Publication Date:
2017-10-21
Description:
Chitosan-functionalized graphene oxide (CS–GO) was synthesized and incorporated into PVDF ultrafiltration membrane. The effect of CS–GO addition on the morphology and membrane performance was studied with water contact angle (CA), scanning electron microscopy (SEM), atomic force microscopy (AFM), porosity and pore size, permeation measurements, rejection tests and antifouling experiments. We found that the water flux of CS–GO/PVDF composite membrane increased by 44% after incorporating 0.6 wt% of CS-GO into the PVDF matrix versus pristine PVDF membrane. In addition, the CS-GO/PVDF membrane exhibited higher water flux, BSA rejection rate, water flux recovery ratio and lower BSA solution flux attenuation rate than unfilled PVDF membranes, CS/PVDF, and GO/PVDF membranes. The excellent water permeability and antifouling performance can be attributed to the high hydrophilicity and good dispersion of CS–GO in the matrix.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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