TY - JOUR ID - 10.1016/j.jes.2015.02.005 TI - San copolymer membranes with ion exchangers for Cu(II) removal from synthetic wastewater by electrodialysis AU - Simona Caprarescu AU - Mihai Cosmin Corobea AU - Violeta Purcar AU - Catalin Ilie Spataru AU - Raluca Ianchis AU - Gabriel Vasilievici AU - Zina Vuluga VL - 35 IS - 9 PB - SP - 27 EP - 37 PY - JF - Journal of Environmental Sciences JA - J. Environ. Sci. UR - http://www.jesc.ac.cn/jesc_en/ch/reader/view_abstract.aspx?file_no=S1001074215001783&flag=1 KW - SAN copolymer; Membrane; Ion exchange; Copper ions; Electrodialysis; Wastewater treatment AB - Heterogeneous membranes were obtained by using styrene-acrylonitrile copolymer (SAN) blends with low content of ion-exchanger particles (5 wt.%). 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 8 V. 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. ER -