Performance test of novel membrane regarding water permeability, fouling behavior and dye rejection (Abstract/Comunicazione in atti di convegno)

Type
Label
  • Performance test of novel membrane regarding water permeability, fouling behavior and dye rejection (Abstract/Comunicazione in atti di convegno) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • F. Galiano, S. A. Deowan, Alberto Figoli, J. Hoinkis, L. Veltri, B. Gabriele (2012)
    Performance test of novel membrane regarding water permeability, fouling behavior and dye rejection
    in "Assessment of Biotechnological Practices" at the "1st WATERBIOTECH conference", Il Cairo (Egitto), 09-11/10/2012
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Galiano, S. A. Deowan, Alberto Figoli, J. Hoinkis, L. Veltri, B. Gabriele (literal)
Note
  • Comunicazione (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Membrane Technology, ITM-CNR, University of Calabria, Cosenza, Italy. Karlsruhe University of Applied Sciences, Karlsruhe, Germany. Department of Chemistry, University of Calabria, Cosenza, Italy. (literal)
Titolo
  • Performance test of novel membrane regarding water permeability, fouling behavior and dye rejection (literal)
Abstract
  • With the increasing global water demand, water has become a progressively important but scarcer resource for human being. Water pollution is one of the most relevant environmental problems essentially due to increases in population and an increase in industrialization. In order to overcome and reduce this phenomenon membrane separation techniques are widely and successfully used for water purification processes. In the present work, water permeability performances of novel hydrophilic membranes (PBM) prepared by coating a polymerisable bicontinuous micromeulsion on a commercial PES membrane were studied. If it is compared with PES commercial membranes without coating, PBM membranes showed a reduction of water permeability (from about 400-500 L/m2hbar for commercial membrane to about 100-200 L/m2hbar for PBM membrane) due to the narrower pore size of the latter ones. Our aim was, in fact, to produce nanostructured membranes to be applied for water purification and in particular for the removal of dyes that can be encountered, for example, in textile wastewater. Nowadays textile industries are one of the main responsible of water usage and pollutants production related to the manufacturing processes. These pollutants are generally represented by salts, organic compounds (dyes), heavy metals and suspended solids. For dye rejection tests, a model dye solution (red and blue), was used in order to evaluate membrane color rejection. PBM membranes presented a higher dye rejection in comparison to commercial membrane of about 10-15% for blue and about 10% for red color. Fouling behavior of PBM and commercial membranes was also studied by using a model foulant (humic acid) and its effect on membrane performances was also evaluated. Though PBM membrane water permeability was about one third of commercial membrane, both permeabilities were almost the same (about 150 L/m2hbar) when the tests were carried out with humic acid. Furthermore, after backflushing, PBM membranes regained upto 44% while commercial membrane regained only 11%. These results indicated that PBM membranes were less affected by organic fouling. ACKNOWLEDGMENT The work is funded by Bionexgen (grant agreement n. CP-FP- 246039-2 ) EU-FP7/project. (literal)
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