In-operando characterization of organic solvent nanofiltration membranes

In many industries, a large amount of wastewater is produced and recycling of this water can be beneficial, both economically and ecologically. Hydrocarbons are known contaminants of wastewater streams. These hydrocarbons affect the stability of the current generation of membranes. An example of this is found in the oil and gas industry, where recycle water is desalinated for Enhancement Oil Recovery. The hydrocarbons have a negative effect on the performance of the desalination membranes.

In this project, the stability of high-performance solvent resistant nanofiltration (SRNF) membranes will be studied under conditions mimicking the industrial operating environment of these membranes. Using a technique called ellipsometry, various changes in a film can be tracked in situ. By studying the swelling and dissolution kinetics and equilibria, we work towards forming a descriptive model for membrane performances.

During this project, the influence of parameters such as the temperature, solvent concentration and solvent type on membrane performance is studied. Based on a literature research, the student will choose relevant conditions for studying the membrane performance. The results will be analyzed by a thermodynamic and/or kinetic approach. Based on the ideas of the student, the project can be formulated more practical or theoretical.

For further information, contact:

Kristianne Tempelman

PhD candidate
Meander 236B

+31 53 489 4691
Email: k.tempelman@utwente.nl

Nieck Benes

Professor
Meander 329

+31 53 489 4288
Email: n.e.benes@utwente.nl