Abstract
AbstractIn this study, a novel thin‐film nanocomposite (TFN) membrane is developed consisting of a cross‐linked nano‐modified polyvinyl alcohol (PVA) selective layer on an organic acid‐modified polyvinylidene fluoride (PVDF) membrane. The nano‐modification of the PVA layer is performed via incorporating different amounts of the amine‐functionalized multiwalled carbon nanotubes (MWCNTs‐NH2) into the PVA matrix. The effect of citric acid on the chemical structure and morphology of the PVDF support is also investigated. The performance of the resultant membranes in the nanofiltration (NF) of MgSO4 and acid yellow‐17 aqueous solutions is also studied. The results indicate that the modification of the support with 0.5 wt% of citric acid increased the water permeance from 1.59 L m−2 h−1 bar−1 (LMH/bar) for PVA/PVDF to 4.49 LMH/bar for the PVA/modified PVDF membrane. Furthermore, the optimum value of MWCNT‐NH2 (0.6 wt%) increases the permeance of the resultant TFN membrane to 4.94 LMH/bar while maintaining a high rejection. Interestingly, the incorporation of MWCNT‐NH2 into the PVA layer and citric acid into the PVDF solution results in a membrane with the highest permeance of 6 LMH/bar.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
