Transport of micronutrients (iron, cobalt, nickel, etc.) within biofilms matrixes such as methanogenic granules is of high importance, because these are either essential or toxic for the microorganisms living inside the biofilm. The present study demonstrates quantitative measurements of metal transport inside these biofilms using T1 weighted 3D RARE. It is shown that iron(II)-EDTA diffusion within the granule is independent of direction or the inner structure of the granules. Assuming position dependence of the spin-lattice relaxivity, Fick’s law for diffusion in a sphere can be applied to simulate the diffusion within the methanogenic granules under investigation. A relatively low diffusion coefficient of 2.5*10-11 m2·s-1 was
obtained for iron diffusion within the methanogenic granule.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa.de:bsz:15-qucosa-192445 |
| Date | 18 December 2015 |
| Creators | Vergeldt, Frank, Bartacek, Jan, Gerkema, Edo, Osuma, Bego, Philippi, John, Lens, Piet, Van As, Henk |
| Contributors | Wageningen University, Lab. of Biophysics and Wageningen NMR Centre, Wageningen University, Sub-dept. of Environmental Technology, University of Basque, Chemical and Environmental Engineering Dept, UNESCO-IHE, Pollution Prevention and Control core, Universität Leipzig, Fakultät für Physik und Geowissenschaften |
| Publisher | Universitätsbibliothek Leipzig |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:article |
| Format | application/pdf |
| Source | Diffusion fundamentals 10 (2009) 31, S. 1-4 |
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