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Apeldoorn, Netherlands

Chilamkurthi S.,Technical University of Delft | Willemsen J.-H.,Technical University of Delft | van der Wielen L.A.M.,Technical University of Delft | Poiesz E.,Cosun Food Technology Center | Ottens M.,Technical University of Delft
Journal of Chromatography A | Year: 2012

Adsorption equilibria of the saccharides d-glucose, d-galactose, l-arabinose, lactose and a sugar acid were measured on gel-type sulfonated poly (styrene-co-divinylbenzene) strong cation exchange resins in a high-throughput (HT) 96-well plate batch uptake mode using a pipetting robot at 25°C. Four different ionic forms, Ca 2+, K +, Na +, and H + were used. Single component adsorption isotherms were determined in a concentration range of 10-240mgml -1. Multicomponent experiments were performed to investigate competitive adsorption in a concentration range of 10-120mgml -1. A qualitative investigation on competitive and cooperative effects was performed. All sugar isotherms showed a linear behavior except for the sugar acid which showed an unfavorable (anti-Langmuir) behavior in the high concentration ranges. Selectivity values were determined from the binary mixture partition coefficient (K) values of each component. This HT 96-well plate batch uptake method proves to be less laborious and consumes less time and material compared to the frontal analysis and adsorption-desorption methods where column experimentation is used. Ternary mixture separation of arabinose and the sugar acid from glucose showed K + and Ca 2+ loaded resins having the best selectivity (DIAION Ca 2+ 2.01 and 1.78 for l-arabinose/d-glucose and sugar acid/l-arabinose respectively), similarly Purolite K + loaded resin for the lactose separation from glucose and galactose (1.17 for lactose/d-glucose). Column experiments were performed to validate the batch uptake experiments. The static binding results could easily be translated to the column experiments with good agreement. Finally, adding to the validity of the approach, binary and ternary fixed-bed experiments were well described by a dynamic mathematical chromatographic model using the parameters obtained from the binary-component isotherm data. © 2012 Elsevier B.V.. Source

Silva V.,Institute for Sustainable Process Technology | Poiesz E.,Cosun Food Technology Center | Van Der Heijden P.,Paques BV
Journal of Applied Electrochemistry | Year: 2013

Industrial processes usually generate streams enriched with high organic and inorganic components. Due to the complexity of these streams sometimes it is not quite straightforward to predict the performance of desalination technologies. Some technologies are available for the selective removal of salts from aqueous stream, but in general these technologies are applied in high value applications where salts are either the product or limit further purification of the final product is required. These technologies are, however, not widely used in low value applications like wastewater treatment. The aim of this article is to review, improve and perform the design of electrodialysis processes for relevant industrial wastewater applications. It is focused on the determination of the critical design parameters like membrane resistance, current efficiency and limiting current density through lab scale experiments and its further use for industrial scale first approximation design. In this article, the basic equations for design are reviewed and a practical approach to obtain the number of stacks required for a certain separation is introduced. An industrial wastewater stream has been used for lab batch experiment and its following continuous plant design. The results show that it is possible to separate monovalent ions in a high rate (more than 70 %) and divalent ions were less separated (less than 50 %). The energy required for the particular case was evaluated in a range from 6 to 11 kWh/m3 of feed stream depending on the water reclamation rate. © 2013 Springer Science+Business Media Dordrecht. Source

Kiskini A.,TU Eindhoven | Zondervan E.,University of Bremen | Wierenga P.A.,Wageningen University | Poiesz E.,Cosun Food Technology Center | Gruppen H.,Wageningen University
Computers and Chemical Engineering | Year: 2016

The design of a biorefining process is challenging due to the high number of products that can be obtained from one feedstock, and the fact that some products can be negatively affected by processing conditions that are essential for other products. To facilitate this design, we propose the use of the product driven process synthesis methodology, with some adaptations. Four novel steps were introduced: (1) decomposition of the feedstock into its main compound classes, (2) identification of the potential uses of the compound classes found in the feedstock, based on the functionalities that they can deliver, (3) selection of the product-targets by evaluating their economic potential, and (4) identification of "critical tasks", i.e., tasks that negatively affect the quantity and/or quality of each product during their separation. To illustrate how this new approach can be used in practice, a case study of a sugar beet leaves biorefinery is presented. © 2016 Elsevier Ltd. Source

Vogt L.M.,University of Groningen | Meyer D.,Sensus Inc. | Pullens G.,Cosun Food Technology Center | Faas M.M.,University of Groningen | And 4 more authors.
Journal of Nutrition | Year: 2014

Dietary fiber intake is associated with lower incidence and mortality from disease, but the underlying mechanisms of these protective effects are unclear.We hypothesized that β2→1-fructan dietary fibers confer protection on intestinal epithelial cell barrier function via Toll-like receptor 2 (TLR2), and we studied whether β2→1-fructan chain-length differences affect this process. T84 human intestinal epithelial cell monolayers were incubated with 4 β2→1-fructan formulations of different chain-length compositions and were stimulated with the proinflammatory phorbol 12-myristate 13-acetate (PMA). Transepithelial electrical resistance (TEER) was analyzed by electric cell substrate impedance sensing (ECIS) as a measure for tight junction-mediated barrier function. To confirm TLR2 involvement in barrier modulation by β2→1-fructans, ECIS experiments were repeated using TLR2 blocking antibody. After preincubation of T84 cells with short-chain β2→1-fructans, the decrease in TEER as induced by PMA (62.3 ± 5.2%, P < 0.001) was strongly attenuated (15.2 ± 8.8%, P < 0.01). However, when PMA was applied first, no effect on recovery was observed during addition of the fructans. By blocking TLR2 on the T84 cells, the protective effect of short-chain β2→1-fructans was substantially inhibited. Stimulation of human embryonic kidney human TLR2 reporter cells with β2→1-fructans induced activation of nuclear factor kappa-light-chain-enhancer of activated B cells, confirming that β2→1-fructans are specific ligands for TLR2. To conclude, β2→1-fructans exert time-dependent and chain length-dependent protective effects on the T84 intestinal epithelial cell barrier mediated via TLR2. These results suggest that TLR2 located on intestinal epithelial cells could be a target of β2→1-fructan-mediated health effects. © 2014 American Society for Nutrition. Source

Struijs J.L.M.,Cosun Food Technology Center
Zuckerindustrie | Year: 2012

Beet growing - evolution of campaign - turbine damage - pulp drying - evaporation - biogas - thick juice storage - investments - beet price - carbonatation lime - beet crown - invert sugar content - biopolymers - Nieuw Prinsenland. Source

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