Chromium(VI) Removal by Polyvinyl Chloride (PVC)/Aliquat-336 Polymeric Inclusion Membranes in a Multiframe Flat Sheet Membrane Module

A new multiframe flat sheet membrane contactor module containing several flat membranes was designed and implemented. Each frame contains a chamber (central hole) in which the feed and the receiving phases are put in contact with polyvinyl chloride (PVC)/Aliquat-336 polymeric flat sheet membranes fo...

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Bibliographic Details
Published in:Applied sciences 2019, Vol.9 (15), p.2994
Main Authors: Semghouni, Hassina, Bey, Said, Figoli, Alberto, Criscuoli, Alessandra, Russo, Francesca, Mohamed, Benamor, Drioli, Enrico
Format: Article
Language:English
Subjects:
Agrochemicals
Aliquat
Aliquat-336
Aluminum
Aqueous solutions
Cadmium
Chromium
Cobalt
Contact angle
Cr(VI)
Design of experiments
Evaporation
experimental design
Gold
Health risks
Membranes
Metal ions
multiframe membrane module
Organic compounds
Permeability
Pesticide toxicity
Pesticides
Polymers
Polyvinyl chloride
PVC
Separation
Solvents
Toxicity
Zinc
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Summary:A new multiframe flat sheet membrane contactor module containing several flat membranes was designed and implemented. Each frame contains a chamber (central hole) in which the feed and the receiving phases are put in contact with polyvinyl chloride (PVC)/Aliquat-336 polymeric flat sheet membranes for Cr(VI) removal from aqueous solutions (feed phase). To evaluate the efficiency of the system, the experimental design methodology was used to analyze the effect of temperature (T, °C), PVC/Aliquat-336 ratio, and Cr (VI) concentration in the feed phase and the concentration of sodium chloride (NaOH-NaCl) in the receiving phase. Two representative mathematical models of the two responses (extraction and back-extraction) were respectively obtained. A good correlation between the experimental results and those predicted (RS2 = 97.77 and RR2 = 97.87) was achieved, allowing the optimization of the different factors selected for each response, separately. The proposed system showed a good separation performance, leading to Cr(VI) extractions up to 93% when working at the optimized operating conditions.
ISSN:2076-3417
2076-3417
DOI:10.3390/app9152994