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Photo‐Electrodialysis Combination System for Cd 2+ Removal Using Polymeric
Author(s) -
Saib Faouzi,
Arous Omar,
Mazari Akkacha,
Trari Mohamed
Publication year - 2019
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201800245
Subject(s) - cellulose triacetate , membrane , materials science , fourier transform infrared spectroscopy , capacitive deionization , scanning electron microscope , cellulose acetate , chemical engineering , thermogravimetric analysis , polyvinyl alcohol , analytical chemistry (journal) , nuclear chemistry , chemistry , polymer , organic chemistry , desalination , composite material , engineering , biochemistry
The present work combines the solar energy with the environmental protection through the membrane selectivity for metallic ions. Firstly, we have elaborated new polymeric membranes for ions separation. The membrane is made up of cellulose acetate (CA) modified by polyelectrolytes (polyethylenimine (PEI), polyvinyl alcohol (PVA) and polyanetholsulfonic acid (PATSA) using glycerol as plasticizer. Different membranes are characterized by Fourier transform infrared spectroscopy (FTIR), X‐Ray diffraction (XRD), thermo‐gravimetric analysis (TGA) and scanning electron microscopy (SEM). In a second part, we have prepared two new photo‐electrodes, crystallizing in the brownmillerites structure: n ‐Sr 2 Fe 2 O 5 and p ‐Sr 2 Co 2 O 5 and their photo‐electrochemical characterizations are undertaken. As application, the transport of Cd 2+ using the synthesized membranes coupled with the photo‐electrodes is studied. The photo‐catalytic results indicate that the combined hetero‐system n ‐Sr 2 Fe 2 O 5 / p ‐Sr 2 Co 2 O 5 enhances considerably the electrons transfer. The diffusion flux of Cd 2+ is considerably enhanced when the electrode is exposed to visible light illumination. The results show that the transport percentages of Cd 2+ increases by 40% under solar energy and 25% under a tungsten lamp.