• AWWA MTC64596

AWWA MTC64596

Membrane Adsorption of Endocrine Disrupting Compounds and Pharmaceuticals

American Water Works Association , 03/01/2007

Publisher: AWWA

File Format: PDF

$12.00$24.00


The adsorption of twenty-two endocrine disrupting compounds (EDCs) and pharmaceutically active compounds (PhACs) to ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) membranes was investigated using 24-hour bottle tests. Two natural waters (Lake Ontario water and effluent from a membrane bioreactor (MBR)) and one laboratory-grade water (Milli-Q® water) were examined in order to determine the influence of organic matter on compound adsorption to membranes. Adsorption was most influenced by compound log Kow, a measure of hydrophobicity, and water solubility. Hydrophobic adsorption appears to be the main mechanism responsible for EDC and PhAC adsorption. Adsorption was highest with the UF membrane followed by the NF and RO membranes. Adsorption was also affected by membrane pure water permeability (PWP), which gives an indication of the porosity of a membrane. It is proposed that a more porous membrane provides a larger surface area which results in more available membrane adsorption sites. Finally, in order to avoid masking the influence of water matrix on adsorption due to differences in analytical sample recoveries, it was determined that the use of compounds with surrogates would provide the most accurate investigation of the influence of water matrix on adsorption. Includes 30 references, tables, figures.

More AWWA Standards PDF

AWWA WSC69989

AWWA WSC69989

$12.00 $24.00

AWWA ACE70666

AWWA ACE70666

$12.00 $24.00

AWWA ACE70727

AWWA ACE70727

$12.00 $24.00

AWWA WQTC71645

AWWA WQTC71645

$12.00 $24.00