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Berben, Tom (author), Overmars, Lex (author), Sorokin, Dimitry Y. (author), Muyzer, Gerard (author)Soda lakes are saline alkaline lakes characterized by high concentrations of sodium carbonate/bicarbonate which lead to a stable elevated pH (>9), and moderate to extremely high salinity. Despite this combination of extreme conditions, biodiversity in soda lakes is high, and the presence of diverse microbial communities provides a driving...journal article 2019
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Hopman, Jessy (author)Recent developments in bio-based soil improvement techniques include the use of the bacterially mediated process of denitrification to alter engineering properties of soils. Pham (2017) used the denitrification process to stimulate the production of gas and precipitation of calcium carbonate as a soil improvement method. The ability to...master thesis 2018
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van den Berg, E.M. (author)The anthropogenic nitrogen inputs in the environment exceed the input by natural processes and impact the global nitrogen cycle considerably . Human meddling in the N-cycle occurs mainly in agricultural ecosystems. Loss of nitrogen from the agricultural soils, other than crop harvest, can have polluting effects on other environments. The three...doctoral thesis 2017
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van den Berg, E.M. (author), Perdigão Elisiário, M. (author), Kuenen, J.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)Denitrification and dissimilatory reduction to ammonium (DNRA) are competing nitrate-reduction processes that entail important biogeochemical consequences for nitrogen retention/removal in natural and man-made ecosystems. The nature of the available carbon source and electron donor have been suggested to play an important role on the outcome of...journal article 2017
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van den Berg, E.M. (author), Rombouts, J.L. (author), Kuenen, J.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)Denitrification and dissimilatory nitrate reduction to ammonium (DNRA) are two microbial processes that compete for oxidized nitrogen compounds in the environment. The objective of this work was to determine the role of nitrite versus nitrate as terminal electron acceptor on the competition between DNRA and denitrification. Initially, a mixed...journal article 2017
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Rasigraf, Olivia (author), Schmitt, Julia (author), Jetten, M.S.M. (author), Lüke, Claudia (author)The biological nitrogen cycle is driven by a plethora of reactions transforming nitrogen compounds between various redox states. Here, we investigated the metagenomic potential for nitrogen cycle of the in situ microbial community in an oligotrophic, brackish environment of the Bothnian Sea sediment. Total DNA from three sediment depths was...journal article 2017
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van den Berg, E.M. (author), Boleij, M. (author), Kuenen, J.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)Denitrification and dissimilatory nitrate reduction to ammonium (DNRA) compete for nitrate in natural and engineered environments. A known important factor in this microbial competition is the ratio of available electron donor and elector acceptor, here expressed as Ac/N ratio (acetate/nitrate-nitrogen). We studied the impact of the Ac/N ratio...journal article 2016
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Rodríguez-Escales, Paula (author), Folch, Albert (author), van Breukelen, B.M. (author), Vidal-Gavilan, Georgina (author), Sanchez-Vila, Xavier (author)Enhanced In situ Biodenitrification (EIB) is a capable technology for nitrate removal in subsurface water resources. Optimizing the performance of EIB implies devising an appropriate feeding strategy involving two design parameters: carbon injection frequency and C:N ratio of the organic substrate nitrate mixture. Here we model data on the...journal article 2016
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Rodríguez-Escales, Paula (author), Folch, Albert (author), Vidal-Gavilan, Georgina (author), van Breukelen, B.M. (author)Enhanced in situ biodenitrification (EIB) is a feasible technology to clean nitrate-polluted groundwater and reach<br/>drinking water standards. Aimed at enabling a better monitoring and management of the technology at the field<br/>scale, we developed a two-dimensional reactive transport model (RTM) of a cross section (26.5 × 4 m) of a...journal article 2016
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Rombouts, J.L. (author)Dissimilatory reduction of nitrite to ammonium (DNRA) and denitrification are two biological processes that occur in natural and man-made ecosystems, where nitrate and nitrite are the terminal electron acceptors. The understanding of the environmental factors that determine which of these processes dominate, can contribute to optimising...master thesis 2015
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Kampschreur, M.J. (author), Kleerebezem, R. (author), Picioreanu, C. (author), Bakken, L. (author), Bergaust, L. (author), De Vries, S. (author), Jetten, M.S.M. (author), Van Loosdrecht, M.C.M. (author)A metabolic network model for facultative denitrification was developed based on experimental data obtained with Agrobacterium tumefaciens. The model includes kinetic regulation at the enzyme level and transcription regulation at the enzyme synthesis level. The objective of this work was to study the key factors regulating the metabolic response...journal article 2012
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- Kampschreur, M.J. (author), Kleerebezem, R. (author), Picioreanu, C. (author), Bakken, L. (author), Bergaust, L. (author), De Vries, S. (author), Jetten, M.S.M. (author), Van Loosdrecht, M.C.M. (author) journal article 2012
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Bassin, J.P. (author)The removal of nutrients such as nitrogen and phosphorus from both domestic and industrial wastewaters is imperative since they potentially harm the environment. One of the main consequences of excessive availability of nitrogen and phosphorus in aquatic ecosystems (freshwater, marine and estuarine) is the overgrowth of algae and other aquatic...doctoral thesis 2012
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Kampschreur, M.J. (author)Nitric oxide (NO) and nitrous oxide (N2O) emissions can be a serious threat to the environment. Rising levels of N2O in the atmosphere contribute to global warming and destruction of the ozone layer. This thesis describes an investigation on the emission of NO and N2O during nitrogen conversion processes. Emissions were measured at wastewater...doctoral thesis 2010
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Shapovalova, A.A. (author), Khijniak, T.V. (author), Tourova, T.P. (author), Muyzer, G. (author), Sorokin, Y. (author)In this paper we describe denitrification at extremely high salt and pH in sediments from hypersaline alkaline soda lakes and soda soils. Experiments with sediment slurries demonstrated the presence of acetate-utilizing denitrifying populations active at in situ conditions. Anaerobic enrichment cultures at pH 10 and 4 M total Na+ with acetate as...journal article 2008
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- Kampschreur, M.J. (author), Picioreanu, C. (author), Tan, N. (author), Kleerebezem, R. (author), Jetten, M.S. (author), Van Loosdrecht, M.C.M. (author) journal article 2007
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De Kreuk, M.K. (author)Most conventional wastewater treatment plants need a large surface area for the treatment of their sewage. This is due to the open structure of the biomass used to convert the polluting components in wastewater. Because of the flocculated growth, sludge concentrations in reaction tanks are low and settling times need to be long in order to keep...doctoral thesis 2006
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- Van Rein, H.J. (author), Wolf, B.B. (author), Juan, Y.J. (author), Van de Weg, M. (author), Nijenhuis, J. (author) report 2006
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Risgaard-Petersen, N. (author), Meyer, R.L. (author), Schmid, M. (author), Jetten, M.S.M. (author), Enrich-Prast, A. (author), Rysgaard, S. (author), Revsbech, N.P. (author)The occurrence and significance of the anammox (anaerobic ammonium oxidation) process relative to denitrification was studied in photosynthetically active sediment from 2 shallow-water estuaries: Randers Fjord and Norsminde Fjord, Denmark. Anammox accounted for 5 to 24% of N2 production in Randers Fjord sediment, whereas no indication was seen...journal article 2004
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Anonymous, A. (author)The objective of this project was to evaluate the beneficial effects of wetlands on flood risk reduction and water quality improvement in the Rhine. The analysis of wetland effects on flood risk reduction aimed at evaluating whether the position of a wetland in the basin upstream or downstream will influence the added value of the wetlands...report 2002