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Pei, R. (author), Vicente-Venegas, Gerard (author), van Loosdrecht, Mark C.M. (author), Kleerebezem, R. (author), Werker, A. (author)Polyhydroxyalkanoate accumulation experiments at pilot scale were performed with fullscale municipal waste activated sludge. Development of biomass PHA content was quantified by thermogravimetric analysis. Over 48 h the biomass reached up to 0.49 ± 0.03 gPHA/gVSS (n=4). Samples were processed in parallel to characterise the distribution of...journal article 2022
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Hao, Xiaodi (author), Wang, Xiangyang (author), Shi, Chen (author), van Loosdrecht, Mark C.M. (author), Wu, Yuanyuan (author)Sludge incineration and seawater desalination are two approaches that can be used in the disposal of waste activated sludge (WAS) and for obtaining fresh water. As resource recovery from wastewater treatment and water purification is a topic of particular interest in these times, “water mining” has become a focus of research, with phosphate/P...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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Ekholm, Jennifer (author), Persson, Frank (author), de Blois, Mark (author), Modin, Oskar (author), Pronk, M. (author), van Loosdrecht, Mark C.M. (author), Suarez, Carolina (author), Gustavsson, David J.I. (author), Wilén, Britt Marie (author)Aerobic granular sludge (AGS) plants have gained growing interest and application due to their low energy demand, small footprint, and low operational costs. However, the fulfilment of strict discharge limits for nitrogen and phosphorus, vast seasonal temperature variations, and large peaks in influent flows may pose challenges to the...journal article 2022
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Prot, T.J.F. (author), Korving, L. (author), van Loosdrecht, Mark C.M. (author)In a wastewater treatment plant (WWTP), several sludge streams exist and the composition of their liquid phase varies with time and place. For evaluating the potential for formation of precipitates and equilibria for weak acids/bases, the ionic strength and chemical composition need to be known. This information is often not available in...journal article 2022
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Hao, Xiaodi (author), Wu, Daoqi (author), Li, Ji (author), Liu, Ranbin (author), van Loosdrecht, Mark C.M. (author)Entropy is a concept defined by the second law of thermodynamics. Applying this concept to the world we live in, entropy production must be minimized and negentropy (negative entropy production) should be accelerated, in order to produce a healthy and stable ecological system. The present wastewater treatment, however, contributes to entropy...journal article 2022
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Hao, Xiaodi (author), Yu, W. (author), Yuan, Tugui (author), Wu, Yuanyuan (author), van Loosdrecht, Mark C.M. (author)As a product of phosphorous recovery from anaerobic digestion (AD) of waste activated sludge (WAS), vivianite has received increasing attention. However, key factors controlling vivianite formation have not yet been fully addressed. Thus, this study was initiated to ascertain key factors controlling vivianite formation. A simulation of...journal article 2022
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Pei, R. (author), Estevez Alonso, A. (author), Ortiz-Seco, Laura (author), van Loosdrecht, Mark C.M. (author), Kleerebezem, R. (author), Werker, A. (author)Municipal activated sludge can be used for polyhydroxyalkanoate (PHA) production, when supplied with volatile fatty acids. In this work, standardized PHA accumulation assays were performed with different activated sludge to determine (1) the maximum biomass PHA content, (2) the degree of enrichment (or volume-to-volume ratio of PHA...journal article 2022
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Goedhart, R.C. (author), Müller, S. (author), van Loosdrecht, Mark C.M. (author), van Halem, D. (author)Iron in anaerobic groundwater is commonly removed by oxidation followed by sand filtration. This produces large volumes of iron(III)(hydr)oxide sludge with little value. Our research investigates the novel concept of anaerobic iron(II) recovery from groundwater as the valuable mineral vivianite (Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> • 8...journal article 2022
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Prot, T.J.F. (author), Pannekoek, W. (author), Belloni, C. (author), Dugulan, A.I. (author), Hendrikx, R.W.A. (author), Korving, L. (author), van Loosdrecht, Mark C.M. (author)It was recently discovered that vivianite (Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>.8H<sub>2</sub>O) could be magnetically extracted from digested activated sludge which opened a new route for phosphorus recovery (Wijdeveld et al. 2022). While its formation in digested sludge is regularly reported, it is not yet studied for fresh,...journal article 2022
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Prot, T.J.F. (author), Korving, L. (author), Dugulan, A.I. (author), Goubitz, K. (author), van Loosdrecht, Mark C.M. (author)The presence of soluble iron and phosphorus in wastewater sludge can lead to vivianite scaling. This problem is not often reported in literature, most likely due to the difficult identification and quantification of this mineral. It is usually present as a hard and blue deposit that can also be brown or black depending on its composition and...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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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
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- Liu, Gang (author), Qu, Jiuhui (author), van Loosdrecht, Mark C.M. (author) 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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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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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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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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Estevez Alonso, A. (author), van Loosdrecht, Mark C.M. (author), Kleerebezem, R. (author), Werker, A. (author)Microbial community-based polyhydroxyalkanoate (PHA) production has been demonstrated repeatedly at pilot scale. Ammonium, normally present in waste streams, might be oxidized by nitrifying bacteria resulting in additional aeration energy demand. The use of low dissolved oxygen (DO) concentrations allowed to reduce nitrifying rates by up to...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