TY - JOUR
T1 - Characterization of membrane–foulant interactions with novel combination of Raman spectroscopy, surface plasmon resonance and molecular dynamics simulation
AU - Virtanen, Tiina
AU - Parkkila, Petteri
AU - Koivuniemi, Artturi
AU - Lahti, Jussi
AU - Viitala, Tapani
AU - Kallioinen, Mari
AU - Mänttäri, Mika
AU - Bunker, Alex
N1 - Funding Information:
The authors would like to thank Eija Saski for discussions. This research was funded by the Academy of Finland (Grant No. 292253 and No. 288619 ). The computational work carried out using the resources of the CSC-IT Centre for Science Ltd. (CSC). We also express special thanks to Xue Zhang and KSV-NIMA for collaborating with the AFM and PM-IRRAS experiments, respectively.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/10/31
Y1 - 2018/10/31
N2 - 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 interaction of the PES membrane with vanillin that can be used in the development of anti-fouling coatings, based on the structure of vanillin.
AB - 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 interaction of the PES membrane with vanillin that can be used in the development of anti-fouling coatings, based on the structure of vanillin.
KW - Adsorption
KW - Fouling
KW - Label-free analytics
KW - Polymer membrane
KW - Spin coating
UR - http://www.scopus.com/inward/record.url?scp=85047396107&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2018.05.050
DO - 10.1016/j.seppur.2018.05.050
M3 - Article
AN - SCOPUS:85047396107
SN - 1383-5866
VL - 205
SP - 263
EP - 272
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -