Quantitative NME microscopy of iron transport in methanogenic aggregates

F.J. Vergeldt, J. Bartacek, E. Gerkema, B. Osuma, J.G.M. Philippi, P. Lens, H. van As

Research output: Contribution to journalComment/Letter to the editorAcademic

Abstract

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
Original languageEnglish
Pages (from-to)31.1-31.4
JournalDiffusion Fundamentals
Volume10
Publication statusPublished - 2009

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biofilms
microscopy
iron
ethylenediaminetetraacetic acids
microorganisms
cobalt
diffusion coefficient
nickel
matrices
metals

Cite this

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title = "Quantitative NME microscopy of iron transport in methanogenic aggregates",
abstract = "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",
author = "F.J. Vergeldt and J. Bartacek and E. Gerkema and B. Osuma and J.G.M. Philippi and P. Lens and {van As}, H.",
year = "2009",
language = "English",
volume = "10",
pages = "31.1--31.4",
journal = "Diffusion Fundamentals",
issn = "1862-4138",

}

Quantitative NME microscopy of iron transport in methanogenic aggregates. / Vergeldt, F.J.; Bartacek, J.; Gerkema, E.; Osuma, B.; Philippi, J.G.M.; Lens, P.; van As, H.

In: Diffusion Fundamentals, Vol. 10, 2009, p. 31.1-31.4.

Research output: Contribution to journalComment/Letter to the editorAcademic

TY - JOUR

T1 - Quantitative NME microscopy of iron transport in methanogenic aggregates

AU - Vergeldt, F.J.

AU - Bartacek, J.

AU - Gerkema, E.

AU - Osuma, B.

AU - Philippi, J.G.M.

AU - Lens, P.

AU - van As, H.

PY - 2009

Y1 - 2009

N2 - 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

AB - 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

M3 - Comment/Letter to the editor

VL - 10

SP - 31.1-31.4

JO - Diffusion Fundamentals

JF - Diffusion Fundamentals

SN - 1862-4138

ER -