Figure 1
From: Characteristics of Cadmium Sorption by Heat-Activated Red Mud in Aqueous Solution
The maximum Cd(II) sorption capacities of original red mud (RM), red mud heat-activated at 500 °C (HARM) and red mud heat-treated at 200, 400, 800, 900 °C (RM200–RM900). The means are not significantly different from each other in columns labeled with the same lowercase letters (ANOVA, LSD test, p < 0.05).
