Fundamental research on phase inversion as a preparation method for solvent resistant nanofiltration membranes: application on self-prepared, modified poly(ether ether ketone) membranes. KU Leuven
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Vitamin E is essential in many biological processes, such as in immune system functions and in protecting against cell damage.
However, vitamin E blood levels are below the desirable value for a large part of the global population. Therefore, vitamin E is often synthesized as an additive dietary supplement. In this production process, toluene is used during the work-up of alpha-tocopherol, which is the most biologically active form of ...
This project will characterize the performance of state-of-the-art polymeric membrane chemistries at enhanced pressure and temperatures for a selection of industrially relevant solvent classes. General structure-property relationships will be formulated to describe the behavior of the diverse membrane classes at these challenging conditions. This fundamental knowledge will allow both short-term implementation of solvent-resistant ...
Various fabrication methods and different polymers have been applied in recent years to synthesize membranes. Combined with current membrane fabrication methods and commercial polymers, almost all kinds of polymeric membrane ranging from porous microfiltration membranes to dense reverse osmosis membranes have been fabricated in academic and commercial environments. However, membranes synthesized by currently used methods and polymers cannot ...
With the current, worldwide growth of industry comes an immense environmental impact. As the pharma, dairy and mining industry utilise a great deal of organic solvents and produce waste streams potentially containing harmful components, purification and separation is needed. Currently, these processes are done using energy-consuming techniques, often in combination with high temperatures. The use of membranes for solvent-resistant ...
Developing polymer-based membranes for aqueous nanofiltration and for solvent resistant to significantly extend the range of streams that can be treated with current membranes.
Polymer membranes are prized as a low-energy, low-maintenance and low-cost alternative to conventional separation processes. Polymers of intrinsic microporosity (PIMs) have shown exceptional separation properties due to their rigid and contorted backbone. Many PIMs have been described, but little research effort has been invested in developing polymers which can be fine-tuned in a stepwise fashion. Therefore, this dissertation describes the ...
Producing biobased chemicals and substituting energy-intensive separation processes are integral parts of a sustainable chemical industry. However, the downstream separation and purification of lignin-based aromatic biochemicals are challenging. Therefore, this research explores the benefits that organic solvent nanofiltration can bring to the downstream separation process of these aromatic compounds.
Different nanofiltration ...
This Renovate project examines the extent to which solvent-stable nanofiltration and ultrafiltration membranes are able to contribute to higher-quality polymer recycling by selectively removing problematic molecules, such as REACH additives or colour. To this end, new types of membranes will be made and tested to remove the additives from solutions of recycled polymer mixtures. These membranes will be compared with commercially available ...