• AWWA WQTC71428

AWWA WQTC71428

The Impact of Nanoparticles on the Removal of TCE by Activated Carbon

American Water Works Association , 11/01/2009

Publisher: AWWA

File Format: PDF

$12.00$24.00


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 pHpzc; 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 KH2PO4, 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.

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