A1 Journal article (refereed), original research

Characterization of membrane–foulant interactions with novel combination of Raman spectroscopy, surface plasmon resonance and molecular dynamics simulation


Publication Details
Authors: Virtanen Tiina, Parkkila Petteri, Koivuniemi Artturi, Lahti Jussi, Viitala Tapani, Kallioinen Mari, Mänttäri Mika, Bunker Alex
Publisher: Elsevier
Publication year: 2018
Language: English
Related Journal or Series Information: Separation and Purification Technology
Volume number: 205
Start page: 263
End page: 272
Number of pages: 10
ISSN: 1383-5866
eISSN: 1873-3794
JUFO-Level of this publication: 2
Open Access: Not an Open Access publication

Abstract

Adsorptive fouling, by phenolic compounds, is a serious issue regarding the development and use of membrane based filtration technologies for water purification and wastewater treatment. We have developed a novel, combined, protocol of Raman spectroscopy and surface plasmon resonance (SPR) experiments, along with molecular dynamics (MD) simulation, to study the interaction of vanillin, a model phenolic compound, with the polyethersulfone (PES) surface of a membrane. The adsorption of vanillin to the PES surface was found to be highly pH dependent; the source of this was determined, by MD simulation, to be the stronger interaction with the protonated form of vanillin, predominant at low pH. Vanillin interacts with the PES surface, both through entropy driven, hydrophobic, interactions and, for the case of the protonated form, H-bonding of the hydroxyl group with the sulphur oxygens of the PES molecules. In addition to general insight into the fouling process that can be used to develop new methods to inhibit adsorptive fouling, our results also elucidate the specific inter- action of the PES membrane with vanillin that can be used in the development of anti-fouling coatings, based on the structure of vanillin.


Last updated on 2019-13-03 at 12:00