Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Removal of polar organic micropollutants by pilot-scale reverse osmosis drinking water treatment
Albergamo, Vittorio ; Blankert, Bastiaan ; Cornelissen, Emile R. ; Hofs, Bas ; Knibbe, Willem Jan ; Meer, Walter van der; Voogt, Pim de - \ 2019
Water Research (2019). - ISSN 0043-1354 - p. 535 - 545.
Drinking water treatment - Polar micropollutants (MPs) - Reverse osmosis (RO)

The robustness of reverse osmosis (RO) against polar organic micropollutants (MPs) was investigated in pilot-scale drinking water treatment. Experiments were carried in hypoxic conditions to treat a raw anaerobic riverbank filtrate spiked with a mixture of thirty model compounds. The chemicals were selected from scientific literature data based on their relevance for the quality of freshwater systems, RO permeate and drinking water. MPs passage and the influence of permeate flux were evaluated with a typical low-pressure RO membrane and quantified by liquid chromatography coupled to high-resolution mass spectrometry. A strong inverse correlation between size and passage of neutral hydrophilic compounds was observed. This correlation was weaker for moderately hydrophobic MPs. Anionic MPs displayed nearly no passage due to electrostatic repulsion with the negatively charged membrane surface, whereas breakthrough of small cationic MPs could be observed. The passage figures observed for the investigated set of MPs ranged from less than 1%–25%. Statistical analysis was performed to evaluate the relationship between physicochemical properties and passage. The effects of permeate flux were more pronounced for small neutral MPs, which displayed a higher passage after a pressure drop.

Micro nutrient fertilisation in greenhouse horticulture and its effectiveness to crops.
Voogt, Wim - \ 2018
Effecten van Na bij tomaat recirculatie Onderzoeksresultaten 2017
Voogt, Wim - \ 2018
Bodemvochtgehalte sensoren voor watermanagement in grondteelten : Onderzoek naar de mogelijkheid om via bodemvochtsensoren onder de bewortelde zone uitspoeling te kunnen meten of te signaleren
Voogt, W. ; Balendonck, J. ; Winkel, A. van - \ 2018
Bleiswijk : Wageningen Plant Research, Business unit Glastuinbouw (Rapport WPR 715) - 44 p.
Onderzoek is gedaan naar de toepassing van vochtsensoren in het watermanagement bij grondgebonden teelten, met name om uitspoeling te kunnen signaleren en te voorkomen. Voor de toepassing is de DACOM Sensetion, met sensoren op 15, 20 en een diepe sensor op 60 cm gekozen. Het meetsignaal bleek niet direct bruikbaar, hiervoor is een kalibratiemethode ontwikkeld. Bij de praktijktesten bij diverse teelten bleek dat een patroon van water alleen in de bovenste twee sensoren kon worden gevolgd. De diep sensor bleek ongevoelig voor veranderingen, ook niet als er werkelijk uitspoeling werd gemeten in situaties waar een lysimeter aanwezigwas.
Salinity management in soilless systems. The effects of the Na concentration.
Voogt, Wim - \ 2018
Fertigation management in Dutch soilgrown greenhouse crops
Voogt, Wim - \ 2018
Technology transfer of fertigation. The Dutch experience .
Voogt, Wim - \ 2018
Can the Lysimeter be a useful tool in irrigation management? Evaluation of the practical lysimeter as tool for irrigation tuned to crop demand for soil-grown greenhouse cut-flower crops.
Voogt, Wim - \ 2018
Effect of rootstock, roots and cropping stage on Na uptake of rose and sweet pepper
Voogt, Wim - \ 2018
Effect of N concentrations and N-form on yield and fruit quality of soil-less grown fruit-vegetables.
Voogt, Wim - \ 2018
New Farming & Agriculture Technologies and Consumer Behaviour
Voogt, Wim - \ 2018
Astaxanthine 2.0 : hoogwaardige inhoudsstoffen uit algen in kassen
Boer, Lex de; Bos, Jelle van den; Graman, Wim ; Hazewinkel, Sander ; Hemming, Silke ; Kerkhof, Gerwien ; Lans, Cees van der; Luijendijk, Teus ; Prins, Robert ; Roebroek, Eurgene ; Ruijven, Jim van; Streminska, Marta ; Ven, Joost van de; Vermeer, Chris ; Voogt, Wim ; Wisse, Wilko - \ 2018
Bleiswijk : Wageningen Plant Research, Business unit Glastuinbouw (Wageningen Plant Research, Business unit Glastuinbouw rapport WPR 807) - 86
Het doel van dit project was de realisatie van een proof-of-principle keten voor de productie van astaxanthine als oleoresin uit de alg Haematococcus pluvialis in fotobioreactoren in Nederlandse kassen. Astaxanthine is een sterk antioxidant dat bij kan dragen aan een gezonde voeding voor consumenten. Astaxanthine kan in Nederlandse kassen duurzaam worden geproduceerd (kassen als zonnecollector, gebruik afval CO2 uit industrie, reinigen afvalwater). Binnen dit project is onderzoek verricht naar de selectie van natuurlijke algenstammen op kasniveau, klassieke stamverbetering op labniveau (uitgangsmateriaal), procesverbetering in alle fases van de productie (voorkweek, opkweek, groene fase, rode fase) door optimalisatie teeltfactoren en hygiënisatie (teelt en productie) en het maken van een proof-of-principle eindproduct (eindformulering) volgens marktspecificatie (markt en economie). Met het project is kennis vergaard om een nieuw verdienmodel voor de productie van een hoogwaardige stof (astaxanthine) in de tuinbouw te realiseren. Er is een proof-of-principle van een economisch rendabele productieketen van uitgangsmateriaal over productie tot product eindformulering volgens specificaties van de markt aangetoond voor de productie van astaxanthine uit Haematococcus pluvialis.---The aim of this project was the realization of a proof-of-principle value chain for the production of astaxanthin as oleoresin from the algae Haematococcus pluvialis in photobioreactors in Dutch greenhouses. Astaxanthin is a strong antioxidant that can contribute to a healthy diet for consumers. Astaxanthin can be produced sustainably in Dutch greenhouses (greenhouses as solar collectors, usage of waste CO2 from industry, cleaning and recycling of waste water). Within this project, research was carried out into the selection of natural algae strains at the greenhouse level, classical strain improvement at lab level (starting material), process improvement at all stages of production, from pre-cultivation, cultivation, green phas and red phase, by the optimization of all cultivation factors and sanitation (growth and production) and designing a proof-of-principle end product (formulation) according to market specification (market and economy). With the project, knowledge has been gathered to realize a new revenue model for the production of a high-quality substance (astaxanthin) in horticulture. A proof-of-principle of an economically viable production chain of starting material from production to product final formulation according to market specifications has been demonstrated for the production of astaxanthin from Haematococcus pluvialis.
Grenswaarden Na in tomaat en paprika hoger dan gedacht
Voogt, W. - \ 2018
Onder Glas 15 (2018)9. - p. 37 - 37.
Split-root system harvests sodium and removes it via the crop: Growing with higher sodium concentration looks possible
Voogt, Wim - \ 2018
Kwelbeperkende maatregel grondgebonden teelt
Voogt, W. - \ 2018
Onder Glas 15 (2018)1. - p. 57 - 57.
Valorizing nutrients from palm oil mill effluent (Pome) digestate
Voogt, Juliën ; Elbersen, Wolter ; Meesters, Koen ; Blankenborg, Stefan ; Langeveld, Hans ; Quist-Wessel, Foluke - \ 2018
In: 26th European Biomass Conference and Exhibition Proceedings. - Florence : ETA-Florence Renewable Energies (European Biomass Conference and Exhibition Proceedings ) - ISBN 9788889407189 - p. 72 - 76.
Circular economy - Digestate - Economics - Palm oil - Recycling - Technology

Palm Oil Mill Effluent (POME) is considered a problematic waste, causing pollution problems: greenhouse gas emissions, water pollution with organic material, and nutrient pollution. POME is well suited for treatment in digestion tanks, generating methane for energy production. A technology screening showed membrane technology as the most promising technology for further processing of POME digestate into a mineral concentrate and high quality water. However, a techno-economic evaluation showed that the estimated costs related to further processing of POME digestate are currently higher than the potential savings. Options for cost reduction of the membrane technology and of the handling of the mineral concentrate should be explored. In an optimistic scenario the potential savings exceed the costs. If the concept is further developed, processing of POME digestate can contribute to the economic viability of digestion systems and to reducing the environmental impact of palm oil mills.

Onderstam speelt minimale rol bij voedingsopname tomatengewas: resultaten meenemen in nieuw bemestingsadviesmodel
Voogt, Wim - \ 2018
Water mobility during drying of hard and soft type latex : Systematic GARField 1H NMR relaxometry studies
Voogt, Benjamin ; Huinink, Henk ; Erich, Bart ; Scheerder, Jurgen ; Venema, Paul ; Adan, Olaf - \ 2018
Progress in Organic Coatings 123 (2018). - ISSN 0300-9440 - p. 111 - 119.
GARField H NMR - Latex drying - Relaxometry - T - Water mobility

GARField 1H NMR relaxometry experiments were done to study the drying process of two latices with different polymer Tg and to elucidate water mobility behavior during this process. It was found that the hard type latex, with a polymer Tg above room temperature, dries faster than the soft type latex, with a polymer Tg below room temperature. Diffusion measurements by means of echo time variations at different moments in the drying process show that water auto-diffusion decreases with increasing solid content of the latex independent of particle Tg. Two pools of protons with different mobilities were observed based on transversal relaxation T2. Determination of the long T2,long's and short T2,short's of both latex dispersions and their respective proton densities during drying at 80% RH showed evidence of particle deformation for the soft type latex and the absence thereof for the hard type latex. Additional drying of the resulting coatings with anhydrous CaCl2 showed a higher porosity for the hard type coating based on the proton distribution profile width. Moreover, two domains with different polymer proton mobilities are found for both coatings that are both plasticized by water at 80% RH. This is more apparent for the hard type coating, suggesting that a more hydrophilic polymer gives a higher degree of plasticization.

Nieuwe blik op voedingsopname tomaat
Voogt, W. - \ 2018
Kas Magazine / TuinbouwCommunicatie 2018 (2018)1. - ISSN 1878-8408 - p. 56 - 60.
In de jaren negentig is het recept voor de voeding bij tomaat in recirculatie ontwikkeld. Inmiddels zijn we ruim 25 jaar verder. De teelt heeft een enorme ontwikkeling doorgemaakt; tijd om de voeding bij tomaat tegen het licht te houden.
Split-rootsysteem oogst natrium uit systeem en voert af met gewas: telen bij hoger natriumgehalte lijkt mogelijk
Voogt, Wim - \ 2018
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