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Pore-volume alteration measurements to evaluate scale formation during solid–fluid interactions

Published online by Cambridge University Press:  05 July 2018

Prathap Moola ,
Bergur Sigfússon  and
Andri Stefánsson
Prathap Moola*
Affiliation:
Institute of Earth Sciences, University of Iceland, Sturlugata 7, 101 Reykjavík, Iceland Reykjavík Energy, Baejarhálsi 1, 110 Reykjavík, Iceland
Bergur Sigfússon
Affiliation:
Reykjavík Energy, Baejarhálsi 1, 110 Reykjavík, Iceland
Andri Stefánsson
Affiliation:
Institute of Earth Sciences, University of Iceland, Sturlugata 7, 101 Reykjavík, Iceland
*
* E-mail: [email protected]
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Abstract

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Pore-volume changes in porous media during water–rock interaction can be studied using hydrological tracers. The tracers used here were amino G acid, napthionic acid and fluorescein at pH 3 and 6.5 in contact with basaltic glass, quartz and rhyolite. The experimental setup mimicked that of a hydrological tracer test where a fixed volume of tracer was injected into a flow-through column and the breakthrough curve monitored. The measured breakthrough tracer curves were compared to theoretical 1-D reactive transport simulations calculated using the PHREEQC program. In some cases the tracers were observed to behave ideally, whereas in others they clearly reacted with the solid surfaces. This implies that some common hydrological tracers used in groundwater hydrology may not be suitable under all conditions as they may react with the surrounding rocks in the groundwater system.

Keywords

hydrological tracerspore-volume alterationscalewater–rock interaction.
Type
Research Article
Information
Mineralogical Magazine , Volume 78 , Issue 6 , November 2014 , pp. 1399 - 1403
Creative Commons
Creative Common License - CCCreative Common License - BY
© [2014] The Mineralogical Society of Great Britain and Ireland. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2014

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