Reduction of nanofiltration membrane fouling by UV-initiated graft polymerization technique



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Abu Seman, M. N. and Khayet Souhaimi, Mohamed and Bin Ali, Z. I. and Hilal, N. (2010) Reduction of nanofiltration membrane fouling by UV-initiated graft polymerization technique. Journal of membrane science, 355 (01-feb). pp. 133-141. ISSN 0376-7388

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Nanofiltration polyethersulfone membrane has been modified by means of UV-initiated graft polymerization technique using the weakly acidic monomer acrylic acid and the immersion method. Different UV-irradiation times and acrylic acid concentrations in water were studied. Both the unmodified and the modified polyethersulfone nanofiltration membranes were characterized by attenuated total reflection-Fourier transform infrared spectra (FTIR-ATR) and atomic force microscopy (AFM). Irreversible membrane fouling has been studied by using humic acid model solutions at two different pH values (7 and 3). It was observed that some modified membranes exhibited higher permeance than the unmodified polyethersulfone nanofiltration membrane. The humic acid rejection factor was higher for all modified membranes compared to the unmodified membrane and the irreversible fouling by humic acid molecules was reduced after UV-initiated graft polymerization by acrylic acid.

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© 2010 Elsevier B.V. One of the authors M. Khayet is thankful to the University Complutense of Madrid (UCM) for the grant.

Uncontrolled Keywords:Sulfone ultrafiltration membranes; Natural rrganic-matter; Low-temperature plasma; Surface modification; Poly(Ether sulfone); Photochemical modification; Antifouling characteristics; Microporous membranes; Synthetic membranes; Humic substances
Subjects:Sciences > Physics > Thermodynamics
ID Code:26336
Deposited On:21 Jul 2014 10:07
Last Modified:12 Nov 2015 14:47

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