Question

What is red mud, how is it removed?

Answer 1

• Red mud, also known as bauxite residue, is industrial waste generated during the refinement of bauxite into alumina using the Bayer process. It is composed of various oxide compounds, including iron oxides, which give it the red colour.
• Red mud consists of ferric oxide, sand, etc., left after bauxite dissolves in NaOH, forming sodium aluminate, which filtration removes.