Publicaties
A highly efficient and energy-saving magnetically induced membrane vibration system for harvesting microalgae KU Leuven
The optimal operational parameters of a second generation magnetically induced membrane vibration (MMV) system were determined using the response surface methodology (RSM) combined with single-factor experiments. The membrane surfaces were characterized by scanning electron microscopy (SEM) and algae cell states by inverted microscopy. The effect of an intermittent vibration strategy on filtration performance and energy consumption was studied. ...
Magnetically induced membrane vibration (MMV) system for wastewater treatment KU Leuven
© 2018 Elsevier B.V. Membrane bioreactors (MBRs) are gaining more attention as they provide a viable alternative for conventional wastewater treatment. To operate efficiently, however, it is still key to select appropriate antifouling strategies. Fouling mitigation through vibration, as in the magnetically induced vibration (MMV) system, has been conceptually proven recently, but was never further optimized. This work presents a 2nd generation ...
Crosslinked PVDF membranes for aqueous and extreme pH nanofiltration KU Leuven
© 2018 Elsevier B.V. Loose poly(vinylidene difluoride) nanofiltration membranes were crosslinked using a one-pot reaction with para-xylenediamine in alkaline conditions. The crosslinking reaction was characterized using ATR-FTIR and EDX-based elemental analysis as function of reaction time. Upon crosslinking, the retention of the membranes improved dramatically for rose Bengal (RB) (from 90% to 100%) and MO (from 49% to 91%) without significant ...
Crosslinked PVDF-membranes for solvent resistant nanofiltration KU Leuven
© 2018 Elsevier B.V. Crosslinked poly(vinylidene difluoride) (PVDF) nanofiltration membranes were prepared and tested for solvent resistant nanofiltration (SRNF) and solvent tolerant nanofiltration (STNF, i.e. in solvent/water media) applications. The performance of the membranes was assessed by filtering ethanol (EtOH), iso-propanol (iPrOH), acetonitrile (ACN), dimethylformamide (DMF) or toluene (Tol) solutions containing Rose Bengal (RB), a ...
Simultaneous glucose production from cellulose and fouling reduction using a magnetic responsive membrane reactor with superparamagnetic nanoparticles carrying cellulolytic enzymes KU Leuven
This work aimed at investigating simultaneous hydrolysis of cellulose and in-situ foulant degradation in a cellulose fed superparamagnetic biocatalytic membrane reactor (BMRSP). In this reactor, a dynamic layer of superparamagnetic bionanocomposites with immobilized cellulolytic enzymes were reversibly immobilized on superparamagnetic polymeric membrane using an external magnetic field. The formation of a dynamic layer of bionanocomposites on ...
Improved MOF nanoparticle recovery and purification using crosslinked PVDF membranes KU Leuven
Crosslinked PVDF-membranes are demonstrated to offer a viable alternative for centrifugation in the preparation of MOF-particles, thus realising new opportunities at lab-scale and continuous production at large-scale. The membranes combine extreme-pH with solvent stability, thus enabling application in any MOF synthesis, demonstrated here for ZIF-8, ZIF-67, HKUST-1, UiO-66 and MIL-53(Al).
Development of a polyvinylidene difluoride membrane for nanofiltration KU Leuven
© 2018 Elsevier B.V. Integrally skinned asymmetric nanofiltration (NF) membranes are widely used for treating a variety of aqueous and solvent streams. Polyvinylidene difluoride (PVDF), is an excellent film forming polymer with outstanding chemical, thermal and mechanical stability. However, additive-free PVDF membranes with pores small enough to apply them in NF do not currently exist. By accurately tuning the phase inversion parameters (i.e. ...