| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina and Bauxite
|
| Presentation Title |
Application of Advanced Oxidative Process for Organic Compounds Removal from Bayer Liquor |
| Author(s) |
Miguel Soplin, Amilton Barbosa Botelho Junior, Jorge Tenorio , Marcela Baltazar, Denise Espinosa |
| On-Site Speaker (Planned) |
Amilton Barbosa Botelho Junior |
| Abstract Scope |
One of the most problems in aluminum industry is the organic matter in Bayer liquor. It causes a decrease on alumina quality and an increase on process costs. It occurs due to the high organic matter content presented in bauxite. Among the technologies available to remove those compounds, the advanced oxidative processes (AOP) can be used. This technique consists of the degradation of recalcitrant compounds by the formation of radicals, such as the OH°. The ozonation involves the injection of O3 for the OH° generation. The process can be improved by adding H2O2, accelerating the kinetics reaction. The aim of this work was to remove the organic compounds present in Bayer liquor through the injection of O3 and O3/H2O2 in a batch reactor. The effect of reagents concentration and temperature were evaluated. Results showed that the increase of temperature raises the organic degradation in higher concentrations. |
| Proceedings Inclusion? |
Planned: Light Metals |