From: Adsorptive removal of malachite green dye from aqueous solution onto activated carbon of Catha edulis stem as a low cost bio-adsorbent
Adsorbent
RL values
Concentration (mg/L)
10
20
30
40
50
Activated carbon of khat (Catha edulis)
0.089
0.047
0.032
0.024
0.019