Searched for: contributor%3A%22van+Loosdrecht%2C+Mark+C.M.+%28promotor%29%22
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Gabriel Guedes da Silva, L. (author)Cells are complex systems continuously exposed to changing, dynamic environments. Understanding how cells respond and adapt is of great interest not only from a fundamental viewpoint but also for the development of solutions for current challenges in medical, industrial and environmental research fields.<br/><br/>In this thesis, the bacterial...doctoral thesis 2021
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Mulders, M. (author)Volatile fatty acids (VFA) may serve as building blocks for Polyhydroxyalkanoates (PHA) production and can be derived from waste streams. Ideal streams for PHA production contain a high Chemical Oxygen Demand (COD) to nutrient ratio, such as (waste)water from a paper-mill factory or candy-bar factory. The (waste)water generated by these...doctoral thesis 2021
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Velasco Alvarez, M.I. (author)A wide variety of microorganisms are increasingly being employed for the production of a broad diversity of compounds, instead of using fossil fuel. The production of such compounds faces different challenges for an optimized production. Identifying the bottlenecks in the synthesis of such products offers the possibility to reduce these...doctoral thesis 2021
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Vasilakou, E. (author)Dynamic environmental conditions govern microbial metabolism and affect cellular growth. Many applications in biotechnology require cultivating microorganisms in large-scale bioreactors. These environments are commonly characterized by physicochemical gradients, due to imperfect mixing and have been the cause of reduced...doctoral thesis 2020
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Pfaff, N.M. (author)Biofilms are the prevalent form of bacterial life on earth. Bacteria aggregate and embed themselves in a hydrogel matrix of extracellular polymeric substances (EPS), often spread over surfaces in thin films. The EPS matrix of biofilms is getting more and more attention from scientists for several reasons. On the one hand, it has been identified...doctoral thesis 2020
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Boleij, M. (author)In biofilms, microorganisms are embedded in a hydrated matrix that provides a stable structure and protection against influences fromthe environment. Thismatrix is formed by extracellular polymeric substances (EPS) that are produced by the microorganisms of the biofilm. A major part of the microorganisms in nature lives in aggregated forms like...doctoral thesis 2020
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Valk, L.C. (author)Over the past decade the demand for technology which can make our global economy more sustainable has increased exponentially. In the field of biotechnology, one of the many advancements is focussed on the conversion of agricultural waste streams towards commodity chemicals. Plant biomass can be an environmental and sustainable alternative for...doctoral thesis 2020
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de Graaff, D.R. (author)Increase in sea level will lead to an increase in salinity in domestic wastewater systems. In order to anticipate its effects on biological wastewater treatment, the impact has to be assessed with lab-scale experiments. Aerobic granular sludge (AGS) is a successful technology for simultaneous removal of organic carbon (COD), nitrogen, and...doctoral thesis 2020
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Rombouts, J.L. (author)Microbial fermentations are a key process in naturally and man-made ecosystems. Microbial fermentations play a key role in creating and digesting our food and they are useful in designing bioprocesses that can produce biogas, biofuels, bioplastics, and many other functional molecules (Chapter 1). Furthermore, studying the competition and...doctoral thesis 2020
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Felz, S. (author)Biofilms are pervasive in hydrated environments including wastewater and drinking water systems. A novel promising biological wastewater treatment process offering several advantages towards wastewater treatment with the conventional activated sludge process is the aerobic granular sludge process. Aerobic granular sludge is a special kind of...doctoral thesis 2019
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Zetty Arenas, A.M. (author)Nowadays, the biotechnology industry is facing the challenge of producing suitable equivalents for petroleum-based products from renewable resources in a sustainable and economically feasible way. Finding cleaner alternatives for gasoline, fuels, and chemicals, has been the subject of research worldwide, whether for economic, geopolitical, or...doctoral thesis 2019
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Conthe Calvo, M. (author)With its rapidly rising concentration in the atmosphere and its high global warming potential, N2O is arguably the greenhouse gas of the 21st century. The research carried out within the Nitrous Oxide Research Alliance (NORA) – of which this thesis forms part of – focused on the microbial conversions of N2O within the nitrogen cycle, the...doctoral thesis 2018
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Suresh Kumar, P. (author)Eutrophication and the resulting formation of harmful algal blooms causes huge economic and environmental damages. Phosphorus (P) has been identified as a major limiting nutrient for eutrophication. Phosphorous concentration greater than 100 µg P/L is usually considered high enough for causing eutrophication. The strictest regulations however...doctoral thesis 2018
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Keuten, M.G.A. (author)As swimmers enter a swimming pool, they release micro-organisms, particles and soluble substances. While chlorine is often used to inactivate micro-organisms, a side-effect of chlorination is the formation of unwanted disinfection by-products. In order to reduce these by-products, more knowledge is needed on the release of pollutants by bathers...doctoral thesis 2018
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El Chakhtoura, J. (author)Water crises are predicted to be amongst the risks of highest concern for the next ten years, due to availability, accessibility, quality and management issues. Knowledge of the microbial communities indigenous to drinking water is essential for treatment and distribution process control, risk assessment and infrastructure design. Drinking water...doctoral thesis 2018
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Wilfert, P.K. (author)The scope of this thesis was to lay the basis for a phosphate recovery technology that can be applied on sewage sludge containing iron phosphate. Such a technology should come with minimal changes to the existing sludge treatment configuration while keeping the use of chemicals or energy as small as possible. The research focused on...doctoral thesis 2018
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Hoekstra, M. (author)Currently wastewater treatment plants (WWTP) consume a lot of energy and surface area. While the incoming water contains chemical energy (BOD) and reusable resources which are not effectively utilized. The ideal is to develop a treatment scheme which allows for the efficient removal of pollutants while minimizing the energy input and maximizing...doctoral thesis 2017
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Marang, L. (author)Polyhydroxyalkanoates (PHAs) are microbial storage polymers accumulated by many different prokaryotes as an intracellular carbon and energy reserve. The polymer properties make PHA interesting as bioplastic. Moreover, the monomers could serve as chiral building blocks or be used as a biofuel.<br/>Currently, PHA is commercially produced using...doctoral thesis 2017
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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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Korkakaki, E. (author)Polyhydroxyalkanoates (PHA) are compounds naturally produced by microorganisms, with many industrial applications, either as bioplastics or as precursors for production of chemicals. Until now, industrial PHA production was conducted with pure strains of bacteria fed with well-defined feedstocks, making the overall process non-economically...doctoral thesis 2017
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