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Surface characterisation of biofouled NF membranes: role of surface energy for improved rejection predictions

(2012) WATER SCIENCE AND TECHNOLOGY. 66(10). p.2122-2130
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Abstract
Biomass attachment and growth on high pressure membranes alter the surface characteristics and rejection performance of nanofiltration membranes. Along with electrostatic interaction and size exclusion, hydrophobic interaction between solutes and membrane surface play the major role in the separation process. Therefore, in attempt to properly quantify the surface energy of clean and biofouled membranes, different contact angle techniques were applied in this research. The surface energies of membranes were determined on dry, wet and hydrated surfaces. Results indicate that drying of the membrane surface leads to a modification of the surface properties, which are therefore not representative of the membrane in its operational conditions. Immersing the membrane in water resulted in detachment of biomass material into the surrounding liquid, thus hampering a correct estimation of the contact angle. Contact angle measurements on hydrated surfaces, on the contrary, produced reproducible results, which are consistent with current knowledge. In addition, when the values obtained by hydrated method were applied in a predictive model earlier developed, a significant improvement in predictions resulted.
Keywords
nanofiltration, pharmaceuticals, biofouling, rejection, surface characterisation, REVERSE-OSMOSIS MEMBRANES, CONTACT-ANGLE MEASUREMENTS, NANOFILTRATION MEMBRANES, ORGANIC SOLUTES, ELECTROSTATIC INTERACTIONS, WATER, ADSORPTION, EPS

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Chicago
Botton, Sabrina, Arne Verliefde, Nhut T Quach, and Emile Cornelissen. 2012. “Surface Characterisation of Biofouled NF Membranes: Role of Surface Energy for Improved Rejection Predictions.” Water Science and Technology 66 (10): 2122–2130.
APA
Botton, S., Verliefde, A., Quach, N. T., & Cornelissen, E. (2012). Surface characterisation of biofouled NF membranes: role of surface energy for improved rejection predictions. WATER SCIENCE AND TECHNOLOGY, 66(10), 2122–2130.
Vancouver
1.
Botton S, Verliefde A, Quach NT, Cornelissen E. Surface characterisation of biofouled NF membranes: role of surface energy for improved rejection predictions. WATER SCIENCE AND TECHNOLOGY. 2012;66(10):2122–30.
MLA
Botton, Sabrina, Arne Verliefde, Nhut T Quach, et al. “Surface Characterisation of Biofouled NF Membranes: Role of Surface Energy for Improved Rejection Predictions.” WATER SCIENCE AND TECHNOLOGY 66.10 (2012): 2122–2130. Print.
@article{3262320,
  abstract     = {Biomass attachment and growth on high pressure membranes alter the surface characteristics and rejection performance of nanofiltration membranes. Along with electrostatic interaction and size exclusion, hydrophobic interaction between solutes and membrane surface play the major role in the separation process. Therefore, in attempt to properly quantify the surface energy of clean and biofouled membranes, different contact angle techniques were applied in this research. The surface energies of membranes were determined on dry, wet and hydrated surfaces. Results indicate that drying of the membrane surface leads to a modification of the surface properties, which are therefore not representative of the membrane in its operational conditions. Immersing the membrane in water resulted in detachment of biomass material into the surrounding liquid, thus hampering a correct estimation of the contact angle. Contact angle measurements on hydrated surfaces, on the contrary, produced reproducible results, which are consistent with current knowledge. In addition, when the values obtained by hydrated method were applied in a predictive model earlier developed, a significant improvement in predictions resulted.},
  author       = {Botton, Sabrina and Verliefde, Arne and Quach, Nhut T and Cornelissen, Emile},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  keyword      = {nanofiltration,pharmaceuticals,biofouling,rejection,surface characterisation,REVERSE-OSMOSIS MEMBRANES,CONTACT-ANGLE MEASUREMENTS,NANOFILTRATION MEMBRANES,ORGANIC SOLUTES,ELECTROSTATIC INTERACTIONS,WATER,ADSORPTION,EPS},
  language     = {eng},
  number       = {10},
  pages        = {2122--2130},
  title        = {Surface characterisation of biofouled NF membranes: role of surface energy for improved rejection predictions},
  url          = {http://dx.doi.org/10.2166/wst.2012.430},
  volume       = {66},
  year         = {2012},
}

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