Table 3.

Determination of equilibrium time for methylene blue (MB) dye adsorption onto activated carbon.

Adsorption Time (Contact Time)	Final Dye Concentration (ppm)
0	30
10	21.1
20	14.2
30	8.6
40	3.1
50	2.8
60	2.6
75	2.5
90	2.5
105	2.4