Even though polymeric nanofiltration (NF) and reverse osmosis (RO) membranes often
operate on surface waters and surficial groundwaters whose temperature varies over time and
with season, very little detailed mechanistic information on temperature effects on membrane
selectivity is available to date. Hence, a study was undertaken to investigate the effects of
operating temperature (5 - 41ºC) on the morphology and structure of two commercially available
thin film composite nanofiltration (NF) membranes. This paper presents recently
published results from this study on the influence of temperature on the membranes' active
layers. Results include quantitative information on the structure and morphology including
pore size distributions, pore connectivity, and pore number density as well as effective
membrane charge density. Apparent activation energy associated with hindered transport of
water and neutral solutes of different molecular dimensions will also be reported. Includes 50 references.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 360 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 9 |
| Published : | 03/01/2007 |
