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msc
thesis/internship project: modification of polyelectrolyte multilayer nanofiltration membranes for enhanced stability and tailored selectivity in water treatment

Type of project: MSc Thesis/internship
Anticipated start: from January, 2025
Duration: >5 months
Location: Wetsus, European center of excellence for sustainable water technology (Leeuwarden, the Netherlands)

Project description:
In recent years, polyelectrolyte multilayer (PEM) nanofiltration (NF) membranes have shown significant advancements in separation properties for various applications. A key advantage of these membranes lies in the versatility of the layer-by-layer (LbL) technique, which allows for precise tuning of the chemistry and performance of NF membranes, enabling them to go beyond the capabilities of conventional NF membranes. Especially, PEM membranes based on PDADMAC (poly(diallyldimethylammoniumchloride)) and PSS (poly(sodium 4-styrenesulfonate)) show excellent chemical stability, allowing for operation at extreme pH conditions and cleaning with hypochlorite. However, a significant drawback of PDADMAC/PSS-based membranes is their reduced stability in highly saline streams, as the ionic bonds that hold the PEM layer together weaken. This project aims to explore various crosslinking methods to introduce covalent bonds, thereby enhancing membrane stability and fine-tuning membrane selectivity for specialized water treatment applications.

Your profile:

  • Background in chemical/environmental engineering, material science, physical chemistry, or related fields;
  • Experience and knowledge in membrane technology would be a plus.
  • highly motivated, enthusiastic, and willing to learn about membrane technology, and surface chemistry;
  • Established hands-on laboratory and instrument experience would be a plus.
  • Fluent in English and good English writing skills
  • EU citizen or non-EU citizen already enrolled in a Dutch university and living in the Netherlands.

Offers & Benefits:

  • Allowance: The allowance for students is €200. The student can apply for ‘Wetsus Grant’ allowance (€200 extra; an internal committee decides if the allowance will be granted*)
  • Collaborative interaction within a dynamic, multidisciplinary and multinationals research team between Wetsus and University of Twente.
  • You would be part of a big EU project with industrial partners where you have the chance to expand your network and improve your skills

*The Wetsus Grant allowance is not guaranteed and must be approved by the Grant Committee.

How to apply:
Please upload your cv (max 2 A4 pages), motivation letter (max. 1 A4 page), and a list of the attended courses and the equivalent ECTS via the application form provided below (in English). Feel free to contact Xiao Zhang (xiao.zhang@wetsus.nl) if you have further questions or need more information.

Application form; Modification of polyelectrolyte multilayer nanofiltration membranes for enhanced stability and tailored selectivity in water treatme

  • Max. bestandsgrootte: 1 GB.
  • Max. bestandsgrootte: 1 GB.

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