Table 3.

The Cu²⁺ removal from natural waters, initial Cu²⁺ concentration of ~ 0.8 ppm and L/S ratio of 1 g/L.

Sorbents	River water (pH ~ 7.9)			Seawater (pH ~ 7.9)
	Initial Cu (ppm)	Final Cu (ppb)	% Removal	Initial Cu (ppm)	Final Cu (ppb)	% Removal
EDA-SAMMS	0.75	6.3	99	0.79	15.3	98
AC-CH2-EDA	0.75	10.7	99	0.79	25.1	97
Phen-FMC	0.75	0.1	100	0.79	4.6	99