Preparation and Characterization of PVDF/g-C3N4/Chitosan Polymeric Membrane for the Removal of Direct Blue 14 Dye

Polyvinylidene fluoride (PVDF)/g-C 3 N 4 /Chitosan thin film membranes were prepared by immersing of PVDF/g-C 3 N 4 membrane in solution containing various concentrations of chitosan for removal of Direct Blue 14 dye (an anionic dye) from aqueous solutions. The resulting membranes were characterized...

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Bibliographic Details
Published in:Journal of polymers and the environment 2021-11, Vol.29 (11), p.3693-3702
Main Authors: Hassanzadeh, Parya, Gharbani, Parvin, Derakhshanfard, Fahimeh, Memar Maher, Behnaz
Format: Article
Language:English
Subjects:
Antifouling
Antifouling substances
Aqueous solutions
Carbon nitride
Chemistry
Chemistry and Materials Science
Chitosan
Dyes
Environmental Chemistry
Environmental Engineering/Biotechnology
Industrial Chemistry/Chemical Engineering
Materials Science
Membrane processes
Membranes
Moisture content
Original Paper
Polymer Sciences
Polyvinylidene fluorides
Rejection
Salt rejection
Thin films
Water content
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Summary:Polyvinylidene fluoride (PVDF)/g-C 3 N 4 /Chitosan thin film membranes were prepared by immersing of PVDF/g-C 3 N 4 membrane in solution containing various concentrations of chitosan for removal of Direct Blue 14 dye (an anionic dye) from aqueous solutions. The resulting membranes were characterized by XRD, FESEM, TEM and AFM. Also, pure water flux, salt rejection, water content and antifouling properties of prepared membranes were investigated. The resulting demonstrate that pure water flux was decreased (from 70.98 to 14.7%) by increasing of chitosan concentration (2–4%), while water content (42.5–94.78%), salt rejection (from 62.66 to 88.98%) and antifouling properties were increased. It is found that chitosan has major impact on the membrane structural properties due to transform of the PVDF membrane into hydrophilic ones. It is reported that maximum 93% rejection of Direct Blue 14 was obtained by PCC3 (PVDF/g-C 3 N 4 -chitosan 4% w/v) membrane. Compared to the PVDF/g-C 3 N 4 membrane, the experimental results showed that PVDF/g-C 3 N 4 /Chitosan membranes demonstrated high potential mainly due to greater hydrophilicity and further minimizing membrane fouling.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-021-02145-y