Adsorption of Selected Pharmaceutical Compounds onto Activated Carbon in Dilute Aqueous Solutions Exemplified by Acetaminophen, Diclofenac, and Sulfamethoxazole

Table 2

Effective diffusion coefficient of acetaminophen, diclofenac, and sulfamethoxazole onto GAC.

Particle size (mesh)	Effective diffusion coefficient (10^−9 cm^2/s)
	Acetaminophen	Diclofenac	Sulfamethoxazole
60 × 80	7.47	4.75	9.33
80 × 120	6.43	3.82	8.65
120 × 230	6.11	2.73	7.46
230 × 320	5.20	2.63	5.74
<320	3.44	2.65	3.29
Average ± standard deviation	5.73 ± 1.13	3.32 ± 0.78	6.89 ± 1.90
Relative standard deviation	0.20	0.23	0.28