Tailor-made polymer tracers reveal the role of clay minerals on colloidal transport in carbonate media
PEG adsorption and transport was dependent on the availability of clay mineral surfaces and carbonate dissolution dynamics. In addition, PEG adsorption featured adsorption-desorption hysteresis which retained PEG mass on clay mineral surfaces. This resulted in different PEG transport for experiments conducted consecutively in the same porous medium. As such, PEG transport was reconstructed with a continuum-scale model parametrized by a Langmuir-type isotherm including hysteresis. Thus, we quantified the influence of exposed clay mineral surfaces on the transport of organic colloids in carbonate media. This renders PEG a suitable model colloid tracer for the assessment of clay surface exposition in porous media.
Authors
- Nimo Kwarkye (ORCID: https://orcid.org/0009-0000-7530-3768)
- Thomas Ritschel (ORCID: https://orcid.org/0000-0002-9922-1107)
- Jürgen Vitz (ORCID: https://orcid.org/0000-0001-8640-4898)
- Ulrich S. Schubert (ORCID: https://orcid.org/0000-0003-4978-4670)
- Ivo Nischang (ORCID: https://orcid.org/0000-0001-6182-5215)
- Kai Uwe Totsche
- Elisabeth Lehmann
Institutions
- Helmholtz Institute Jena (DE)
- Helmholtz-Zentrum Berlin für Materialien und Energie (DE)
- Friedrich Schiller University Jena (DE)
Publication Details
- Journal
- Journal of Colloid and Interface Science
- Published
- 2024-09-03
- DOI
- https://doi.org/10.1016/j.jcis.2024.08.257
- Citations
- 4
- Primary Topic
- Groundwater flow and contamination studies
- Type
- article
- Field-Weighted Citation Impact
- 0.82
Funders
- Friedrich-Schiller-Universität Jena
- Deutsche Forschungsgemeinschaft
- Thüringer Ministerium für Wirtschaft, Arbeit und Technologie
- Thüringer Ministerium für Wirtschaft, Wissenschaft und Digitale Gesellschaft