This slide presentation outlines a study on micropollutant rejection by high pressure reverse osmosis (RO) and nanofiltration (NF) membranes. Part 1 presents the rejection of anionic inorganic micropollutants
by negatively charged membranes including
chromate,
perchlorate,
and arsenate. Part 1 Hypotheses involves
membrane properties enhancing rejection include lower MWCO and
greater (negative) surface charge. Part 2 presents
rejection of trace organic micropollutants
by NF
and RO:
compound versus membrane properties. Part 2 Hypotheses - Most Past Studies Have Often Overestimated
Rejections due to Short Time Frame of Tests,
not Allowing for Pre-Saturation of Membrane;
Compound Transport through Membrane Is
Dictated by Solute-Membrane Interactions
(Steric, Electrostatic, and Partitioning); and,
Partitioning (either Hindered or Facilitated)
Embodies Solute-Membrane Affinity,
Solute Diffusion through, and Solubility in, the
Membrane. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 3.4 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 44 |
| Published : | 06/01/2006 |
