Mass Transfer Studies on Adsorption of Phenol from Wastewater Using Lantana camara, Forest Waste

Table 5

The time taken by the adsorbent treated with HCl for the three different stages of adsorption.

HCl treated adsorbent, concentration	Time taken for film diffusion, min	Time taken for intraparticle diffusion, min	Time taken for adsorption, min	Ratio of time taken for film diffusion to that for intraparticle diffusion
25 mg/L	174.4	39.7	9	4.39
50 mg/L	110.25	64	49	1.722
100 mg/L	196	36	4	5.44
150 mg/L	182.25	42.25	6.25	4.31
200 mg/L	144	30.25	25	4.76
250 mg/L	156.25	56.25	6.25	2.77