Table 1 Parameters for the Langmuir and Freundlich models of Cu2+ adsorption.

From: Advanced Modified Polyacrylonitrile Membrane with Enhanced Adsorption Property for Heavy Metal Ions

Metal

Langmuir

Freundlich

q m

K1 (L/mg)

K2 (mg/g(L/mg)1/n)

1/n

Cu2+

47.6

0.233

25.70

0.13