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de Jong, A.J. (author), van Vliet, L.D. (author), Hoegaerts, C.L.G. (author), Roelands, C.P.M. (author), Cuypers, R. (author)Long-term and compact storage of solar energy is crucial for the eventual transition to a 100% renewable energy economy. For this, thermochemical materials provide a promising solution. The compactness of a long-term storage system is determined by the thermochemical reaction, operating conditions, and system implementation with the necessary...conference paper 2016
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Mazubert, A. (author), Crockatt, M. (author), Poux, M. (author), Aubin, J. (author), Roelands, C.P.M. (author)Esterification of the fatty acids contained in waste cooking oil with glycerol, a reaction involving immiscible and viscous reactants, was achieved in two pilot-scale continuous pulsed reactors: the oscillatory baffled reactor and the helix reactor. In both reactors, with or without baffles, the reaction reaches its thermodynamic equilibrium at...article 2015
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Roelands, C.P.M. (author), Cuypers, R. (author), Kruit, K.D. (author), Oversloot, H.P. (author), de Jong, A.J. (author), Duvalois, W. (author), van Vliet, L. (author), Hoegaerts, C.L.G. (author)Bottlenecks for realizing a commercial system for thermochemical heat storage (TCS) with hygroscopic salts are the chemical, physical and mechanical stability of the salt under operation conditions. Hence, improved knowledge of thermochemical materials (TCMs) is critical to spur progress in TCS system development. Sodium sulfide hydrates (Na2S...conference paper 2015
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Creusen, R.J.M. (author), van Medevoort, J. (author), Roelands, C.P.M. (author), van Renesse van Duivenbode, J.A.D. (author), Hanemaaijer, J.H. (author), van Leerdam, R.C. (author)The goal of this research is to design an integrated membrane distillation-crystallization (MDC) process for desalination of seawater with pure water and dry salts as the only products. The process is based on a combination of membrane distillation (MD) and osmotic distillation (OD) steps with integrated crystallization. In the first MD step...article 2013
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Ngene, I.S. (author), Roelands, C.P.M. (author)Today, a lot of effort is going into intensifying reactions within the chemicals industry. Intensified processes are expected to delìver significant improvements in manufacturing processes, reducing equipment size and waste streams and increasing product yields and thereby delivering more sustainable process conditions.article 2012
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Urbanus, J. (author), Roelands, C.P.M. (author), Verdoes, D. (author), ter Horst, J.H. (author)This paper presents heuristics for the integration of fermentation with the appropriate crystallization based in-situ product recovery (ISPR) technique. Here techniques, such as co-crystallization (CC), evaporative crystallization (EC), template induced crystallization (TIC), cooling crystallization (ClC) and electrochemically induced...article 2012
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- Creusen, R.J.M. (author), van Medevoort, J. (author), Roelands, C.P.M. (author), van Renesse van Duivenbode, J.A.D. (author) article 2012
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Nasrollahnejad, T. (author), Urbanus, J. (author), ter Horst, J.H. (author), Verdoes, D. (author), Roelands, C.P.M. (author)Carboxylic acids are key platform chemicals for use as biobased alternatives for fossil-based applications. State-of-the-art fermentations of carboxylic acids at neutral pH with downstream product recovery by pH-shift crystallization are not sustainable due to the accompanied production of waste salts. To earn the label"sustainable," salts...article 2012
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Urbanus, J. (author), Roelands, C.P.M. (author), Mazurek, J. (author), Verdoes, D. (author), ter Horst, J.H. (author)We demonstrate the potential of co-crystallization combined with electrochemistry for in situ product removal of carboxylic acids. Proof-of-principle is established using a cinnamic acid:3-nitrobenzamide (HCA:NBA) co-crystal system. This technology can be applied in the bio-based production of essential "green" building blocks. © 2011 The Royal...article 2011
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Heerema, L. (author), Wierckx, N. (author), Roelands, C.P.M. (author), Hanemaaijer, J.H. (author), Goetheer, E.L.V. (author), Verdoes, D. (author), Keurentjes, J. (author)In situ phenol pertraction with 1-octanol has been experimentally studied to improve the production of the model component phenol by a recombinant strain of Pseudomonas putida S12. When the phenol concentration in the reactor reaches 2mM, the cells in fermentations without phenol removal are inhibited in growth and phenol production. Growth and...article 2011
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- Roelands, C.P.M. (author), Ngene, I.S. (author) conference paper 2011
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Heerema, L. (author), Roelands, C.P.M. (author), Goetheer, E.L.V. (author), Verdoes, D. (author), Keurentjes, J. (author)This paper describes a conceptual process design for the production of the model component phenol by a recombinant strain of the micro-organism Pseudomonas putida S12. The (bio)production of the inhibiting component phenol in a bioreactor is combined with direct product removal by membrane extraction (pertraction). Continuous fermentation with...article 2011
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Roelands, C.P.M. (author), Ngene, I.S. (author)The transition from batch to continuous processing in fine-chemicals industries offers many advantages; among these are a high volumetric productivity, improved control over reaction conditions resulting in a higher yield and selectivity, a small footprint and a safer process due to a smaller reaction volume. Pilot studies of continuous micro...conference paper 2011
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Heerema, L.D. (author), Cakali, D. (author), Roelands, C.P.M. (author), Goetheer, E.L.V. (author), Verdoes, D. (author), Keurentjes, J. (author), TNO Industrie en Techniek (author)The applicability of aqueous solutions of Pluronics for the removal of the model product phenol was evaluated. Phenol is a chemical that can be produced by a recombinant strain of the solvent tolerant bacterium Pseudomonas putida S12. However, the growth of the micro-organisms and the phenol production is inhibited at low phenol concentrations....article 2010
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van den Berg, C. (author), Boon, F. (author), Roelands, C.P.M. (author), Bussmann, P.J.Th. (author), Goetheer, E.L.V. (author), Verdoes, D. (author), Wielen, L.A.M. (author)Most fermentation products have a feedback inhibiting effect on the host organism. In situ product recovery (ISPR) can be a means to overcome this product inhibition in fermentations. Particles such as solvent impregnated resins or capsules can be valuable tools for product recovery based on extraction. To evaluate, which kind of particle will...article 2010
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Urbanus, J. (author), Bisselink, R.J.M. (author), Nijkamp, K. (author), ter Horst, J.H. (author), Verdoes, D. (author), Roelands, C.P.M. (author)Fermentation technology is potentially sustainable for its use of renewable feedstocks. Large-scale application requires efficient downstream processing integrated with fermentation, which can be established by in situ product removal. In this field, the removal of slightly water-soluble compounds that are subject to speciation is challenging....article 2010
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Heerema, L.D. (author), Cakali, D. (author), Roelands, C.P.M. (author), Goetheer, E.L.V. (author), Verdoes, D. (author), Keurentjes, J. (author), TNO Industrie en Techniek (author)This paper evaluates the applicability of aqueous solutions of Pluronics for the removal of phenol in a separation and regeneration process. Experimental results show that Pluronic P103 micelles allow extraction of phenol from aqueous solutions at 30°C. The phenol can be released due to the transition of the Pluronic micelles into unimers with a...article 2010
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Lexmond, A.S. (author), Roelands, C.P.M. (author), de Graaff, M.P. (author), Bassett, J.M. (author), TNO Industrie en Techniek (author)The fine chemicals and pharmaceuticals industry needs to innovate to beat international competition and resolve environmental issues. Process intensification by flow chemistry is the most promising route for this change, as it can reduce raw material and energy consumption, waste production, lead time and time-to-market. However, the sheer...article 2010
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Oudshoorn, A. (author), van den Berg, C. (author), Roelands, C.P.M. (author), Straathof, A.J.J. (author), van der Wielen, L.A.M. (author), TNO Industrie en Techniek (author)Microorganisms are generally sensitive to high concentrations of products that they excrete. Such product inhibition and toxicity effects can significantly be reduced by the integration of fermentations with separation technologies to remove the products continuously. Cost-calculations are required to select the preferred integration method....article 2010
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Urbanus, J. (author), Roelands, C.P.M. (author), Verdoes, D. (author), Jansens, P.J. (author), ter Horst, J.H. (author), TNO Industrie en Techniek (author)Co-crystallization is known as a product formulation technology, but it can also be used as a tool to solve crystallization problems. Product removal by co-crystallization in fermentations is used as a showcase to demonstrate the potential of co-crystallization as a separation technique. In fermentations, the product solubility is often higher...article 2010
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