| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina and Bauxite
|
| Presentation Title |
Wet Oxidation of Bayer Liquor Organics: Reaction Mechanisms |
| Author(s) |
Jackie Dong, James Tardio, Joanne Loh, Greg Power, Chris Vernon, Suresh Bhargava |
| On-Site Speaker (Planned) |
Jackie Dong |
| Abstract Scope |
Organic impurities in Bayer liquor cause significant losses in productivity and hence the development of improved processes for removing these impurities from this unique solution is of great interest to the alumina industry. Of the various organics removal processes that have been studied and implemented oxidation processes such as wet air oxidation that do not involve the introduction of foreign species into Bayer liquor have received most interest. The chemistry of wet air oxidation of Bayer organics such as sodium malonate and similar compounds is however poorly understood which has hindered improvements in Bayer liquor wet air oxidation processes. In the work reported here results are presented on the influence of key structural features on the reactivity of common Bayer organics under typical wet air oxidation conditions. Reaction mechanisms that occur in the wet air oxidation of several common Bayer impurities are also discussed using 13C NMR and kinetics techniques. |
| Proceedings Inclusion? |
Definite: A combination print-CD volume |