Adsorption of Bisphenol A on Peanut Shell Biochars: The Effects of Surfactants

Table 5

The adsorption coefficients (log (K_d)) calculated based on Freundlich model in absence and presence of the surfactants at different equilibrium concentrations of BPA.

Adsorbent	Background	Log Kd (L/kg)
		CW = 0.1 mg/L	CW = 10 mg/L
BC300	None	4.05	2.94
	CTAB	3.77	2.90
	SDBS	3.75	2.44
	Tween 20	3.59	2.44
BC500	None	4.33	3.02
	CTAB	3.99	3.07
	SDBS	3.82	2.68
	Tween 20	3.91	2.55
BC700	None	4.99	3.44
	CTAB	4.07	2.94
	SDBS	4.31	2.97
	Tween 20	4.44	3.07