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Ali Mubarak, Faisal (author), Mascolo, V. (author), Hussain, Faizan (author), Rietveld, Gert (author)Closed-form solutions are presented for calculating the reflection coefficient with corresponding uncertainty of metrology-grade 3.5 mm air-dielectric coaxial transmission lines for use as reference standards in S-parameter measurements up to 33 GHz. The closed-form solutions allow the calculation of the sensitivity coefficients required for...journal article 2024
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Jan, A. (author), Chen, M. (author), Nijboer, Michiel (author), Luiten-Olieman, Mieke W.J. (author), Rietveld, L.C. (author), Heijman, Sebastiaan (author)Sodium hypochlorite (NaClO) is widely used for the chemical cleaning of fouled ultrafiltration (UF) membranes. Various studies performed on polymeric membranes demonstrate that long-term (>100 h) exposure to NaClO deteriorates the physicochemical properties of the membranes, leading to reduced performance and service life. However, the effect...journal article 2024
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Wang, Q. (author), Lechtenfeld, Oliver J. (author), Rietveld, L.C. (author), Schuster, Jonas (author), Ernst, Mathias (author), Hofman-Caris, Roberta (author), Kaesler, Jan (author), Wang, Chunmiao (author), Yang, Min (author), Yu, Jianwei (author), Zietzschmann, F.E. (author)Activated carbon is employed for the adsorption of organic micropollutants (OMPs) from water, typically present in concentrations ranging from ng L<sup>−1</sup> to μg L<sup>−1</sup>. However, the efficacy of OMP removal is considerably deteriorated due to competitive adsorption from background dissolved organic matter (DOM), present at...journal article 2024
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Lin, B. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)Ceramic nanofiltration (NF) is a promising alternative for direct surface water treatment, but is hampered for full-scale applications by fouling and a lack of eco-friendly cleaning regimes. In this work, an innovative reactive pre-coat layer, consisting of an iron oxychloride catalyst, was constructed on top of commercial ceramic NF...journal article 2024
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Roy, M. (author), Kraaijeveld, E. (author), Gude, J.C.J. (author), van Genuchten, Case M. (author), Rietveld, L.C. (author), van Halem, D. (author)Long-term consumption of groundwater containing elevated levels of arsenic (As) can have severe health consequences, including cancer. To effectively remove As, conventional treatment technologies require expensive chemical oxidants to oxidise neutral arsenite (As(III)) in groundwater to negatively charged arsenate (As(V)), which is more...journal article 2024
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Zhao, W. (author), Ghafoor, S. (author), Lagerweij, Gijs Willem (author), Rietveld, Gert (author), Vaessen, P.T.M. (author), Ghaffarian Niasar, M. (author)This paper comprehensively reviews several techniques that address the static and dynamic voltage balancing of series-connected MOSFETs. The effectiveness of these techniques was validated through simulations and experiments. Dynamic voltage-balancing techniques include gate signal delay adjustment methods, passive snubbers, passive clamping...journal article 2024
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Hofman, Wout (author), Rukanova, B.D. (author), Tan, Y. (author), Bharosa, Nitesh (author), Ubacht, J. (author), Rietveld, Elmer (author)The transition towards a circular economy (CE) will require data sharing across different platforms and data spaces of parties operating in a variety of supply chains. From a circular economy compliance monitoring perspective, beyond the access to mandatory data that governments will receive, authorities may benefit from accessing additional...conference paper 2024
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van der Hoek, J.P. (author), Fausta, N. (author), Fu, Mingyan (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)Verwijdering van organische microverontreinigingen uit huishoudelijk afvalwater, waaronder medicijnresten, staat sterk in de belangstelling om de oppervlaktewater kwaliteit te verbeteren, de drinkwaterbronnen te beschermen en te voldoen aan toekomstige EU richtlijnen. In minder dan vijf jaar is AdOx, een technologie waarin adsorptie en oxidatie...journal article 2023
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The Anatomy of Circular Economy Monitoring through the Lens of Border Crossing and Levels of ControlRukanova, B.D. (author), Ubacht, J. (author), Tan, Y. (author), Agahari, W. (author), Rietveld, Elmer (author), Lennartz, Jelmer (author)In this paper, we propose a framework for circular economy monitoring by looking at the issue of border crossing and levels of control.conference paper 2023
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Ubacht, J. (author), Schmid, Jonathan (author), Rietveld, Elmer (author), Lennartz, Jelmer (author), Rukanova, B.D. (author), Tan, Y. (author)The European Commission initiated a series of Directives and Regulations that aim to turn the linear economy into a climate-neutral and circular economy. Business-to-government information- sharing arrangements play an essential role in monitoring compliance with these regulatory measures. To this end data from the supply chain of products needs...conference paper 2023
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Prest, Emmanuelle I. (author), Martijn, Bram J. (author), Rietveld, Matthijs (author), Lin, Y. (author), Schaap, Peter G. (author)Sediment formation in drinking water distribution systems can lead to brown water at customer taps. Previous studies have shown that sediment formation is closely linked with (micro)biological processes in the distribution system, however the mechanism is not fully understood. Most available studies on discoloration or sediment formation...journal article 2023
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Rietveld, Mike (author), van Dijk, Jolijn (author), Gülüm Taş, P. (author)Strategic investments are crucial for software companies as they determine the direction and growth of the businesses. Parallel to continuous improvements in information technologies, increased customer expectations, and competitive environments, deciding between new investment strategies has become even more important. Despite their prevalence,...journal article 2023
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Fitriani, Nurina (author), Theresia, Ledy (author), O'Marga, Timothy Tjahja Nugraha (author), Kurniawan, Setyo Budi (author), Supriyanto, Agus (author), Abdullah, Siti Rozaimah Sheikh (author), Rietveld, L.C. (author)The present study investigated the utilization of blood clam shells as a potential substitute for conventional media, as well as the influence of the acclimation time on the efficacy of an intermittent slow sand filter (ISSF) in the treatment of real domestic wastewater. ISSF was operated with 16 h on and 8 h off, focusing on the parameters...journal article 2023
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Araya-Obando, José Andrés (author), Rietveld, L.C. (author), Kelly-Coto, Daniel E. (author), Quesada-González, Andrea (author), Caballero-Chavarría, Andrey (author), Romero-Esquivel, Luis G. (author)Biofilters are effectively used for drinking water treatment. However, the long ripening time of virgin media for manganese (Mn) removal is a major concern. In this study, the influence of the flow regime on the ripening time of virgin pumice medium was investigated. For this purpose, pilot-scale experiments were performed to compare the...journal article 2023
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Rukanova, B.D. (author), Ubacht, J. (author), Turner, B. (author), Tan, Y. (author), Schmid, J. (author), Rietveld, E (author)The United Nations’ Sustainable Development Goals (SDGs) have paved the way toward a more sustainable future. The 2019 EU Green Deal and the 2020 EU Circular Economy Action Plan [1] introduce laws and regulations to facilitate and encourage the transition towards sustainability and a circular economy (CE). For the implementation of these...conference paper 2023
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Adsorption and cake layer fouling in relation to Fenton cleaning of ceramic nanofiltration membranesLin, B. (author), Rietveld, L.C. (author), Yao, Lu (author), Heijman, Sebastiaan (author)Catalytic ceramic nanofiltration (NF) is a promising technology for direct wastewater reclamation, given its high separation selectivity and reactive surfaces for oxidative removal of fouling. A better understanding of the relation between fouling types and oxidative cleaning efficacy under high organic loading conditions is of practical...journal article 2023
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Gulamussen, N.J. (author), Donse, D. (author), Marques Arsenio, A. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)There is a global need for optimizing the use of water that has resulted from increased demand due to industrial development, population growth, climate change and the pollution of natural water resources. One of the solutions is to use reclaimed water in industrial applications that do not require water of potable quality, such as cooling water...journal article 2022
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Rietveld, M.W.J. (author), Clemens, F.H.L.R. (author), Langeveld, J.G. (author)Urban runoff remobilises solids and their associated pollutants from urban-built environments and transports them to drainage systems via gully pots. This study presents an extensive monitoring campaign on the solids loading to drainage systems, including 104 gully pots as sampling locations and lasting 2 years. The solids loading is modelled...journal article 2022
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Daniel, D. (author), Pande, S. (author), Rietveld, L.C. (author)Endogeneity or reverse causality in regression analysis results in biased estimation of the effects of independent variables on the dependent variable and leads to inaccurate interpretations. However, the biased estimation of the effects of psychological factors on water–related behaviours are rarely discussed. This study investigated the...journal article 2022
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Chen, M. (author), Heijman, Sebastiaan (author), Luiten-Olieman, Mieke W.J. (author), Rietveld, L.C. (author)Ceramic membranes have drawn increasing attention in oily wastewater treatment as an alternative to their traditional polymeric counterparts, yet persistent membrane fouling is still one of the largest challenges. Particularly, little is known about ceramic membrane fouling by oil-in-water (O/W) emulsions in constant flux filtration modes. In...journal article 2022