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A combination system conjoining ionic membranes–semiconductors is studied for the remove of metallic ions from water. In this work, a new kind of cellulosic membranes was developed, improved by polyelectrolytes carboxy-methyl cellulose (CMC) or polyethyleneimine (PEI) integration that are highly permeable to heavy metals using dioctyle phtalate (DOP) as plasticizer. The characterization of all synthesized membranes was achieved by thermogravimetric analysis (TGA), Attenuated Total Reflectance infrared spectroscopy and contact angles. In other side, two semiconductors namely n-Ca2Fe2O5 and p-Ca2Co2O5 were prepared by nitrates route. As application the photo-electrodialysis was examined to reduce metallic cations Cd2+ under solar and artificial light. The results indicated that the association of p-Ca2Co2O5/membranes/n-Ca2Fe2O5 improves significantly the transport and the migration of heavy metals toward the cationic membrane and provide appreciable reduction percentages. The combination between membranes and semiconductors was realized to purify a polluted water by cadmium (toxic metal). The residual concentrations of heavy metal after treatment were determined by atomic absorption spectroscopy (AAS). Semiconductors have given considerable photo-catalytic results. The treatment of a cadmium solution at 50 mg/L gave a very appreciable yield of the photo-reduction for 5 h under solar irradiation.

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Simultaneous Complexation and Photo-Electrodeposition of Cadmium Using Semiconductors and Polymeric Membranes Combination for Water Purification

  • 会议论文

  • 发表日期：

    2026年

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  • Omar Arous,
  • Naima Abdellaoui,
  • Ouarda Merdoud,
  • Mohamed Trari

摘要

A combination system conjoining ionic membranes–semiconductors is studied for the remove of metallic ions from water. In this work, a new kind of cellulosic membranes was developed, improved by polyelectrolytes carboxy-methyl cellulose (CMC) or polyethyleneimine (PEI) integration that are highly permeable to heavy metals using dioctyle phtalate (DOP) as plasticizer. The characterization of all synthesized membranes was achieved by thermogravimetric analysis (TGA), Attenuated Total Reflectance infrared spectroscopy and contact angles. In other side, two semiconductors namely n-Ca2Fe2O5 and p-Ca2Co2O5 were prepared by nitrates route. As application the photo-electrodialysis was examined to reduce metallic cations Cd2+ under solar and artificial light. The results indicated that the association of p-Ca2Co2O5/membranes/n-Ca2Fe2O5 improves significantly the transport and the migration of heavy metals toward the cationic membrane and provide appreciable reduction percentages. The combination between membranes and semiconductors was realized to purify a polluted water by cadmium (toxic metal). The residual concentrations of heavy metal after treatment were determined by atomic absorption spectroscopy (AAS). Semiconductors have given considerable photo-catalytic results. The treatment of a cadmium solution at 50 mg/L gave a very appreciable yield of the photo-reduction for 5 h under solar irradiation.