Endocrine disrupting compounds (EDCs) are a continual source of concern in water treatment, as they are biologically active
at nanogram per liter concentrations, and have been shown to cause sexual development
disruption in aquatic wildlife. Adsorption processes have shown promise as excellent
EDC removal processes, due to the hydrophobic nature of many EDCs and the resulting
affinity of these compounds for hydrophobic surfaces. In addition to traditional sorption
methods involving activated carbon, recent work has been examining the effectiveness of
high silica zeolites for removal of hydrophobic contaminants. Bench scale adsorption
studies are performed to collect baseline adsorption data for three EDCs (E1, E2, EE2) on
three zeolytes (ranging from low to high hydrophobicity). The efficiency of UV and
UV/H<sub>2</sub>O<sub>2</sub> treatment is being studied with bench-scale collimated beam studies.
Preliminary data indicated 90% of adsorbed E1 can be removed from DAY zeolite with
UV alone at a dose of 2000 mJ cm<sup>-2</sup>. While E1 is structurally similar to E2 and EE2, the
efficiency of direct UV for degrading these compounds varies significantly, as indicated
by the variation in quantum yield values. Therefore, UV/H<sub>2</sub>O<sub>2</sub> AOP was also tested for
removing and oxidizing the EDCs. Includes 21 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 780 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 12 |
| Published : | 11/01/2008 |
