Daniela Soltermann
Paul Scherrer Institute
5 Papers
Daniela Soltermann is an academic researcher from Paul Scherrer Institute. The author has contributed to research in topics: Sorption & Chemistry. The author has an hindex of 5, co-authored 5 publications. Previous affiliations of Daniela Soltermann include ETH Zurich.
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Papers
Redox Properties of Structural Fe in Clay Minerals. 1. Electrochemical Quantification of Electron-Donating and -Accepting Capacities of Smectites
Christopher A. Gorski,Michael Aeschbacher,Daniela Soltermann,Daniela Soltermann,Andreas Voegelin,Andreas Voegelin,Bart Baeyens,Maria Marques Fernandes,Thomas B. Hofstetter,Thomas B. Hofstetter,Michael Sander +10 more
TL;DR: One-electron-transfer mediating compounds are used to facilitate electron transfer between structural Fe in clay minerals and a vitreous carbon working electrode in an electrochemical cell to demonstrate reliable quantification of Fe content and redox state.
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Fe(II) uptake on natural montmorillonites. I. Macroscopic and spectroscopic characterization
Daniela Soltermann,Daniela Soltermann,Maria Marques Fernandes,Bart Baeyens,Rainer Dähn,Prachi Joshi,Andreas C. Scheinost,Christopher A. Gorski +7 more
TL;DR: The results provide compelling evidence that Fe(II) uptake characteristics on clay minerals are strongly correlated to the redox properties of the structural Fe(III), and improved understanding of the interfacial redox interactions between sorbed Fe (II) and clay minerals gained in this study is essential for future studies developing Fe( II) sorption models on natural montmorillonites.
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Fe(II) Sorption on a Synthetic Montmorillonite. A Combined Macroscopic and Spectroscopic Study
Daniela Soltermann,Daniela Soltermann,Maria Marques Fernandes,Bart Baeyens,Rainer Dähn,Jocelyne Miehé-Brendlé,Bernhard Wehrli,Michael H. Bradbury +7 more
TL;DR: EXAFS data show spectroscopic differences between Fe sorbed at low and medium absorber concentrations that were chosen to be characteristic for sorption on strong and weak sites, respectively, and data analysis indicates that Fe is located in the continuity of the octahedral sheet at trans-symmetric sites.
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Fe(II) uptake on natural montmorillonites. II. Surface complexation modeling.
Daniela Soltermann,Daniela Soltermann,Bart Baeyens,Michael H. Bradbury,Maria Marques Fernandes +4 more
TL;DR: All of the sorption data could be modeled with the two-site protolysis nonelectrostatic surface complexation and cation exchange (2SPNE SC/CE) sorption model including an additional surfacecomplexation reaction for Fe(II) which involved the surface oxidation of ferrous iron surface complexes on both the strong and weak sites.
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Competitive Fe(II)-Zn(II) uptake on a synthetic montmorillonite.
Daniela Soltermann,Daniela Soltermann,Maria Marques Fernandes,Bart Baeyens,Jocelyne Miehé-Brendlé,Rainer Dähn +5 more
TL;DR: In this paper, macroscopic sorption experiments combined with surface complexation modeling and extended X-ray absorption fine structure (EXAFS) spectroscopy were applied to elucidate competitive sorption processes between divalent Fe and Zn at the clay mineral-water interface.
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