic study was used to: (i) measure the sorption capacity of hydrophobic zeolite materials weighed against organic pollutants dissolved in water; (ii) quantify aspects of their removal efficiency for potential use in wastewater and groundwater remediation; (iii) understand zeolite structural features for the adsorption of emerging organic pollutants from aqueous solutions. Coupling the information gathered from these approaches can help in selecting adsorbent materials for water treatment. [1] D. Löffler et al. (2005) Environ. Sci. Technol. 39, 5209- 5218. [2] A. Martucci et al. (2012) Micropor. Mesopor. Mater. 148, 174-183. [3] L. Pasti et al. (2012) Micropor. Mesopor. Mater. 160 182–193. [4] B.A. De Moor et al., J. Phys. Chem. C (2011) 115, 1204–1219.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
