Searched for: author%3A%22Kleerebezem%2C+R.%22
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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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Rossi, E. (author), Vermeer, C.M. (author), Mors, R.M. (author), Kleerebezem, R. (author), Copuroglu, Oguzhan (author), Jonkers, H.M. (author)
Bacteria-based self-healing concrete has the ability to heal cracks due to the bacterial conversion of incorporated organic compounds into calcium carbonate. Precipitates seal the cracks, theoretically increasing the service life of constructions. The aim of this paper is to propose a precursor for bacteria-based self-healing concrete derived...
journal article 2021
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Stouten, G.R. (author), Hamers, Kelly (author), van Tatenhove-Pel, R.J. (author), van der Knaap, E.D. (author), Kleerebezem, R. (author)
Microbial community engineering aims for enrichment of a specific microbial trait by imposing specific cultivation conditions. This work demonstrates that things may be more complicated than typically presumed and that microbial competition can be affected by seemingly insignificant variables, like in this case the type of acid used for pH...
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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Allaart, M.T. (author), Stouten, G.R. (author), Sousa, Diana Z. (author), Kleerebezem, R. (author)
Anaerobic microbial communities can produce carboxylic acids of medium chain length (e.g., caproate, caprylate) by elongating short chain fatty acids through reversed β-oxidation. Ethanol is a common electron donor for this process. The influence of environmental conditions on the stoichiometry and kinetics of ethanol-based chain elongation...
journal article 2021
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Moscoviz, Roman (author), Kleerebezem, R. (author), Rombouts, J.L. (author)
Bioethanol production is an established biotechnological process. Margins are low which prevent a larger scale production of bioethanol. As a large part of the production cost is due to the feedstock, the use of low value unsterile feedstocks fermented by microbial communities will enable a more cost-competitive bioethanol production. To...
review 2021
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Tamis, J. (author), Joosse, B.M. (author), de Leeuw, K.D. (author), Kleerebezem, R. (author)
In this study, we investigated the operational performance and product spectrum of glucose-fermenting anaerobic granular sludge reactor at pH 4. A selective environment for the growth of granules was implemented by the introduction of a 2 min settling phase, a hydraulic retention time of 6 h and a solid retention time of 12 ± 3 days. The...
journal article 2021
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Kleerebezem, R. (author), Stouten, G.R. (author), Koehorst, Jasper (author), Langenhoff, Alette (author), Schaap, Peter (author), Smidt, Hauke (author)
Natural microbial communities are composed of a large diversity of interacting microorganisms, each with a specific role in the functional properties of the ecosystem. The objectives in microbial ecology research are related to identifying, understanding and exploring the role of these different microorganisms. Because of the rapidly...
review 2021
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Vermeer, C.M. (author), Rossi, E. (author), Tamis, J. (author), Jonkers, H.M. (author), Kleerebezem, R. (author)
Polyhydroxyalkanoate (PHA) production is a promising opportunity to recover organic carbon from waste streams. However, widespread application of waste-derived PHA as biodegradable plastic is restricted by expensive purification steps, high quality requirements, and a fierce competition with the conventional plastic market. To overcome these...
journal article 2021
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Kleerebezem, R. (author), Lücker, Sebastian (author)
The cyclic nature of specific conversions in the nitrogen cycle imposes strict limitations to the conversions observed in nature and explains for example why anaerobic ammonium oxidation (anammox) bacteria can only use nitrite – and not nitrate – as electron acceptor in catabolism, and why nitrite is required as additional electron donor for...
journal article 2021
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Mulders, M. (author), Tamis, J. (author), Stouten, G.R. (author), Kleerebezem, R. (author)
The wide variety of organic carbon to nitrogen and phosphorous ratios that are encountered in different wastewaters has a major impact on the poly(3-hydroxybutyrate) (PHB) accumulation potential of microbial communities. In this study we investigated the influence of the substrate composition in terms of the carbon to nitrogen (C/N) or...
journal article 2020
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Rombouts, J.L. (author), Kranendonk, Elsemiek Madeleine Maria (author), Regueira, Alberte (author), Weissbrodt, D.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
Lactic acid-producing bacteria are important in many fermentations, such as the production of biobased plastics. Insight in the competitive advantage of lactic acid bacteria over other fermentative bacteria in a mixed culture enables ecology-based process design and can aid the development of sustainable and energy-efficient bioprocesses....
journal article 2020
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Ceron Chafla, P.S. (author), Kleerebezem, R. (author), Rabaey, Korneel (author), van Lier, J.B. (author), Lindeboom, R.E.F. (author)
Simultaneous digestion and in situ biogas upgrading in high-pressure bioreactors will result in elevated CO2 partial pressure (pCO2). With the concomitant increase in dissolved CO2, microbial conversion processes may be affected beyond the impact of increased acidity. Elevated pCO2 was reported to affect the kinetics and thermodynamics of...
journal article 2020
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Mulders, M. (author), Tamis, J. (author), Abbas, B.A. (author), Sousa, João (author), Dijkman, Henk (author), Rozendal, René (author), Kleerebezem, R. (author)
Polyhydroxyalkanoate (PHA) accumulating microbial enrichment was established on volatile fatty acids (VFAs) containing leachate derived from the organic fraction of municipal solid waste (OFMSW). The enrichment was based on a 12-h feast-famine batch cycle and an exchange ratio of 50% in which VFAs were completely consumed in less than 50 min...
journal article 2020
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Conthe Calvo, M. (author), Lycus, Pawel (author), Arntzen, Magnus (author), Ramos da Silva, Aline (author), Frostegård, Åsa (author), Bakken, Lars R. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
The strong greenhouse gas nitrous oxide (N<sub>2</sub>O) can be emitted from wastewater treatment systems as a byproduct of ammonium oxidation and as the last intermediate in the stepwise reduction of nitrate to N<sub>2</sub> by denitrifying organisms. A potential strategy to reduce N<sub>2</sub>O emissions would be to enhance the activity of...
journal article 2019
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Soler Jofra, A. (author), Wang, R. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author), Pérez, Julio (author)
A lab-scale partial nitritation granular sludge air-lift reactor was operated in continuous mode treating low strength synthetic medium (influent ca. 50 mg-N-NH<sub>4</sub> <sup>+</sup>/L). Granules were initially stratified with AOB in the external shell and NOB in the inner core at 20 °C. Once temperature was decreased progressively from 20...
journal article 2019
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Rombouts, J.L. (author), Mos, G. (author), Weissbrodt, D.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
A mechanistic understanding of microbial community establishment and product formation in open fermentative systems can aid the development of bioprocesses utilising organic waste. Kinetically, a single rate-limiting substrate is expected to result in one dominant species. Four enrichment cultures were operated to ferment either xylose or...
journal article 2019
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Rombouts, J.L. (author), Mos, Galvin (author), Weissbrodt, D.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
Efficient industrial fermentation of lignocellulosic waste containing a large part of glucose and xylose is desirable to implement a circular economy. Mixed culture biotechnologies can aid in realizing this goal. The effect of feeding equivalent substrates to a microbial community, such a xylose and glucose, is not well understood in terms of...
journal article 2019
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Conthe Calvo, M. (author), Wittorf, Lea (author), Kuenen, J.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author), Hallin, Sara (author)
Reduction of the greenhouse gas N<sub>2</sub>O to N<sub>2</sub> is a trait among denitrifying and non-denitrifying microorganisms having an N<sub>2</sub>O reductase, encoded by nosZ. The nosZ phylogeny has two major clades, I and II, and physiological differences among organisms within the clades may affect N<sub>2</sub>O emissions from...
journal article 2018
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Conthe Calvo, M. (author), Parchen, C.M. (author), Stouten, G.R. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
Despite its ecological importance, essential aspects of microbial N<sub>2</sub>O reduction—such as the effect of O<sub>2</sub> availability on the N<sub>2</sub>O sink capacity of a community—remain unclear. We studied N<sub>2</sub>O vs. aerobic respiration in a chemostat culture to explore (i) the extent to which simultaneous respiration of N...
journal article 2018
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