Removal of Phosphate Using Red Mud: An Environmentally Hazardous Waste By-Product of Alumina Industry

Table 2

BET surface area analysis of various red mud samples.

Sr. number	Samples	Area (m^2/g)
1	RM (raw red mud)	20.89
2	RMH (heated red mud at 700°C for two hours)	42.01
3	RMA (acid treated red mud)	28.63
4	RMAH (red mud treated with acid and then heated at 700°C for two hours)	37.34