Toxic mud from aluminium production can be used to make greener steel
Aluminium refinement produces a hazardous red sludge Ajdin Kamber/Shutterstock The huge reservoirs of hazardous red mud that are produced as part of refining aluminium could be used to make greener steel. There are roughly 4 billion tonnes of red mud stored around the world, which is an environmental hazard that can lead to deadly accidents. …