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Gonzalez-Martinez, A. (author), Rodriguez-Sanchez, A. (author), Lotti, T. (author), Garcia-Ruiz, M.J. (author), Gonzalez-Lopez, J. (author), Van Loosdrecht, M.C.M. (author)The bacterial community structure of 10 different wastewater treatment systems and their influents has been investigated through pyrosequencing, yielding a total of 283486 reads. These bioreactors had different technological configurations: conventional activated sludge (CAS) systems and very highly loaded A-stage systems. A-stage processes are...journal article 2016
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Prest, E.I.E.D. (author), Hammes, F. (author), Van Loosdrecht, M.C.M. (author), Vrouwenvelder, J.S. (author)Biological stability of drinking water refers to the concept of providing consumers with drinking water of same microbial quality at the tap as produced at the water treatment facility. However, uncontrolled growth of bacteria can occur during distribution in water mains and premise plumbing, and can lead to hygienic (e.g., development of...journal article 2016
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Gonzalez-Martinez, A. (author), Rodriguez-Sanchez, A. (author), Rodelas, B. (author), Abbas, B.A. (author), Martinez-Toledo, M.V. (author), Van Loosdrecht, M.C.M. (author), Osorio, F. (author), Gonzalez-Lopez, J. (author)Identification of anaerobic ammonium oxidizing (anammox) bacteria by molecular tools aimed at the evaluation of bacterial diversity in autotrophic nitrogen removal systems is limited by the difficulty to design universal primers for the Bacteria domain able to amplify the anammox 16S rRNAgenes.Ametagenomic analysis (pyrosequencing) of total...journal article 2015
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Lin, Y. (author), Al-Zuhairy, S. (author), Pronk, M. (author), Van Loosdrecht, M.C.M. (author)In a prior art reactor set up dense aggregates of microorganisms are formed, typically in or embedded in an extracellular matrix. Such may relate to granules, to sphere like entities having a higher viscosity than water, globules, a biofilm, etc. The dense aggregates comprise extracellular polymeric substances, or biopolymers, in particular...patent 2015
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Junicke, H. (author), Van Loosdrecht, M.C.M. (author), Kleerebezem, R. (author)Many anaerobic conversions proceed close to thermodynamic equilibrium and the microbial groups involved need to share their low energy budget to survive at the thermodynamic boundary of life. This study aimed to investigate the kinetic and thermodynamic control mechanisms of the electron transfer during syntrophic butyrate conversion in non...journal article 2015
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Kleerebezem, R. (author), Joosse, B. (author), Rozendaal, R. (author), Van Loosdrecht, M.C.M. (author)Anaerobic digestion for the production of methane containing biogas is the classic example of a resource recovery process that combines stabilization of particulate organic matter or wastewater treatment with the production of a valuable end-product. Attractive features of the process include the production of a single end-product from a...journal article 2015
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Mooij, P.R. (author), De Jongh, L.D. (author), Van Loosdrecht, M.C.M. (author), Kleerebezem, R. (author)Microalgae have the potential to supply a biobased society with essential feedstocks like sugar and lipids. Besides being productive, strains used for this purpose should grow fast, be resistant to predators, and have good harvestability properties. Diatoms, a class of siliceous algae, have these and other preferred characteristics. In this...journal article 2015
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Lin, Y.M. (author), Nierop, K.G.J. (author), Girbal-Neuhauser, E. (author), Adriaanse, M. (author), Van Loosdrecht, M.C.M. (author)To evaluate the possibility of utilizing polysaccharide-based biomaterial recovered from aerobic granular sludge as a coating material, the morphology, molecular weight distribution and chemical composition of the recovered biomaterial were investigated by atomic force microscopy, size exclusion chromatography and pyrolysis–GC–MS to have a...journal article 2015
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Pronk, M. (author), Abbas, B. (author), Kleerebezem, R. (author), Van Loosdrecht, M.C.M. (author)The influence of sludge age on granular sludge formation and microbial population dynamics in a methanol- and acetate-fed aerobic granular sludge system operated at 35°C was investigated. During anaerobic feeding of the reactor, methanol was initially converted to methane by methylotrophic methanogens. These methanogens were able to withstand...journal article 2015
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Van Loosdrecht, M.C.M. (author), Lin, Y. (author), Pronk, M. (author)The present invention concerns a method of producing linear polysaccharides, bacteria capable of producing such linear polysaccharides, and uses of such linear polysaccharides, as a medicament, in agriculture, in food processing, as a coating, as a thickening agent, as a flocculating agent, and for water processing.patent 2015
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Janulevicius, A. (author), Van Loosdrecht, M.C.M. (author), Picioreanu, C. (author)Myxobacteria are social bacteria that upon starvation form multicellular fruiting bodies whose shape in different species can range from simple mounds to elaborate tree-like structures. The formation of fruiting bodies is a result of collective cell movement on a solid surface. In the course of development, groups of flexible rod-shaped cells...journal article 2015
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Van Loosdrecht, M.C.M. (author), Yuemei, L. (author), Lotti, T. (author)The present invention is in the field of papermaking and relates in particular to sizing paper. Problems with state of the art methods are that the sizing chemicals used are typically expensive; may be available only in limited supply; are produced using methods that are damaging to the environment; and whose production is far from carbon...patent 2015
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Mooij, P.R. (author), Van Loosdrecht, M.C.M. (author), Kleerebezem, R. (author)The invention is directed to a method for producing an enriched diatom culture, comprising subjecting a starting culture comprising one or more diatom species to selective pressure, thus giving a competitive advantage to storage compound producing species of diatoms, by subjecting said starting culture, under non-limiting bioavailable silicon...patent 2015
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Sevcenco, A.M. (author), Paravidino, M. (author), Vrouwenvelder, J.S. (author), Wolterbeek, H.T. (author), Van Loosdrecht, M.C.M. (author), Hagen, W.R. (author)Oxo-anion binding properties of the thermostable enzyme ferritin from Pyrococcus furiosus were characterized with radiography. Radioisotopes 32P and 76As present as oxoanions were used to measure the extent and the rate of their absorption by the ferritin. Thermostable ferritin proved to be an excellent system for rapid phosphate and arsenate...journal article 2015
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Tamis, J. (author), Sorokin, D.Y. (author), Jiang, Y. (author), Van Loosdrecht, M.C.M. (author), Kleerebezem, R. (author)Background Many waste streams have a relatively high vegetable oil content, which is a potential resource that should be recovered. Microbial storage compound production for the recovery of lipids from lipid-water emulsions with open (unsterilized) microbial cultures was investigated in a sequencing batch reactor using a diluted vegetable oil...journal article 2015
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Effect and behaviour of different substrates in relation to the formation of aerobic granular sludgePronk, M. (author), Abbas, B. (author), Al-zuhairy, S.H.K. (author), Kraan, R. (author), Kleerebezem, R. (author), Van Loosdrecht, M.C.M. (author)When aerobic granular sludge is applied for industrial wastewater treatment, different soluble substrates can be present. For stable granular sludge formation on volatile fatty acids (e.g. acetate), production of storage polymers under anaerobic feeding conditions has been shown to be important. This prevents direct aerobic growth on readily...journal article 2015
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Zhang, F. (author), Zhang, Y. (author), Ding, J. (author), Dai, K. (author), Van Loosdrecht, M.C.M. (author), Zeng, R.J. (author)The control of metabolite production is difficult in mixed culture fermentation. This is particularly related to hydrogen inhibition. In this work, hydrogenotrophic methanogens were selectively enriched to reduce the hydrogen partial pressure and to realize efficient acetate production in extreme-thermophilic (706C) mixed culture fermentation....journal article 2014
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Junicke, H. (author), Abbas, B. (author), Oentoro, J. (author), Van Loosdrecht, M. (author), Kleerebezem, R. (author)Identification of individual biomass concentrations is a crucial step towards an improved understanding of anaerobic digestion processes and mixed microbial conversions in general. The knowledge of individual biomass concentrations allows for the calculation of biomass specific conversion rates which form the basis of anaerobic digestion models....journal article 2014
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Lackner, S. (author), Gilbert, E.M. (author), Vlaeminck, S.E. (author), Joss, A. (author), Horn, H. (author), Van Loosdrecht, M.C.M. (author)Partial nitritation/anammox (PN/A) has been one of the most innovative developments in biological wastewater treatment in recent years. With its discovery in the 1990s a completely new way of ammonium removal from wastewater became available. Over the past decade many technologies have been developed and studied for their applicability to the PN...journal article 2014
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Method for obtaining an open phototrophic culture with improved storage compound production capacityTamis, J. (author), Kleerebezem, R. (author), Van Loosdrecht, M.C.M. (author)The invention is directed to a method for producing an open phototrophic culture with improved storage compound production capability. In accordance with the invention, a starting culture is submitted to selective pressure, thus giving a competitive advantage to storage compound producing species, by subjecting said starting culture to a cycle...patent 2013