ENVR 284 |
| Polymers, especially polyacrylamide (PAM), have been used to enhance oil recovery processes. However, the produced water containing PAM is either discharged into rivers or re-injected and both methods have caused contamination to the source water. So a series of iron oxide/SiO2 catalysts were prepared by using different precursors (Fe(NO3)3 and FeSO4 solution) and used as heterogeneous catalysts for the photo-Fenton degradation of PAM solution. The catalysts were characterized by XRD and XPS. The results show that the structure and redox properties of the iron oxide are affected by using different precursors. The experimental results indicate that the catalysts have an excellent catalytic activity in treating PAM and 93.64% PAM can be removed in 90min. In addition, the catalytic activity of the catalysts can be increased by using FeSO4 solution as precursor. Leaching tests show that the catalysts have an excellent stability with negligible leaching of Fe ions. |
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Advances in Abiotic Transformation Processes for Micropollutants in Drinking Water and for Sourcewater Protection
6:00 PM-8:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Hall A, Poster
Division of Environmental Chemistry |