Natural organic matter (NOM) present in four Korean water sources as
representatives of Korean water supplies, and three U.S. water sources were characterized
by dissolved organic carbon (DOC), ultraviolet absorbance (UVA) 254, specific ultraviolet absorbance (SUVA), XAD 8/4 fractionation, SEC-DOC/UV, protein and
carbohydrates contents, and fluorescence excitation and emission matrix (EEM), and
dissolved organic nitrogen (DON). Algal organic matter and effluent impacted waters
exhibit a fingerprint of high content of colloidal organic matter and/or macromolecules. It
is noteworthy that the high content of colloidal organic matter and/or macromolecules are
associated with an increase in the HPI fraction of DOC and high MW DOC.
In order to simulate an integrated membrane system (IMS), water sources were
prefiltered with a 0.22 mm filter. Prefiltered water showed less flux decline after 6 hours
of filtration than 0.45 mm prefiltered water while the rejection rate reached up to 97%
based on DOC. However, Fourier Transform Infrared Spectroscopy (FTIR) analysis revealed a signature of polysaccharides
deposited on the membrane surface. This indicates that the foulant causing a significant
flux decline is between 0.45 ~ 0.22 mm and these sizes reflect colloidal organic matter
and/or macromolecules. Includes 4 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 16 |
| Published : | 11/15/2004 |
