Publications
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Mathematical modelling of membrane separation processes KU Leuven
This PhD thesis is dedicated to the modelling of membrane separation processes. During this research, models have been developed for the following processes: direct contact membrane distillation (DCMD), sweeping gas membrane distillation (SGMD) and anaerobic membrane bioreactors (AnMBRs) equipped with the magnetically induced membrane vibration (MMV) system. The proposed models for DCMD and SGMD are general predictive. In particular, these ...
Integrated Membrane Separation Processes for Recycling of Valuable Wastewater Streams: Nanofiltration, Membrane Distillation, and Membrane Crystallizers Revisited KU Leuven
One of the suggestions made by Enrico Drioli to the membrane community for many years is to work on a radical change from conventional separation and conversion methods to membrane-based separation methods, making use of integrated systems combining a range of membrane separation processes. This paper looks back at these ideas, taking a joint paper written by myself with Efrem Curcio and Enrico Drioli and published in 2004, as a reference. Three ...
Measuring spatial separation processes through the minimum commute: the case of Flanders Vrije Universiteit Brussel
The average distance covered by individual commuting trips increases year after year, regardless of the travel mode. The causes of this phenomenon are diverse. Although increasing prosperity is often invoked as the main reason, the discipline of spatial planning also points to the relevance of land-use policies that enable processes of suburbanization and sprawl. By calculating time series of spatially disaggregated theoretical minimum commuting ...
Intensified Crystallization Processes for the Separation of Enantiomers KU Leuven
Molecular chirality is an important geometrical property with far-reaching implications in the pharmaceutical, food and agrochemical industries. Chiral molecules can exist in two non-superimposable mirror-image forms called enantiomers, which often possess substantially different biological effects. Since most chemical synthetic processes of chiral molecules result in an equimolar mixture of both enantiomers, referred to as a racemic mixture, ...
Adsorptive separation using self-assembly on graphite: from nanoscale to bulk processes KU Leuven
Adsorptive separation is a promising lower-energy alternative for traditional industrial separation processes. While carbon-based materials have a long history in adsorptive removal of organic contaminants from solution or gas mixtures, separation using an adsorption/desorption protocol is rarely considered. The main drawbacks are the limited control in bulk adsorption experiments, as often all organic molecules are adsorbed, and lack of ...
Design, Modelling and Benchmarking of Photoreactors and Separation Processes for Waste Treatment and Purification KU Leuven
Photochemistry is a research field with high potential, promising important future industrial and environmental applications such as pollutant removal, CO2 reduction back to fuel, alternative solar energy storages and novel materials. On the other hand, making these promises feasible and therefore applied, falls within the purpose of photoreactor design branch of chemical engineering science. However, photoreactor design could not yet live up to ...
Exergetic life cycle analysis for the selection of chromatographic separation processes in the pharmaceutical industry : preparative HPLC versus preparative SFC Ghent University
Today, environmentally responsible chemistry is of huge importance in the wake of sustainable production. In the field of the. ne chemical and pharmaceutical industry, preparative supercritical fluid chromatography (Prep-SFC) and preparative high performance liquid chromatography (Prep-HPLC) are widely used chiral separation techniques. Prep-SFC is often named as a green alternative for Prep-HPLC without having a thorough assessment of the ...
Insights in column packing processes of narrow bore and capillary-scale columns: Methodologies, driving forces, and separation performance – A tutorial review Vrije Universiteit Brussel
Having fundamental insights in the properties of stationary phases and in the driving forces during the column packing process, is crucial to obtain highly efficient and robust packed-bed column technologies for use in separation science. Here we discuss the properties of the most commonly-used stationary-phases, i.e., silica particulate materials, including fully-porous and core-shell silica particles and provide an overview of the most ...
Time delay compensation for the secondary processes in a multivariable carbon isotope separation unit KU Leuven Ghent University
Time delays occur frequently in process control systems and uncertainties regarding modeling of such phenomena limit the degree of freedom of the designed controllers. The problem is even more acute when dealing with multivariable systems. To overcome the difficulties in the controller design, Smith predictor control schemes are frequently used. The paper proposes a simple, yet efficient, novel control strategy for solving the delay time ...