6533b859fe1ef96bd12b773c
RESEARCH PRODUCT
Preparation of polyelectrolyte-modified membranes for heavy metal ions removal
Boris LakardM. EuvrardM. A. MokhterS. LakardC. Magnenetsubject
inorganic chemicalsMetal ions in aqueous solutionInorganic chemistryUltrafiltration02 engineering and technology010402 general chemistry01 natural sciencesWater PurificationMetalchemistry.chemical_compoundAdsorptionCationsMetals HeavyEnvironmental Chemistry[CHIM]Chemical SciencesWaste Management and DisposalComputingMilieux_MISCELLANEOUSWater Science and TechnologyIonsAqueous solutionChemistryGeneral Medicine021001 nanoscience & nanotechnologyPolyelectrolytesPolyelectrolyte0104 chemical sciencesSulfonateMembranevisual_artvisual_art.visual_art_mediumAdsorption0210 nano-technologyFiltrationdescription
ABSTRACTPolyethersulfone membranes were modified by polyelectrolyte (PE) multilayers, made of poly(allylamine hydrochloride) with poly(styrene sulfonate), to remove Cu2+, Zn2+ and Ni2+ heavy metal cations from aqueous solutions in a wide range of metal concentration (50–1200 ppm). After characterization of the modified membranes, the efficiency of the process was estimated for single heavy metal ions solution leading to high rejection rates (>90% for 50 ppm) and good adsorption capacities (7.0–8.5 mg cm−2) whatever the metal ion tested. The stability in time of the modified membranes was proved by repeating successive filtrations with the same membrane. The filtration process was also used with mixed solutions composed of Cu2+, Zn2+ and Ni2+ ions. The rejection rates obtained for these ternary systems were very similar to the ones obtained for the single metal solutions, showing that the filtration process is still efficient for mixed solutions and can be applied for the decontamination of complex solutio...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-12 |