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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    We will mail you new results for this query: keywords==electricity generators
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Improving the cathode of a microbial fuel cell for efficient electricity production
Heijne, A. ter - \ 2010
Wageningen University. Promotor(en): Cees Buisman, co-promotor(en): Bert Hamelers. - S.l. : s.n. - ISBN 9789085858218 - 165
elektriciteitsgeneratoren - biomassa - bio-energie - microbiële brandstofcellen - electricity generators - biomass - bioenergy - microbial fuel cells
The worldwide demand for energy is increasing. At the same time, energy rich wastewaters are currently purified by oxygen supply, which costs a lot of energy. The Microbial Fuel Cell is a new technology that offers advantages in both directions: it produces electricity while purifying wastewaters. This research aimed at increasing the electricity production from wastewaters in the Microbial Fuel Cell. In a Microbial Fuel Cell, microorganisms grow on an electrode, the anode. These microorganisms convert biodegradable organic components in wastewater directly into electrons (electricity). The most important limiting factor is currently the cathode, where the electrons are accepted, normally by oxygen. Oxygen is the most desired electron acceptor because of its unlimited availability and its high potential. To drive the oxygen reduction reaction at the desired rate however, a catalyst is needed. The mostly used catalyst for oxygen reduction is Pt, however, its high cost requires development of other cost-effective and renewable catalysts. We followed three strategies to improve cathode performance: the use of Fe3+/Fe2+ as a mediator at the cathode, a biocathode, in which microorganisms were used to catalyze the oxygen reduction reaction, and the reduction of Cu2+ in the presence and absence of oxygen. This last process resulted not only in higher current production, but also in recovery of pure copper. Finally, we have tested a Microbial Fuel Cell on larger scale, with a surface area of 0.5 m2 and a volume of 5 L. Contrary to other studies, we have shown that a larger-scale Microbial Fuel Cell can produce similar power and current densities compared to small lab scale systems, when the distances between the electrodes are small, the electrodes are well flowed-through, and the reaction rate at the cathode is fast. Finally, we show that there is still a factor 10 improvement in power possible, as the estimated maximum power density that can be achieved in Microbial Fuel Cells is 17.3 W/m2 or 3,460 W/m3. Compared with anaerobic digestion, this is almost 3 times as much power at a similar loading rate of 25 kg COD/m3/d. At this estimated maximum performance, the energy efficiency in a Microbial Fuel Cell will be 63%, whereas the energy efficiency in anaerobic digestion is 30%. For reaching this estimated power density, further studies should focus on the cathode as it is still the main limiting factor, leading to largest part of the energy losses in the MFC.

Ontwikkeling van de Elektriciteit Leverende Kas (ELKAS) : openbare rapportage
Sonneveld, P.J. ; Swinkels, G.L.A.M. ; Mohammadkhani, V. ; Holterman, H.J. ; Zwart, H.F. de; Bot, G.P.A. ; Janssen, H.J.J. ; Tuijl, B.A.J. van; Campen, J.B. - \ 2009
Wageningen : Wageningen UR Glastuinbouw (Rapport / Wageningen UR Glastuinbouw 236) - 43
tuinbouwbedrijven - kassen - elektrische energie - elektriciteitsgeneratoren - foto-elektrische cellen - folie - warmteopslag - zonne-energie - glastuinbouw - market gardens - greenhouses - electrical energy - electricity generators - photoelectric cells - foil - heat retention - solar energy - greenhouse horticulture
De Elektriciteit Leverende Kas of kortweg de ELKAS genoemd, levert warmte én elektriciteit. Bij de Elkas wordt elektriciteit opgewekt met teruggekaatst NIR-licht. PAR-licht komt wel in de kas en is beschikbaar voor plantengroei. In dit project is het Elkas principe uitgewerkt tot een werkend prototype waaraan daadwerkelijk elektriciteit- en warmtelevering is gemeten
Zonnige toekomst voor Elkas
Jagers op Akkerhuis, F. ; Wageningen UR Glastuinbouw, ; Sonneveld, P.J. - \ 2009
Vakblad voor de Bloemisterij 64 (2009)18. - ISSN 0042-2223 - p. 38 - 39.
tuinbouwbedrijven - kassen - elektrische energie - elektriciteitsgeneratoren - foto-elektrische cellen - folie - warmteopslag - glastuinbouw - nabij infrarood spectroscopie - market gardens - greenhouses - electrical energy - electricity generators - photoelectric cells - foil - heat retention - greenhouse horticulture - near infrared spectroscopy
Bij de Elkas wordt elektriciteit opgewekt met teruggekaatst NIR-licht. PAR-licht komt wel in de kas en is beschikbaar voor plantengroei. Aangetoond is dat deze vorm van stroomproductie werkt. Een parallelproef met rozen laat zien dat het gewas zich zonder problemen ontwikkelt onder NIR-scherm
Elkas levert gewas én stroom : kas met zonnecellen geopend in Wageningen
Vegter, B. ; Sonneveld, P.J. - \ 2008
Vakblad voor de Bloemisterij 63 (2008)26. - ISSN 0042-2223 - p. 36 - 37.
kassen - elektriciteitsgeneratoren - zonne-energie - elektriciteit - bouwtechnologie - constructie - glastuinbouw - kastechniek - greenhouses - electricity generators - solar energy - electricity - construction technology - construction - greenhouse horticulture - greenhouse technology
WUR Glastuinbouw heeft de Elkas gebouwd, die warmte en stroom kan leveren. Het gebogen glas kaatst het NIR-licht terug op zonnecellen, die elektriciteit opwekken. Het PAR-licht wordt doorgelaten voor de gewasgroei
EWICON II: de ontwikkeling van een Elektrostatische Windenergie Converter II: Openbare eindrapportage
Balendonck, J. ; Sonneveld, P.J. ; Morshuis, P.H.F. ; Bruins, M.A. - \ 2008
Wageningen : Wageningen UR Glastuinbouw (Nota / Wageningen UR Glastuinbouw 503) - 14
windenergie - elektrostatische lading - elektrische energie - elektriciteitsgeneratoren - wind power - electrostatic charging - electrical energy - electricity generators
Doel van dit project was om een converter te ontwikkelen die windenergie met behulp van elektrostatische principes direct kan omzetten in elektrische energie. Het idee hierbij is om elektrisch geladen deeltjes te laten meevoeren in de wind en vervolgens elektrostatisch af te remmen, waardoor elektrostatische energie kan worden gegenereerd.
Zinkverontreiniging van de bodem nabij hoogspanningsmasten in de 380 kV-leiding tussen Geertuidenberg en Eindhoven
Lexmond, Th.M. - \ 1983
Wageningen : Landbouwhogeschool - 31
bodemverontreiniging - zink - elektriciteitsgeneratoren - nederland - noord-brabant - soil pollution - zinc - electricity generators - netherlands
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