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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Record number 441252
Title Impact of Wire Geometry in Energy Extraction from Salinity Differences Using Capacitive Technology
Author(s) Sales, B.B.; Burheim, O.S.; Liu, F.; Schaetzle, O.; Buisman, C.J.N.; Hamelers, H.V.M.
Source Environmental Science and Technology 46 (2012)21. - ISSN 0013-936X - p. 12203 - 12208.
Department(s) Product Design and Quality Management Group
Sub-department of Environmental Technology
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) pressure retarded osmosis - reverse electrodialysis - water desalination - renewable energy - power production - river water - electrodes - sea - deionization - gradients
Abstract Energy extraction based on capacitive Donnan potential (CDP) is a recently suggested technique for sustainable power generation. CDP combines the use of ion-exchange membranes and porous carbon electrodes to convert the Gibbs free energy of mixing sea and river water into electric work. The electrodes geometry has a relevant impact on internal resistance and overall performance in CDP. In this work, we present the first effort to use wire shaped electrodes and its suitability for improving CDP. Analytical evaluation and electrical measurements confirm a strong nonlinear decrease in internal resistance for distances between electrodes smaller than 3 mm. We also demonstrated that we get more power per material invested when compared to traditional flat plate designs. These findings show the advantages of this design for further development of CDP into a mature technology.
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