Q. Which of the following is/are the correct about Red Mud?
1.It is the waste generated in the Bayer process of alumina production from bauxite.
2.Red Mud tiles can be used to build radiation shielding structures in diagnostic X-rays, CT scanner rooms.
3.Red Mud is not considered as a toxic and have no properties of leaching.
Select the correct answer from the codes given below;

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: A
Notes:

Statement 1 and 2 are correct: Red Mud is the waste generated in the Bayer process of alumina production from bauxite. It is also known as bauxite residue.

Red Mud is defined as a “High Volume Low Effect Waste”. Nearly 1 to 1.5 tonnes of RM is being generated while producing one tonne of alumina from the bauxite ore through the Bayer process.

These tiles can be used to build radiation shielding structures in diagnostic X-rays, CT scanner rooms, Cath labs, bone mineral density, dental X-rays, etc instead of the toxic lead sheet to protect the public from radiation hazards.

Statement 3 is incorrect: Red Mud is considered to be toxic due to its extreme alkalinity and heavy element leaching.

Source: Advanced Materials and Processes Research Institute (AMPRI), Bhopal Converts Red Mud into X-ray shielding tiles