Table 2. Constants of Langmuir and Freundlich Equations for the Sorption of BPA and TCS by Graphene or Activated Carbon^a.

		Langmuir constants			Freundlich constants
sorbent	sorbate	KL (L/μg)	qm (μg/g)	R2	KF [(μg/g) (μg/L)−n]	n	R2
GR	BPA	0.0052	2.0 × 103	0.976	73.41	2.17	0.907
	TCS	3.3 × 10–6	1.1 × 108	0.542	11.60	0.43	0.944
AC	BPA	0.0014	1.9 × 103	0.962	89.44	2.27	0.846
	TCS	4.4 × 10–4	3.5 × 103	0.979	30.36	1.56	0.965

^aGR represents graphene and AC means activated carbon.