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van der Hoek, J.P. (author), Deng, Tianyi (author), Spit, Tiza (author), Luimstra, Veerle (author), de Kreuk, M.K. (author), van Halem, D. (author)Organic micropollutants (OMPs) enter the aquatic environment via municipal wastewater treatment plants (WWTPs). As conventional WWTPs have limited capacity for the removal of OMPs, additional processes are required, like ozone - granular activated carbon (GAC) filtration. A specific lay-out of this process is the O3-STEP® process, in which the...journal article 2024
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Corbera Rubio, F. (author), Stouten, G.R. (author), Bruins, Jantinus (author), Dost, Simon F. (author), Merkel, Alexander Y. (author), Müller, S. (author), van Loosdrecht, Mark C.M. (author), van Halem, D. (author), Laureni, M. (author)Nitrate leaching from agricultural soils is increasingly found in groundwater, a primary source of drinking water worldwide. This nitrate influx can potentially stimulate the biological oxidation of iron in anoxic groundwater reservoirs. Nitrate-dependent iron-oxidizing (NDFO) bacteria have been extensively studied in laboratory settings, yet...journal article 2024
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Rahmani, Hossein (author)The economic and environmental advantages of extrusion-based 3D concrete printing have made it a frontrunner in large-scale buildings. Nonetheless, this approach suffers from a contradictory rheological requirement and a high percentage of Portland cement (PC) in its mixture, which challenges its sustainability. It is claimed that the addition...master thesis 2023
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Bravenboer, Bart (author), Bulte, Sergio (author), Helmich, Max (author), Knoop, Job (author), Neijenhuis, Ole (author), Wolf, Marijn (author)Growing concerns about elevated nitrate levels in natural springs on the southern slope of the Irazu Volcano, Cartago province in Costa Rica, were the driving force for a multi-disciplinary study on the problem. The region is characterized by its high agricultural output and steep slopes. More than sixty springs located in the area are managed...student report 2023
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Chen, Y. (author), Rahmani, Hossein (author), Schlangen, E. (author), Copuroglu, Oguzhan (author)The implementation of extrusion-based 3D concrete printing (3DCP) in large-scale constructions is currently limited by concerns regarding rheology control and the sustainability of this process. To address these issues, this study presents an approach to develop limestone-calcined clay-based cementitious (LC3) materials accelerated by Ca(NO...journal article 2023
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Trapp, S. (author), Lammers, Tom (author), Engudar, Gokce (author), Hoehr, Cornelia (author), Denkova, A.G. (author), Paulssen, E. (author), de Kruijff, R.M. (author)Background: The radionuclide Ga-68 is commonly used in nuclear medicine, specifically in positron emission tomography (PET). Recently, the interest in producing Ga-68 by cyclotron irradiation of [<sup>68</sup>Zn]Zn nitrate liquid targets is increasing. However, current purification methods of Ga-68 from the target solution consist of multi...journal article 2023
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Kim, J. (author), Jonoski, Andreja (author), Solomatine, D.P. (author), Goethals, Peter L. M. (author)The World Health Organization (WHO) and the U.S. Environmental Protection Agency (EPA) provide guidelines on the maximum levels of nitrate nitrogen (NO3-N) contained in drinking water since excess nitrate ingestion may harm human health. Thus, monitoring and controlling the NO3-N concentration is of paramount importance, especially in sources of...journal article 2023
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Bunea, S. (author)Polymer electrolyte membrane (PEM) water electrolysis represents a promising technology for the sustainable, emission-free hydrogen production from renewable energy, as it is able to quickly respond to fluctuations in the renewable energy supply. Nevertheless, natural scarcity of iridium, which is used as catalyst for the anodic water oxidation...doctoral thesis 2022
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Perli, T. (author), Borodina, Irina (author), Daran, J.G. (author)Engineering a new metabolic function in a microbial host can be limited by the availability of the relevant cofactor. For instance, in Yarrowia lipolytica, the expression of a functional nitrate reductase is precluded by the absence of molybdenum cofactor (Moco) biosynthesis. In this study, we demonstrated that the Ogataea parapolymorpha Moco...journal article 2021
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Bunea, S. (author), Clemens, Kevin (author), Urakawa, A. (author)The application of a polymer electrolyte membrane (PEM) electrolytic cell for continuous conversion of nitrate, one of the contaminants in water, to ammonia at the cathode was explored in the present work. Among carbon-supported metal (Cu, Ru, Rh and Pd) electrocatalysts, the Ru-based catalyst showed the best performance. By suppressing the...journal article 2021
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Perli, T. (author), van der Vorm, Daan N.A. (author), Wassink, Mats (author), van den Broek, M.A. (author), Pronk, J.T. (author), Daran, J.G. (author)Metabolic capabilities of cells are not only defined by their repertoire of enzymes and metabolites, but also by availability of enzyme cofactors. The molybdenum cofactor (Moco) is widespread among eukaryotes but absent from the industrial yeast Saccharomyces cerevisiae. No less than 50 Moco-dependent enzymes covering over 30 catalytic...journal article 2021
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CHU, Lok Yan (author)The project is situated in Parkstad, South Limburg, an administrative region consisting of 7 municipalities, formerly known as the East Mining Region. Deindustrialisation completely transformed the region, making it the first shrinking area of the Netherlands. Shrinkage commonly refers to a shrinking economy, shrinking population and increased...master thesis 2020
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Soler Jofra, A. (author), Laureni, M. (author), Warmerdam, Marieke (author), Pérez, Julio (author), van Loosdrecht, Mark C.M. (author)Hydroxylamine is a key intermediate in several biological reactions of the global nitrogen cycle. However, the role of hydroxylamine in anammox is still not fully understood. In this work, the impact of hydroxylamine (also in combination with other substrates) on the metabolism of a planktonic enrichment culture of the anammox species Ca....journal article 2020
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Lutz, Stefanie R. (author), Trauth, Nico (author), Musolff, Andreas (author), van Breukelen, B.M. (author), Knöller, Kay (author), Fleckenstein, Jan H. (author)Riparian zones are important buffer zones for streams as they are hotspots of nitrate transformation and removal in agricultural catchments. However, mixing of water from different sources and various transformation processes can complicate the quantification of nitrate turnover in riparian zones. In this study, we analyzed nitrate...journal article 2020
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Ampurdanés, Jordi (author), Bunea, S. (author), Urakawa, A. (author)Electrolysis-assisted nitrate (NO<sub>3</sub><sup>−</sup>) reduction is a promising approach for its conversion to harmless N<sub>2</sub> from waste, ground, and drinking water due to the possible process simplicity by in-situ generation of H<sub>2</sub>/H/H<sup>+</sup> by water electrolysis and to the flexibility given by tunable redox...journal article 2020
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Soler Jofra, A. (author), Wang, R. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author), Pérez, Julio (author)A lab-scale partial nitritation granular sludge air-lift reactor was operated in continuous mode treating low strength synthetic medium (influent ca. 50 mg-N-NH<sub>4</sub> <sup>+</sup>/L). Granules were initially stratified with AOB in the external shell and NOB in the inner core at 20 °C. Once temperature was decreased progressively from 20...journal article 2019
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Wang, M. (author), He, Lijuan (author), Infante Ferreira, C.A. (author)Unfavorable transport properties have always been pointed out as the key factors that hinder the application of ammonia/ionic liquids (NH <sub>3</sub> /ILs) in absorption cycles, while heat and mass transfer of these new fluids in components have been rarely reported. In this study, a corrugated plate heat exchanger is selected as the...journal article 2019
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Ilgrande, Chiara (author), Mastroleo, Felice (author), Christiaens, Marlies E.R. (author), Lindeboom, R.E.F. (author), Prat, Delphine (author), Van Hoey, Olivier (author), Ambrozova, Iva (author), Coninx, Ilse (author), Heylen, Wietse (author)To sustain human deep space exploration or extra-terrestrial settlements where no resupply from the Earth or other planets is possible, technologies for in situ food production, water, air, and waste recovery need to be developed. The Micro-Ecological Life Support System Alternative (MELiSSA) is such a Regenerative Life Support System (RLSS)...journal article 2019
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Keuten, M.G.A. (author)As swimmers enter a swimming pool, they release micro-organisms, particles and soluble substances. While chlorine is often used to inactivate micro-organisms, a side-effect of chlorination is the formation of unwanted disinfection by-products. In order to reduce these by-products, more knowledge is needed on the release of pollutants by bathers...doctoral thesis 2018
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Wang, F. (author), Salgado Ismodes, V.A. (author), van der Hoek, J.P. (author), van Halem, D. (author)The removal of bromate (BrO<sub>3</sub> <sup>-</sup>) as a byproduct of ozonation in subsequent managed aquifer recharge (MAR) systems has so far gained little attention. This preliminary study with anoxic batch experiments was executed to explore the feasibility of chemical BrO<sub>3</sub> <sup>-</sup> reduction in Fe-reducing zones of MAR...journal article 2018
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