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Chen, L.M. (author), de Bruin, S. (author), Pronk, M. (author), Sousa, Diana Z. (author), van Loosdrecht, Mark C.M. (author), Lin, Y. (author)Anaerobic and aerobic granular sludge processes are widely applied in wastewater treatment. In these systems, microorganisms grow in dense aggregates due to the production of extracellular polymeric substances (EPS). This study investigates the sialylation and sulfation of anionic glyconconjugates in anaerobic and aerobic granular sludges...journal article 2023
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Bahgat, T.M.S.M. (author), Wilfert, P.K. (author), Korving, Leon (author), van Loosdrecht, Mark C.M. (author)The study evaluated the combined phosphorus, nitrogen, methane, and extracellular polymeric substances (EPS) recovery from aerobic granular sludge (AGS) wastewater treatment plants. About 30% of sludge organics are recovered as EPS and 25–30% as methane (≈260 ml methane/g VS) by integrating alkaline anaerobic digestion (AD). It was shown that...journal article 2023
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Deng, Z. (author), He, Qing (author), Manning, Andrew J. (author), Chassagne, C. (author)The interactions between organic and inorganic particles in the context of flocculation is an on-going topic of research. Most current researches do not distinguish between the effects of EPS (produced by microorganisms) and living microorganisms (like algae). In this study, the effect of salinity, EPS and living algae on sediment...journal article 2023
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Safar, Z. (author), Deng, Zhirui (author), Chassagne, C. (author)In the present study, we aim to parameterize a flocculation model, based on a logistic growth equation, by conducting laboratory experiments. The flocculation experiments are performed using two types of natural sediments and different flocculating agents: salt (monovalent and divalent), extracellular polymeric substances, and living and dead...journal article 2023
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van Hooff, Sam (author)The growing number of software vulnerabilities being disclosed is posing a challenge to many organisations. With limited patching resources and only a fraction of the vulnerabilities posing a real threat, prioritization is key. Current prioritization methods, such as CVSS, are failing and are sometimes no better than random guessing. Exploit...master thesis 2022
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Martelli, Davide (author)Cost and lifetime requirements are two of the key drivers for the development of complex systems for modern space missions. As a consequence, system reliability is a factor of primary concern, requiring appropriate analyses. A closely related topic is the study of the effects induced by failures to which the system may be subjected, necessary to...master thesis 2022
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Deng, Zhirui (author), Huang, Dong (author), He, Qing (author), Chassagne, C. (author)Sediment is found throughout the world’s alluvial plain rivers, estuarine coasts and adjacent seas and is thereby a key factor in major ecosystems. Suspended mineral sediment can affect the biological activity of microorganisms and plants, by reducing light penetration in the water column or by binding to organic matter. Biological processes...review 2022
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de Bruin, S. (author), Vasquez Cardenas, D. (author), Sarbu, S. M. (author), Meysman, F.J.R. (author), Sousa, D. Z. (author), van Loosdrecht, Mark C.M. (author), Lin, Y. (author)Sulfated glycosaminoglycans (sGAG) are negatively charged extracellular polymeric substances that occur in biofilms from various environments. Yet, it remains unclear whether these polymers are acquired from the external environment or produced by microbes in the biofilm. To resolve this, we analyzed the presence of sGAGs in samples of an...journal article 2022
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Keim, Josephine (author)Interest rate products form a large segment of over-the-counter derivatives. When the interest rate became negative, for the first time, in July 2009, interest rate models needed to adjust. Where first a log-normal model, as the Brace Gatarek Musiela (BGM) model, might have seemed logical for interest-rate products, as they were<br/>bounded by...master thesis 2021
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Gardella, Giorgio (author)Dissolved air flotation (DAF) is a water treatment technology meant for the separation of suspended particles from the water. Since the fifties of the XIX century, it has gained an important role in many sectors of water treatment applications. In general, the flux variability, the small space requirement, and the limited energy consumption...student report 2020
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Methorst, Ard-Jan (author)In the Netherlands dikes are assessed on piping using the model developed by Sellmeijer. This model is calibrated on experiments with permeable, homogeneous, fluvial sand with no fines and covered by an impermeable cohesive layer. In tidal areas, however, the sand deposits are strongly heterogenous, contain fines and are influenced by...master thesis 2020
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Felz, S. (author), Kleikamp, H.B.C. (author), Zlopasa, J. (author), van Loosdrecht, Mark C.M. (author), Lin, Y. (author)Structural extracellular polymeric substances (structural EPS) can form stable hydrogels and are considered to be responsible for the stability of biofilms and aerobic granular sludge. Structural EPS were extracted from aerobic granular sludge and characterized for their gel-forming capacity with different alkaline earth and transition metal...journal article 2020
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Kirkland, Catherine M. (author), Seymour, Joseph D. (author), Krug, Julia R. (author), Velders, Aldrik H. (author), Vergeldt, Frank J. (author), Van As, Henk (author), van den Berg, L. (author), de Kreuk, M.K. (author), Codd, Sarah L. (author)Despite aerobic granular sludge wastewater treatment plants operating around the world, our understanding of internal granule structure and its relation to treatment efficiency remains limited. This can be attributed in part to the drawbacks of time-consuming, labor-intensive, and invasive microscopy protocols which effectively restrict...journal article 2020
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Pinel, I.S.M. (author), Kleikamp, H.B.C. (author), Pabst, Martin (author), Vrouwenvelder, J.S. (author), van Loosdrecht, Mark C.M. (author), Lin, Y. (author)Sialic acids in the structural matrix of biofilms developing in engineered water systems constitute a potential target in the battle against biofouling. This report focuses specifically on the presence of sialic acids as part of the extracellular polymeric substances (EPS) of biofilms forming in cooling towers and the potential effect of...journal article 2020
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Jafari Eshlaghi, M. (author), D'haese, A. (author), Zlopasa, J. (author), Cornelissen, E. R. (author), Vrouwenvelder, J.S. (author), Verbeken, K. (author), Verliefde, A. (author), van Loosdrecht, Mark C.M. (author), Picioreanu, C. (author)Chemical cleaning is vital for the optimal operation of membrane systems. Membrane chemical cleaning protocols are often developed in the laboratory flow cells (e.g., Membrane Fouling Simulator (MFS)) using synthetic feed water (nutrient excess) and short experimental time of typically days. However, full-scale Reverse Osmosis (RO) membranes...journal article 2020
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Damian, Mircea (author)Over the past decades, the technological improvements in computing power, software and projection systems enabled driving simulators to become a cost-effective tool to perform research activities and train novel drivers. Today, driving simulators are widely used for studying the interaction of driver and vehicle system, developing new vehicles...master thesis 2019
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de Boer, Ruben (author)In times when there is more and more focus on environmental impact, all aspects must be taken into account. Expanded polystyrene (EPS) is easy and cheap to produce and has lots of applications because of its properties. These properties however, also make it a hard material to recycle. This paper focuses on a rich mathematical model for the...master thesis 2019
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Felz, S. (author), Vermeulen, Pascalle (author), van Loosdrecht, Mark C.M. (author), Lin, Yue Mei (author)Biofilm structure and functionality depend on extracellular polymeric substances (EPS), but analytical methods for EPS often lack specificity which limits progress of biofilm research. EPS were extracted from aerobic granular sludge and analyzed with frequently applied colorimetric methods. The colorimetric methods were evaluated based on...journal article 2019
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de Graaff, D.R. (author), Felz, S. (author), Neu, Thomas R. (author), Pronk, M. (author), van Loosdrecht, Mark C.M. (author), Lin, Y. (author)Sialic acids have been discovered in the extracellular polymeric substances (EPS) of seawater-adapted aerobic granular sludge (AGS). Sialic acids are a group of monosaccharides with a nine-carbon backbone, commonly found in mammalian cells and pathogenic bacteria, and frequently described to protect EPS molecules and cells from attack by...journal article 2019
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Boleij, M. (author), Seviour, Thomas (author), Wong, L.L.M. (author), van Loosdrecht, Mark C.M. (author), Lin, Y. (author)Elucidating the extracellular polymeric substances (EPS) of anammox granular sludge is important for stable nitrogen removal processes in wastewater treatment. However, due to a lack of standardized methods for extraction and characterization, the composition of anammox granule EPS remains mostly unknown. In this study, alkaline (NaOH) and...journal article 2019
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