http://www.cnr.it/ontology/cnr/individuo/prodotto/ID55125
Removal of As(V) by PVDF hollow fibers membrane contactors using Aliquat-336 as extractant (Articolo in rivista)
- Type
- Label
- Removal of As(V) by PVDF hollow fibers membrane contactors using Aliquat-336 as extractant (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
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- Bey S.; Criscuoli A.; Figoli A.; Leopold A.; Simone S.; Benamor M.; Drioli E. (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Organic Materials laboratory Targa Ouzemour, 06000, Bejaïa University, Algeria
Institute on Membrane Technology (ITM-CNR), Via P. Bucci 17/c, 87036 Rende (CS), Italy
Polytechnic University of Barcelona, Spain (literal)
- Titolo
- Removal of As(V) by PVDF hollow fibers membrane contactors using Aliquat-336 as extractant (literal)
- Abstract
- In this work, the removal of As(V) from an aqueous stream by non-dispersive solvent extraction in a hollow
fibre membrane contactor was investigated. To this purpose, microporous hydrophobic poly(vinylidene
fluoride) hollow fibres were prepared by the dry/wet spinning technique. Fibres were spun, changing the pore
forming additives, to obtain micro-porous sponge-like structure membranes, with pore diameters of about
0.2 ?m and porosity of 80%. The produced fibres were used to perform As(V) extraction experiments in a
membrane contactor device, using Aliquat-336 as extractant. Different tests were carried out in order to study
the effect of temperature, initial concentration, pH of the feed solution and membrane properties. The results
showed that the extraction of As(V) by non-dispersive solvent extraction was influenced by the pH of the
feed, with an optimum reached for neutral values, increased with the arsenic content in the feed and was not
affected by temperature. The extraction was favoured by working with thinner membranes. The highest
removal of arsenic achieved was around 70% after 6 h of operation. The produced fibres kept their
performance for all the experimental activity, giving reproducible results with time. (literal)
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