AWWA WQTC71428
The Impact of Nanoparticles on the Removal of TCE by Activated Carbon
Conference Proceeding by American Water Works Association , 11/01/2009
Salih, Hafiz; Sorial, G.; Sinha, R.; Krishnan, E.; Patterson, C.
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About This Item
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This powerpoint presentation begins by providing a brief overview of the presence of nanoparticles (NPs) in water. The primary objective of this study was to examine how three commercially available
nanomaterials (TiO2, SiO2, Fe2O3) impact the
removal of Trichloroethylene (TCE) by activated carbon adsorption. Specific objectives included: nanoparticles characteristics,
characterizing particle size distribution (PSD)
zeta potential and pH<sub>pzc</sub>; isotherm experiment; and, breakthrough studies - virgin and spent granular activated carbon (GAC) analysis. Materials and methods included: nanomaterials - Titania - 30 nm, Iron Oxide - 20 to 40 nm, Silica - 20 nm; adsorbates - TCE & Humic acid, adsorbents - Filterasorb 400 (F-400), and organic-free water - autoclaved DI water,
buffered with 0.01M KH<sub>2</sub>PO<sub>4</sub>, pH adjusted to 7
with 10M solution of NaOH. Analytical instrumentation and experimental setup are presented, and conclusions are provided for electrokinetics, adsorption kinetics, and column breakthrough. Includes tables, figures.
