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Mithaiwala, Hiteshree (author)In developing countries with increased industrialization, much research is carried out in order to recover the maximum ammonium from the environment. One of the methods to recover ammonium is Bipolar Membrane Electrodialysis (BPMED), a chemical-free technology that enables recovery and purification of the corresponding acid and base by the...master thesis 2024
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Trikannad, S.A. (author), Attiani, Valentina (author), van der Wielen, Paul W.J.J. (author), Smidt, Hauke (author), van der Hoek, J.P. (author), van Halem, D. (author)Slow sand filters (SSFs) are widely used in drinking water production to improve microbial safety and biological stability of water. Full-scale SSFs are maintained by scraping the biomass-rich top layers of sand. The period of downtime required for filter recovery after scraping is a major challenge due to limited knowledge of the re...journal article 2024
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Mohapatra, Sanjeeb (author), Li Xian, Jovina Lew (author), Gálvez-Rodríguez, Andy (author), Ekande, Onkar Sudhir (author), Drewes, Jörg E. (author), Gin, Karina Yew-Hoong (author)Quaternary ammonium compounds (QACs) are commonly used in many products, such as disinfectants, detergents and personal care products. However, their widespread use has led to their ubiquitous presence in the environment, posing a potential risk to human and environmental health. Several methods, including direct and indirect photodegradation,...review 2024
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Policastro, G. (author), Ebrahimi, S. (author), Weissbrodt, D.G. (author), Fabbricino, Massimiliano (author), van Loosdrecht, Mark C.M. (author)A dual-growth-limited continuous operated bioreactor (chemostat) was used to enhance lipid accumulation in an enrichment culture of microalgae. The light intensity and nitrogen concentration where both limiting factors resulting in high lipid accumulation in the mixed culture. Both conditions of light and nitrogen excess and deficiency were...journal article 2024
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Pavez Jara, J.A. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Full-scale thermal hydrolysis processes (THP) showed an increase in nutrients release and formation of melanoidins, which are considered to negatively impact methanogenesis during mesophilic anaerobic digestion (AD). In this research, fractionation of THP-sludge was performed to elucidate the distribution of nutrients and the formed...journal article 2023
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Corbera Rubio, F. (author), Laureni, M. (author), Koudijs, N. (author), Müller, S. (author), van Alen, Theo (author), Schoonenberg, Frank (author), Lücker, Sebastian (author), Pabst, Martin (author), van Loosdrecht, Mark C.M. (author), van Halem, D. (author)Rapid sand filters (RSF) are an established and widely applied technology for groundwater treatment. Yet, the underlying interwoven biological and physical-chemical reactions controlling the sequential removal of iron, ammonia and manganese remain poorly understood. To resolve the contribution and interactions between the individual reactions...journal article 2023
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Han, Fei (author), Zhang, Mengru (author), Li, Zhe (author), Liu, Zhe (author), Han, Yufei (author), Li, L. (author), Zhou, Weizhi (author)Marine microorganisms have an inherent advantage in the treatment of saline wastewater due to their halophilic properties. Ammonium assimilation is the most important and common nitrogen conversion pathway in the ocean, which means that it may be a suitable nitrogen removal strategy under high salinity conditions. However, the targeted...journal article 2023
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Pavez Jara, J.A. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Thermal hydrolysis process (THP) is a well-established anaerobic digestion (AD) pre-treatment technology. Despite the THP benefits the pre-treatment increases the concentrations of nutrients and melanoidins in the digestate reject water after dewatering. The increased concentrations of nutrients and melanoidins formed during THP-AD can impact...journal article 2023
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Başli, Elif (author)Excess nitrogen disposal into the environment increased with the discovery of an artificial way of nitrogen gas conversion to ammonia, and its implementation to industrial scale. The excess wasted fixed nitrogen ended up in rivers, lakes, oceans which resulted in degrading air, water and soil due to exceedance of the amount of nitrogen that can...master thesis 2022
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Nagulagama, Rathish (author)The nitrogen crisis is one of the biggest problems in society. Therefore, a tremendous amount of research is going on to solve this problem. This thesis focuses on solving the problem of nitrogenous emissions by capturing ammonium emissions from agricultural farms. Biochars have been gaining much attention due to their desirable properties, such...master thesis 2022
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Coupling ORCHESTRA to Python: A modelling framework for simulating waste degradation in a bioreactorde Zeeuw, Guido (author)Over the years, modelling frameworks have been proposed to describe and predict the degradation of municipal solid waste in landfills. These frameworks, however, fail to couple the kinetic solutions to the real-time equilibrium state of the system. Because of this, fundamental processes such as pH changes, NH4+ adsorption to the waste surface...master thesis 2022
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Soler Jofra, A. (author), Schmidtchen, Lisbeth (author), Olmo, Lluc (author), van Loosdrecht, Mark C.M. (author), Pérez, Julio (author)Hydroxylamine is a nitrogen intermediate of ammonium oxidizing bacteria (AOB) that can transiently accumulate during nitrification. The impact of hydroxylamine on aerobic ammonium oxidations is still obscure. In the present study the short and long term impact of hydroxylamine on partial nitritation granular sludge was investigated. Dissolved...journal article 2022
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Panasiuk, Oleksandr (author), Hedström, Annelie (author), Langeveld, J.G. (author), Viklander, Maria (author)Infiltration and inflow (I/I) into sanitary sewers causes numerous negative effects on the whole wastewater management system and ultimately, on the receiving waters. Consequently, a number of methods have been developed to analyse the performance of sewer systems with respect to I/I, including: distributed temperature sensing (DTS), closed...journal article 2022
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Kouba, Vojtěch (author), Hůrková, Kamila (author), Navrátilová, Klára (author), Kok, Dana (author), Benáková, Andrea (author), Laureni, M. (author), Vodičková, Patricie (author), van Loosdrecht, Mark C.M. (author), Weissbrodt, D.G. (author)The application of partial nitritation-anammox (PN/A) under mainstream conditions can enable substantial cost savings at wastewater treatment plants (WWTPs), but how process conditions and cell physiology affect anammox performance at psychrophilic temperatures below 15 °C remains poorly understood. We tested 14 anammox communities, including...journal article 2022
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Zhang, Mengru (author), Han, Fei (author), Liu, Zhe (author), Han, Yufei (author), Li, L. (author), Zhou, Weizhi (author)The contradiction between theoretical metabolism of ammonium assimilation and experiential understanding of conventional biosystems makes the rational optimization of the ammonium-assimilating microbiome through carbon to nitrogen (C/N) ratios perplexing. The effect of different C/N ratios on ammonium-assimilating biosystems was investigated...journal article 2022
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Kouba, V. (author), Bachmannová, Ch (author), Podzimek, T. (author), Lipovová, P. (author), van Loosdrecht, Mark C.M. (author)The adaptation of bacteria involved in the anaerobic ammonium oxidation (anammox) to low temperatures in the mainstream of WWTP will unlock substantial treatment savings. However, their adaptation mechanisms have begun to be revealed only very recently. This study reviewed the state-of-the-art knowledge on these mechanisms from -omics studies...review 2022
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Kouba, Vojtěch (author), Hůrková, Kamila (author), Navrátilová, Klára (author), Kok, Dana (author), Benáková, Andrea (author), Laureni, M. (author), van Niftrik, Laura (author), van Loosdrecht, Mark C.M. (author), Weissbrodt, D.G. (author)The adaptation of bacteria involved in anaerobic ammonium oxidation (anammox) to low temperatures will enable more efficient removal of nitrogen from sewage across seasons. At lower temperatures, bacteria typically tune the synthesis of their membrane lipids to promote membrane fluidity. However, such adaptation of anammox bacteria lipids,...journal article 2022
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Soler Jofra, A. (author)One of the least studied nitrogen compounds is hydroxylamine. Hydroxylamine<br/>is a highly reactive and toxic inorganic compound that some microorganisms use<br/>as intermediate during nitrogen conversions. The aim of this thesis was to further<br/>understand the role of hydroxylamine in the nitrogen cycle.doctoral thesis 2021
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Soler Jofra, A. (author), Pérez, Julio (author), van Loosdrecht, Mark C.M. (author)Aerobic ammonium oxidizing bacteria were first isolated more than 100 years ago and hydroxylamine is known to be an intermediate. The enzymatic steps involving hydroxylamine conversion to nitrite are still under discussion. For a long time it was assumed that hydroxylamine was directly converted to nitrite by a hydroxylamine oxidoreductase....review 2021
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Simultaneous removal of ammonium ions and sulfamethoxazole by ozone regenerated high silica zeolitesDoekhi-Bennani, Y. (author), Mir Leilabady, N. (author), Fu, Mingyan (author), Rietveld, L.C. (author), van der Hoek, J.P. (author), Heijman, Sebastiaan (author)Continuous development of industry and civilization has led to changes in composition, texture and toxicity of waste water due to the wide range of pollutants being present. Considering that the conventional wastewater treatment methods are insufficient for removing micropollutants and nutrients to a high level, other, alternative, treatment...journal article 2021