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Improving antifouling performance for the harvesting of Scenedesmus acuminatus using Fe 2 O 3 nanoparticles incorporated PVC nanocomposite membranes
Author(s) -
Liu Qingling,
Demirel Elif,
Chen Yong,
Gong Ting,
Zhang Xuezhi,
Chen Yongsheng
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47685
Subject(s) - membrane , biofouling , fourier transform infrared spectroscopy , chemical engineering , attenuated total reflection , fouling , membrane fouling , materials science , chromatography , filtration (mathematics) , chemistry , nuclear chemistry , biochemistry , engineering , statistics , mathematics
ABSTRACT Membrane filtration provided a potential solution to get high quality microalgae biomass and recyclable medium. However, the fouling of membrane by microalgae cells and organic matter greatly affects membrane harvesting efficiency. In this study, membrane performance was tested in terms of flux declining and backwashing recovery for microalgal harvesting. Compared with the unmodified poly(vinyl chloride) (PVC) membrane, the membrane with 1.0% Fe 2 O 3 incorporation had a 66% increase in average flux, reaching 138 L m −  h −1 . Foulants on the membrane surface were characterized using attenuated total reflection‐Fourier transform infrared (ATR‐FTIR) and confocal laser scanning microscope (CLSM), as well as sodium hydroxide extraction followed by total organic carbon (TOC) quantification and fluorescence excitation–emission matrix (FEEM) identification of organic components. FEEM and TOC analysis of the extracted foulants revealed that the surface of 1.0% Fe 2 O 3 incorporated membrane had less fouling than the unmodified PVC membrane, which may be attributed to its hydrophilicity after Fe 2 O 3 incorporation. CLSM analysis and ATR‐FTIR analysis of the fouled membrane surface further revealed that the protein substance on the 1.0% Fe 2 O 3 incorporated PVC membrane was lower than those in the unmodified membrane, which further confirmed the enhanced antifouling performance of the 1.0% Fe 2 O 3 incorporated PVC membrane. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47685.

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