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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


A Digital Refinery Approach to Process Troubleshooting and Improvements
A Review of Comprehensive Utilization of High-iron Red Mud of China
Application of Advanced Oxidative Process for Organic Compounds Removal from Bayer Liquor
Bayer Process Towards the Circular Economy – Metal Recovery from Bauxite Residue
Bayer Process Towards the Circular Economy – Soil Conditioners from Bauxite Residue
Brazilian Bauxite Residue Physical-chemical Characterization and Acidic Neutralization Potential
Conversion Behavior of Iron-containing Minerals in the Process of Dissolving High-iron Bauxite by Starch Hydrothermal Method
Disc Magnetic Separator Applied to the Extraction of Magnetite in Bauxite Residue
Effect of Concentrations and Pressures of CO2 on Calcification-Carbonation Treatment of Bauxite residue
Effects of the Granular Properties of Bauxite Pisolites on the Solid/Liquid Separation in Liquid Fluidized Beds of Classifiers
F-4: Investigation on Heat Resisting Cast Iron Produced Through Carbothermic Reduction of Alumina Residue (Bayer Red Mud)
Impacts of Mineralogy on Soluble Phosphorus Concentrations During Low Temperature Processing of Jamaican Bauxites
Improved Technology of Scandium Recovery from Solutions of Bauxite Residue Carbonation Leaching
Inhibition of Kaolinite Dissolution in Bayer Liquor Through Addition of Lithium
Ionic Effect of NaCl and KCl on the Flotation of Diaspore and Kaolinite using Sodium Oleate as Collector
Mineralogical Assessment of the Solid Phase Obtained on Leaching of Brazilian Red Mud
Quantifying the Effect of Seeds on Gibbsite Crystallization – Mathematical Modelling of Particle Size Distribution
Recovery of Iron from High-iron Bayer Red Mud by Smelting Reduction
The Alumina Technology Roadmap 4.0.

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