Sajad Rahmanzadeh
Hassan Fattahi
Nasser Arsalani

In the present research, at first, poly (N-vinyl pyrrolidone) (PVP) with different Kvalues was synthesized in the presence of hydrogen peroxide as initiator under argon gas. Then, the retentions of Orange II and Orange G dyes, as chemical species, were investigated in various pHs by PVP in combination with LPR technique. The concentrations of chemical species in the permeate and the retentate were determined by UV-Vis spectroscopy. Between Orange II and Orange G, the maximum retention belonged to Orange II at pH3.

Poly (N-vinyl pyrrolidone), water soluble dye, water soluble polymer, LPR technique