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Jiang, N. (author), Shang, R. (author), Heijman, S.G.J. (author), Rietveld, L.C. (author)
High-silica zeolites can be used for adsorption of organic compounds (OCs) from water. The adsorption efficacy could vary with the properties of OCs, as well as the porous and surface features of high-silica zeolites. In this study, the adsorption of triclosan, trichlorophenol (TCP) and phenol by ten high-silica zeolites were investigated. The...
journal article 2020
document
Wei, L. (author), Zietzschmann, F.E. (author), Rietveld, L.C. (author), van Halem, D. (author)
In this study, F<sup>−</sup> removal by Ca–Al–CO<sub>3</sub> layered double hydroxides (LDHs) was investigated at environmentally-relevant concentration ranges (2–12 mg/L) to below the WHO guideline, with an emphasis on the effect of LDHs’ modification, as well as the effects of initial F<sup>−</sup> concentration, adsorbent dose, pH,...
journal article 2020
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Ross, P.S. (author), Van Schagen, Kim (author), Rietveld, L.C. (author)
The primary goal of a drinking water company is to produce safe drinking water fulfilling the quality standards defined by national and international guidelines. To ensure the produced drinking water meets the quality standards, the sampling of the drinking water is carried out on a regular (almost daily) basis. It is a dilemma that the...
journal article 2020
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Kramer, F.C. (author), Shang, R. (author), Rietveld, L.C. (author), Heijman, S.G.J. (author)
Using ceramic nanofiltration membranes for treatment of municipal sewage is upcoming. However, the knowledge on fouling control methods for this application are very limited. The most commonly used fouling control method, chemical cleaning, has disadvantages. Chemical cleaning negatively impacts (i) the glass seal layer of tubular ceramic...
journal article 2020
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Rietveld, Jip (author), de Vries, Rolf (author), de Boer, Jaap (author), Hondelink, Dieuwer (author)
Amsterdam Airport Schiphol has 5 runways, each of which can be used for take-off or landing of aeroplanes. The weather heavily influences which runway configuration air traffic control might pick. Airport Forecasting Service (AFOS) predicts which configuration of runways works most efficiently given a set of expected weather conditions and the...
bachelor thesis 2019
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Cromjongh, Casper (author), Rietveld, Jasper (author)
This BSc Thesis is about the construction and control elements of the airplane group of the Solar Drone project. The project aims to improve the flight time of aerial vehicles, using solar energy. This document is delves into the possibility of applying solar cells to small model aircrafts. It outlines the challenges and solutions involved in...
bachelor thesis 2019
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Daniel, D. (author), Diener, Arnt (author), Pande, S. (author), Jansen, S.J.T. (author), Marks, Sara (author), Meierhofer, Regula (author), Bhatta, Madan (author), Rietveld, L.C. (author)
About 20 Million (73%) people in Nepal still do not have access to safely managed drinking water service and 22 million (79%)do not treat their drinking water before consumption. Few studies have addressed the combination of socio-economic characteristics and psychosocial factors that explain such behaviour in a probabilistic manner. In this...
journal article 2019
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Gonzalez Rodriquez, B. (author), Heijman, S.G.J. (author), Rietveld, L.C. (author), van Halem, D. (author)
This research evaluated the effect of different fluxes (16, 23 &amp; 30 L/m <sup>2</sup> h) and temperatures (31,35 &amp; 43 °C) on the rejection of As(V) during nanofiltration (NF) of natural geothermal influenced groundwater in Nicaragua. A NF pilot plant powered by solar panels was built and operated in rural community Telica, exposed to...
journal article 2019
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Adusei-Gyamfi, Junias (author), Ouddane, Baghdad (author), Rietveld, L.C. (author), Cornard, Jean Paul (author), Criquet, Justine (author)
The quality and quantity of natural organic matter (NOM) has been observed to evolve which poses challenges to water treatment facilities. Even though NOM may not be toxic itself, its presence in water has aesthetic effects, enhances biological growth in distribution networks, binds with pollutants and controls the bioavailability of trace...
review 2019
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Kramer, F. C. (author), Shang, R. (author), Rietveld, L.C. (author), Heijman, S.G.J. (author)
Ceramic nanofiltration is an emerging technology for the recovery of water and nutrients (including phosphate) from municipal sewage which becomes more imperative worldwide. In order to use ceramic nanofiltration for phosphate recovery from municipal sewage, more knowledge is needed. This is the first paper reporting the phosphate retention of...
journal article 2019
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Gonzalez Rodriquez, B. (author), Rietveld, L.C. (author), Longley, A. J. (author), van Halem, D. (author)
Several surveys have been conducted in Nicaragua between 1996 and 2015 confirming the presence of high levels of arsenic (&gt;10 μg/L). In this paper, these peer-reviewed (n = 2) and non-peer reviewed sources (n = 14) have been combined to provide an extensive overview of the arsenic contamination of drinking water sources in Nicaragua. So...
review 2019
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Gulamussen, N.J. (author), Marques Arsenio, A. (author), Pedro Matsinhe, Nelson (author), Rietveld, L.C. (author)
The increasing world population and growth of industrial development lead to growing water scarcity that, combined with deficient sanitation services, represents serious challenges, particularly in regions like sub-Saharan Africa. Water reclamation is a promising approach to reduce water scarcity, serving as a driving force for better...
journal article 2019
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Rietveld, M.W.J. (author), Clemens, F.H.L.R. (author), Langeveld, J.G. (author)
Sewer and urban drainage systems deal with the runoff of areas that lack infiltration capacity. During wet weather, solids that are present on the street are (re)mobilised and transported to the drainage system by the runoff. These solids and their associated pollutants can have detrimental effects on receiving water quality. This paper presents...
conference paper 2019
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Mubarak, F.A. (author), Romano, R. (author), Galatro, L. (author), Mascolo, V. (author), Rietveld, Gert (author), Spirito, M. (author)
This paper analyzes and accurately models the complex noise behavior of vector network analyzers (VNAs) when measuring large-mismatch devices and subsequently shows how the VNA measurement noise performance is enhanced through implementation of a high-speed, broadband, active RF interferometer module. The presented VNA noise model provides a...
journal article 2019
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Gonzalez Rodriquez, B. (author), Heijman, S.G.J. (author), Rietveld, L.C. (author), van Halem, D. (author)
In Nicaragua, a Central American country, geothermally influenced waters are frequently found to be contaminated with arsenic (as As(V)). This study investigated the effect of high-temperatures (25–50 °C), as found in geothermally influenced source waters, on the rejection of monovalent H2AsO4 - and divalent HAsO4 2- species (at pH 6,7 and 8)...
journal article 2019
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Kramer, F.C. (author), Shang, R. (author), Scherrenberg, S. M. (author), Rietveld, L.C. (author), Heijman, S.G.J. (author)
One of the perceived benefits of ceramic membranes is their robustness, which makes them suitable for treating high organic load waste streams. In particular, ceramic tight ultrafiltration (tUF) and nanofiltration (NF) form an important barrier against small colloids and organic molecules. In order to achieve this barrier, the quality of the...
journal article 2019
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Elkalliny, A.S.M. (author), Rivandi, Alireza H. (author), Uzun, S. (author), van Ommen, J.R. (author), Nugteren, H.W. (author), Rietveld, L.C. (author), Appel, P.W. (author)
The rate of photocatalytic oxidation of contaminants in drinking water using an immobilized catalyst can be increased by properly designing the catalyst structure. By creating a solar reactor in which meshes coated with TiO<sub>2</sub> were stacked, we demonstrated that degradation of humic acids with four superimposed stainless steel meshes...
journal article 2019
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Daniel, D. (author), Pande, S. (author), Rietveld, L.C. (author)
Household water treatment (HWT) is a simple technology to tackle this issue of non-potable drinking water at household level. Unfortunately, studies have showed that people do not use it regularly which diminishes the impact of HWT on health.
poster 2019
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Ross, P.S. (author), van der Aa, L.T.J. (author), van Dijk, T. (author), Rietveld, L.C. (author)
Biological activated carbon (BAC) filtration is an important treatment step in the production of drinking water especially if drinking water is produced from surface water. The performance and processes within a BAC filter have been of interest for researchers since the 1980's, mainly because of its ability to remove natural organic matter...
journal article 2019
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Gude, J.C.J. (author), Rietveld, L.C. (author), van Halem, D. (author)
In the top layer of aerated rapid sand filtration systems, uncharged As(III) is biologically converted to charged As(V). Subsequently, the main removal mechanism for As(V) is adsorption onto oxidised, flocculated Fe(III) (hydrous ferric hydroxides; HFO). The aim of this research was to understand the interactions between As and Fe in...
journal article 2018
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