San copolymer membranes with ion exchangers for Cu(II) removal from synthetic wastewater by electrodialysis.
Heterogeneous membranes were obtained by using styrene-acrylonitrile copolymer (SAN) blends with low content of ion-exchanger particles (5wt.%). The membranes obtained by phase inversion were used for the removal of copper ions from synthetic wastewater solutions by electrodialytic separation. The electrodialysis was conducted in a three cell unit, without electrolyte recirculation. The process, under potentiostatic or galvanostatic control, was followed by pH and conductivity measurements in the solution. The electrodialytic performance, evaluated in terms of extraction removal degree (rd) of copper ions, was better under potentiostatic control then by the galvanostatic one and the highest (over 70%) was attained at 8V. The membrane efficiency at small ion-exchanger load was explained by the migration of resin particles toward the pores surface during the phase inversion. The prepared membranes were characterized by various techniques i.e. optical microscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis and differential thermal analysis and contact angle measurements.
"Politehnica" University of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Calea Grivitei, no. 132, 010737, Bucharest, Romania.
Simona
S
Caprarescu
National Research and Development Institute for Chemistry and Petrochemistry - ICECHIM, Polymer Department, Splaiul Independentei, no. 202, 060021, Bucharest, Romania. Electronic address: mcorobea@yahoo.com.
Mihai Cosmin
MC
Corobea
National Research and Development Institute for Chemistry and Petrochemistry - ICECHIM, Polymer Department, Splaiul Independentei, no. 202, 060021, Bucharest, Romania.
Violeta
V
Purcar
National Research and Development Institute for Chemistry and Petrochemistry - ICECHIM, Polymer Department, Splaiul Independentei, no. 202, 060021, Bucharest, Romania.
Catalin Ilie
CI
Spataru
National Research and Development Institute for Chemistry and Petrochemistry - ICECHIM, Polymer Department, Splaiul Independentei, no. 202, 060021, Bucharest, Romania.
Raluca
R
Ianchis
National Research and Development Institute for Chemistry and Petrochemistry - ICECHIM, Polymer Department, Splaiul Independentei, no. 202, 060021, Bucharest, Romania.
Gabriel
G
Vasilievici
National Research and Development Institute for Chemistry and Petrochemistry - ICECHIM, Polymer Department, Splaiul Independentei, no. 202, 060021, Bucharest, Romania.
Zina
Z
Vuluga
D000181:Acrylonitrile / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D007474:Ion Exchange; D007477:Ions / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry*; D062065:Wastewater / Q000032:analysis*; D018508:Water Purification / Q000191:economics / Q000379:methods*
D000181:Acrylonitrile; D003300:Copper; D007477:Ions; D011108:Polymers; D011137:Polystyrenes; D062065:Wastewater
Copper ions; Electrodialysis; Ion exchange; Membrane; SAN copolymer; Wastewater treatment