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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Novel high flux antifouling nanofiltration membranes for dye removal containing carboxymethyl chitosan coated Fe3O4 nanoparticles
Desalination, Volume 349, Year 2014
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Description
In this study, polyethersulfone (PES) nanofiltration membranes were synthesized by blending of O-carboxymethyl chitosan/Fe3O4 nanoparticles via the phase inversion method. O-carboxymethyl chitosan bound Fe3O4 magnetic nanoparticles (CC-Fe3O4 NPs) were synthesized by the binding of carboxymethyl chitosan (CC) onto the surface of Fe3O4 magnetic nanoparticles via co-precipitating method. The modified membranes had considerably higher pure water flux and permeation compared to the unfilled PES membrane. Surface hydrophilicity of the modified membranes was improved due to water affinity improvement of the membrane surface. However, high content of CC-Fe3O4 NPs (>0.5%) in the casting solution diminished membrane performance due to agglomeration of the nanoparticles in the polymer matrix. The antifouling properties of the membranes were evaluated by powder milk solution and measuring the pure water flux recovery ratio (FRR). The 0.5wt.% CC-Fe3O4 NPs-PES membrane exhibited the highest FRR value (91.7%) and the lowest irreversible fouling resistance (Rir) value (8.33%). Nanofiltration performance was also examined by retention of Direct Red 16 dye. As a conclusion, the addition of CC-Fe3O4 NPs at lower concentration could result in membranes with superior pure water flux, higher rejection and good fouling resistance compared to the unfilled PES membrane. © 2014 Elsevier B.V.
Authors & Co-Authors
Zinadini, Sirus
Iran, Kermanshah
Razi University
Zinatizadeh, Ali Akbar
Iran, Kermanshah
Razi University
Rahimi, Masoud
Iran, Kermanshah
Razi University
Vatanpour, Vahid
Iran, Tehran
Kharazmi University
Zangeneh, Hadis
Iran, Kermanshah
Razi University
Statistics
Citations: 246
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.desal.2014.07.007
ISSN:
00119164
Research Areas
Environmental