Publications
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Tuning the interaction between propagating and localized surface plasmons for surface enhanced Raman scattering in water for biomedical and environmental applications KU Leuven
With a view to biomedical and environmental applications, we investigate the plasmonic properties of a rectangular gold nanodisk array in water to boost surface enhanced Raman scattering (SERS) effects. To control the resonance wavelengths of the surface plasmon polariton and the localized surface plasmon, their dependence on the array period and diameter in water is studied in detail using a finite difference time domain method. A good ...
Application of a spatially distributed water balance model for assessing surface water and groundwater resources in the Geba basin, Tigray, Ethiopia KU Leuven Ghent University
The Geba basin is one of the most water-stressed areas of Ethiopia, with only a short rainy period from mid-June to mid-September. Because rainfall in this region has been consistently erratic in the last decades, both in time and space, rain-fed agriculture has become problematic. Hence, in order to supplement rain-fed agriculture by irrigation, a detailed understanding of local and regional surface water and groundwater resources is important. ...
Does soil water saturation mobilize metals from riparian soils to adjacent surface water? A field monitoring study in a metal contaminated region KU Leuven
In the Noorderkempen (NW Belgium), a large area (about 280 km(2)) is contaminated with cadmium (Cd) and zinc (Zn) due to historical pollution by the Zn smelters. Direct aquatic emissions of metals have diminished over time, however the surface water metal concentration largely exceeds quality standards, mainly during winter periods. Monitoring data were analyzed to reveal whether these fluctuations are related to seasonal redox reactions in ...
Removal of micro-pollutants by nanofiltration from surface water in terms of drinking water production KU Leuven
Four nanofiltration membranes DESAL 51 HL DESAL 5 DL UTC-20 and UTC-60 are used to investigate the possibility of drinking water production from surface water by nanofiltration. It shows that the removal efficiency of COD and Abs at UV254 are 50%̃95 %, and the highest rejection is obtained by UTC-20. In addition, DESAL 51 HL, DESAL 5 DL and UTC-60 have 22%̃65% rejection for inorganic matter while UTC-20 reached 93%. Considerable rejection of ...
The wicked problem the water framework directive cannot solve. The governance approach in dealing with pollution of nutrients in surface water in the Netherlands, Flanders, Lower Saxony, Denmark and Ireland University of Antwerp
The Water Framework Directive (WFD) is typically a framework directive that tries to encourage integration of policies for water quality and agriculture. Nutrients (nitrates, phosphates) from agricultural sources remain a ‘wicked problem’ in realizing the aims of the WFD, partly because the directive has to rely on other, neighboring policies to tackle to problem pressure of nutrients; it seems to lack instruments and measures to directly ...
Impact of surface water reservoirs on ground water reserves in the highlands of Northern Ethiopia, Tigray region Ghent University
Advanced nutrient removal from surface water by a consortium of attached microalgae and bacteria : a review Ghent University KU Leuven
Monitoring surface water area changes in the Aral Sea Basin using the Google Earth Engine cloud platform Ghent University Vrije Universiteit Brussel
The surface water area and types in the Aral Sea Basin (ASB) have undergone extensive changes due to the impacts of climate change and anthropogenic activities. This study explores the changes in the surface water area in the ASB based on the Google Earth Engine cloud platform. Then, we integrate multi-source data to identify 1559 lakes and 196 reservoirs from the Joint Research Centre Global Surface Water (JRC GSW) dataset. Our results indicate ...