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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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Kehrein, P.A. (author), Jafari Eshlaghi, M. (author), Slagt, Marc (author), Cornelissen, Emile (author), Osseweijer, P. (author), Posada Duque, J.A. (author), van Loosdrecht, Mark C.M. (author)The objective of this paper is to compare, under Dutch market conditions, the energy consumption and net costs of membrane-based advanced treatment processes for three water reuse types (i.e. potable, industrial, agricultural reuse). The water source is municipal waste-water treatment plant effluent. Results indicate that the application of...journal article 2021
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Pallares Vega, R. (author), Macedo, Gonçalo (author), Brouwer, Michael S.M. (author), Hernandez Leal, Lucia (author), van der Maas, Peter (author), van Loosdrecht, Mark C.M. (author), Weissbrodt, D.G. (author), Heederik, Dick (author), Mevius, Dik (author), Schmitt, Heike (author)Plasmid-mediated dissemination of antibiotic resistance among fecal Enterobacteriaceae in natural ecosystems may contribute to the persistence of antibiotic resistance genes in anthropogenically impacted environments. Plasmid transfer frequencies measured under laboratory conditions might lead to overestimation of plasmid transfer potential...journal article 2021
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Pallares Vega, R. (author), Hernandez Leal, Lucia (author), Fletcher, Benjamin N. (author), Vias-Torres, Eduardo (author), van Loosdrecht, Mark C.M. (author), Weissbrodt, D.G. (author), Schmitt, Heike (author)The occurrence and removal patterns of 24 antimicrobial agents and antimicrobial resistant determinants namely 6 antibiotic resistance genes (ARGs) and 2 mobile genetic elements (MGEs), and the fecal indicator E. coli were investigated in three full-scale wastewater treatment plants. Their waterlines and biosolids lines (including secondary...journal article 2021
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- Liu, Gang (author), Qu, Jiuhui (author), van Loosdrecht, Mark C.M. (author) journal article 2021
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Pfaff, N.M. (author), Dijksman, J. A. (author), Kemperman, A. J.B. (author), van Loosdrecht, Mark C.M. (author), Kleijn, J. M. (author)Bacterial alginate-like exopolymers (ALE) gels have been used in this work as a model for the extracellular polymeric matrix of biofilms. Aim was to relate the mechanical properties and strength of this matrix that make biofilms as persistent to cleaning as they are, to the complex cohesive molecular interactions involved. Mechanical...journal article 2021
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Pinel, I.S.M. (author), Biskauskaite, R. (author), Palova, E. (author), Vrouwenvelder, J.S. (author), van Loosdrecht, Mark C.M. (author)Temperature change over the length of heat exchangers might be an important factor affect-ing biofouling. This research aimed at assessing the impact of temperature on biofilm accumulation and composition with respect to bacterial community and extracellular polymeric substances. Two identical laboratory-scale plate heat exchanger modules...journal article 2021
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Duque, Anouk F. (author), Bessa, Vânia S. (author), van Dongen, L.G.J.M. (author), de Kreuk, M.K. (author), Mesquita, Raquel B.R. (author), Rangel, António O.S.S. (author), van Loosdrecht, Mark C.M. (author), Castro, Paula M.L. (author)The presence of toxic compounds in wastewater can cause problems for organic matter and nutrient removal. In this study, the long-term effect of a model xenobiotic, 2-fluorophenol (2-FP), on ammonia-oxidizing bacteria (AOB), nitrite oxidizing bacteria (NOB) and phosphate accumulating organisms (PAO) in aerobic granular sludge was investigated...journal article 2021
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Zhang, An Ni (author), Gaston, Jeffry M. (author), Dai, Chengzhen L. (author), Zhao, Shijie (author), Poyet, Mathilde (author), Groussin, Mathieu (author), Li, Li Guan (author), van Loosdrecht, Mark C.M. (author), Zhang, Tong (author)Antibiotic resistance genes (ARGs) are widespread among bacteria. However, not all ARGs pose serious threats to public health, highlighting the importance of identifying those that are high-risk. Here, we developed an ‘omics-based’ framework to evaluate ARG risk considering human-associated-enrichment, gene mobility, and host pathogenicity....journal article 2021
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Sanawar, H. (author), Kim, L. H. (author), Farhat, N. M. (author), van Loosdrecht, Mark C.M. (author), Vrouwenvelder, J.S. (author)Biofouling is one of the major factors causing decline in membrane performance in reverse osmosis (RO) plants, and perhaps the biggest hurdle of membrane technology. Chemical cleaning is periodically carried out at RO membrane installations aiming to restore membrane performance. Typical cleaning agents used in the water treatment industry...journal article 2021
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van Dijk, E.J.H. (author), van Loosdrecht, Mark C.M. (author), Pronk, M. (author)The nitrous oxides emission was measured over 7 months in the full-scale aerobic granular sludge plant in Dinxperlo, the Netherlands. Nitrous oxide concentrations were measured in the bulk liquid and the off-gas of the Nereda® reactor. Combined with the batch wise operation of the reactor, this gave a high information density and a better...journal article 2021
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Pinel, I.S.M. (author), Hankinson, P. M. (author), Moed, D. H. (author), Wyseure, L. J. (author), Vrouwenvelder, J.S. (author), van Loosdrecht, Mark C.M. (author)Efficient control of pathogenic bacteria, specifically Legionella pneumophila, is one of the main concerns when operating industrial cooling towers. Common practices to limit proliferation involves use of disinfectants, leading to formation of disinfection by-product and increase in water corrosiveness. A disinfectant-free Legionella control...journal article 2021
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Pfaff, N.M. (author), Kleijn, J. Mieke (author), van Loosdrecht, Mark C.M. (author), Kemperman, Antoine J.B. (author)The properties of biofilm EPS are determined by the multiple interactions between its constituents and the surrounding environment. Because of the high complexity of biofilm EPS, its constituents' characterisation is still far from thorough, and identification of these interactions cannot be done yet. Therefore, we use gels of bacterial...journal article 2021
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Ochs, Pascal (author), Martin, Benjamin D. (author), Germain, Eve (author), Wu, Zhuoying (author), Lee, Po Heng (author), Stephenson, Tom (author), van Loosdrecht, Mark C.M. (author), Soares, Ana (author)Suspended sludge deammonification technologies are frequently applied for sidestream ammonia removal from dewatering liquors resulting from a thermal hydrolysis anaerobic digestion (THP/AD) process. This study aimed at optimizing the operation, evaluate the performance and stability of a full-scale suspended sludge continuous stirred tank...journal article 2021
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Estevez Alonso, A. (author), Pei, R. (author), van Loosdrecht, Mark C.M. (author), Kleerebezem, R. (author), Werker, A. (author)Conversion of organic waste and wastewater to polyhydroxyalkanoates (PHAs) offers a potential to recover valuable resources from organic waste. Microbial community-based PHA production systems have been successfully applied in the last decade at lab- and pilot-scales, with a total of 19 pilot installations reported in the scientific...review 2021
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Barrios Hernandez, M.L. (author), Bettinelli, Carolina (author), Mora-Cabrera, Karen (author), Vanegas-Camero, Maria Clara (author), Garcia, H. (author), van de Vossenberg, Jack (author), Prats, Daniel (author), Brdjanovic, Damir (author), van Loosdrecht, Mark C.M. (author)The aerobic granular sludge (AGS) process is an effective wastewater treatment technology for organic matter and nutrient removal that has been introduced in the market rapidly. Until now, limited information is available on AGS regarding the removal of bacterial and viral pathogenic organisms present in sewage. This study focussed on...journal article 2021
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Calderon Franco, D. (author), Apoorva, Seeram (author), Medema, G.J. (author), van Loosdrecht, Mark C.M. (author), Weissbrodt, D.G. (author)Wastewater treatment is challenged by the continuous emergence of chemical and biological contaminants. Disinfection, advanced oxidation, and activated carbon technologies are accessible in high-income countries to suppress them. Low-cost, easily implementable, and scalable solutions are needed for sanitation across regions. We studied the...journal article 2021
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Surkatti, Riham (author), Al Disi, Zulfa A. (author), El-Naas, Muftah H. (author), Zouari, Nabil (author), van Loosdrecht, Mark C.M. (author), Onwusogh, Udeogu (author)The gas-to-liquid (GTL) process generates considerable amounts of wastewater that are highly acidic and characterized by its high chemical oxygen demand (COD) content, due to the presence of several organic pollutants, such as alcohols, ketones, aldehydes, and fatty acids. The presence of these organics in the process water may lead to...journal article 2021
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Pereira Espíndola, S. (author), Pronk, M. (author), Zlopasa, J. (author), Picken, S.J. (author), van Loosdrecht, Mark C.M. (author)Wastewater solids could be an attractive source of secondary raw cellulose, mainly originating from toilet paper. Cellulose can be recovered through sieving of raw wastewater, return sludge, or excess sludge. In particular, a large fraction of cellulose (13–15%) can be found in the excess sludge of the aerobic granular sludge produced by the...journal article 2021
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Palmeros Parada, M.D.M. (author), van der Putten, Wim (author), van der Wielen, L.A.M. (author), Osseweijer, P. (author), van Loosdrecht, Mark C.M. (author), Pashaei Kamali, F. (author), Posada Duque, J.A. (author)Biobased production has been promoted as an alternative to fossil-based production to mitigate climate change. However, emerging concerns over the sustainability of biobased products have shown that tensions can emerge between different objectives and concerns, like emission reduction targets and food security, and that these are dependent on...journal article 2021