Helmholtz-Zentrum Dresden-Rossendorf

Thermodynamics of Actinides

Dr. Frank Bok


Porträt Dr. Bok, Frank; FWOA


+49 351 260 3551




THEREDA - Thermo­dynamische Referenzdatenbasis
RES³T - Rossendorf Expert System for Surface and Sorption Thermo­dynamics
ORCID: 0000-0002-6885-2619


Bautzner Landstraße 400 - 01328 Dresden

Scientific career

  • since 2011:
    Research associate at the Helmholtz-Zentrum Dresden-Rossendorf e. V. - Institute of Resource Ecology.
  • 2010:
    TU Bergakademie Freiberg - Institute for Inorganic Chemistry, Ph.D. in Inorganic Chemistry.
  • 2005-2011:
    Research Assistant at the TU Bergakademie Freiberg - Institute for Inorganic Chemistry.
  • 1998-2004:
    TU Bergakademie Freiberg, Diploma in Chemistry.

Research experience

Database development for thermodynamic and sorption chemistry

  • Development of a database (THEREDA) for the modeling of the german nuclear waste repository (see below).
  • Development of the sorption database RES³T (see below).
  • (Geo)Chemical modeling using Geochemist's Workbench / PHREEQC / PhreePlot.


Board activities

Teaching activity


  • A. Asztalos: "Untersuchungen zur Präparation und Charakterisierung niederer Hydrate von Eisen(III)-nitrat" ("Studies on the preparation and characterization of lower hydrates of iron(III) nitrate") (Diploma thesis),
    TU Bergakademie Freiberg (2010)
  • E. Hennings: "Reaktionen von organischen Halogeniden mit Alkalimetallcyanatschmelzen" ("Reactions of organic halides with alkali metal cyanate melts") (Diploma thesis),
    TU Bergakademie Freiberg (2010)
  • C. Cariven: "Long-term reactions of silicate mineral phases - implementation and application of pH-dependent dissolution rates with relevance for future nuclear waste disposals" (Master thesis),
    TU Bergakademie Freiberg (2022)
  • V. Dück: "Sorption of Radium onto natural occuring mineral phases" (Ph.D. topic)
    TU Dresden (2022+)
  • I. Iarmosh: "Radionuclide migration in the Chornobyl Exclusion Zone: ecological compartment modelling coupled to mechanistic sorption approaches (Smart-Kd)" (Ph.D. topic)
    Gottfried Wilhelm Leibniz Universität Hannover (2022+)



Natural and synthetic plagioclases: Surface charge characterization and sorption of trivalent lanthanides (Eu) and actinides (Am, Cm)

Lessing, J.; Neumann, J.; Lützenkirchen, J.; Bok, F.; Moisei-Rabung, S.; Schild, D.; Brendler, V.; Stumpf, T.; Schmidt, M.

Biostimulation of Indigenous Microbes for Uranium Bioremediation in Former U Mine Water: Multidisciplinary approach assessment

Newman Portela, A.; Krawczyk-Bärsch, E.; Lopez Fernandez, M.; Bok, F.; Kassahun, A.; Drobot, B.; Steudtner, R.; Stumpf, T.; Raff, J.; Merroun, M. L.


Formation constant of the double salt CsCl·2NaCl·2H₂O(cr)

Bok, F.

The solubility of oxygen in water and saline solutions

Bok, F.; Moog, H. C.; Brendler, V.

Application of Community Data to Surface Complexation Modeling Framework Development: Iron Oxide Protolysis

Han, S.-C.; Chang, E.; Bok, F.; Zechel, S.; Zavarin, M.

Presence of uranium(V) during uranium(VI) reduction by Desulfosporosinus hippei DSM 8344T

Hilpmann, S.; Roßberg, A.; Steudtner, R.; Drobot, B.; Hübner, R.; Bok, F.; Prieur, D.; Bauters, S.; Kvashnina, K.; Stumpf, T.; Cherkouk, A.

Related publications


A community data mining approach for surface complexation database development

Zavarin, M.; Chang, E.; Wainwright, H.; Parham, N.; Kaukuntla, R.; Zouabe, J.; Deinhart, A.; Genetti, V.; Shipman, S.; Bok, F.; Brendler, V.

New insights into U(VI) sorption onto montmorillonite from batch sorption and spectroscopic studies at increased ionic strength

Stockmann, M.; Fritsch, K.; Bok, F.; Marques Fernandes, M.; Baeyens, B.; Steudtner, R.; Müller, K.; Nebelung, C.; Brendler, V.; Stumpf, T.; Schmeide, K.


The effect of four lanthanides onto a rat kidney cell line (NRK-52E) is dependent on the composition of the cell culture medium

Heller, A.; Pisarevskaja, A.; Bölicke, N.; Barkleit, A.; Bok, F.; Wober, J.

Technetium immobilization by chukanovite and its oxidative transformation products: Neural network analysis of EXAFS spectra

Schmeide, K.; Roßberg, A.; Bok, F.; Shams Aldin Azzam, S.; Weiß, S.; Scheinost, A.

Involved research facilities

Related publications

Sorption of Europium on Diatom Biosilica as Model of a “Green” Sorbent for f-Elements

Kammerlander, K. K. K.; Köhler, L.; Huittinen, N. M.; Bok, F.; Steudtner, R.; Oschatz, C.; Vogel, M.; Stumpf, T.; Brunner, E.

A comprehensive study of the sorption mechanism and thermodynamics of f-element sorption onto K-feldspar

Neumann, J.; Brinkmann, H.; Britz, S.; Lützenkirchen, J.; Bok, F.; Stockmann, M.; Brendler, V.; Stumpf, T.; Schmidt, M.

Uranium(VI) toxicity in tobacco BY-2 cell suspension culture - a physiological study

Rajabi, F.; Jessat, J.; Garimella, J. N.; Bok, F.; Steudtner, R.; Stumpf, T.; Sachs, S.

Bioassociation of U(VI) and Eu(III) by plant (Brassica napus) suspension cell cultures – A spectroscopic investigation

Jessat, J.; Sachs, S.; Moll, H.; John, W.; Steudtner, R.; Hübner, R.; Bok, F.; Stumpf, T.

Uranium and neptunium retention mechanisms in Gallionella ferruginea / ferrihydrite systems for remediation purposes

Krawczyk-Bärsch, E.; Scheinost, A. C.; Roßberg, A.; Müller, K.; Lehrich, J.; Bok, F.; Hallbeck, L.; Schmeide, K.

Involved research facilities

Related publications


Temperature-dependent luminescence spectroscopic investigations of U(VI) complexation with the halides F- and Cl-

Demnitz, M.; Hilpmann, S.; Lösch, H.; Bok, F.; Steudtner, R.; Patzschke, M.; Stumpf, T.; Huittinen, N. M.


Thermodynamic and structural aspects of the aqueous uranium(IV) system – hydrolysis vs. sulfate complexation

Lehmann, S.; Foerstendorf, H.; Zimmermann, T.; Patzschke, M.; Bok, F.; Brendler, V.; Stumpf, T.; Steudtner, R.

Effect of four lanthanides onto the viability of two mammalian kidney cell lines

Heller, A.; Barkleit, A.; Bok, F.; Wober, J.

A spectroscopic study of trivalent cation (Cm3+ and Eu3+) sorption on monoclinic zirconia (ZrO2)

Eibl, M.; Virtanen, S.; Pischel, F.; Bok, F.; Lönnrot, S.; Shaw, S.; Huittinen, N.

Stability of U(VI) doped calcium silicate hydrate gel in repository-relevant brines studied by leaching experiments and spectroscopy

Wolter, J.-M.; Schmeide, K.; Weiss, S.; Bok, F.; Brendler, V.; Stumpf, T.


Calorimetrically determined U(VI) toxicity in Brassica napus correlates with oxidoreductase activity and U(VI) speciation

Sachs, S.; Geipel, G.; Bok, F.; Oertel, J.; Fahmy, K.

Plutonium interaction studies with the Mont Terri Opalinus Clay isolate Sporomusa sp. MT-2.99: changes in the plutonium speciation by solvent extractions.

Moll, H.; Cherkouk, A.; Bok, F.; Bernhard, G.

Batch sorption and spectroscopic speciation studies of neptunium uptake by montmorillonite and corundum

Elo, O.; Müller, K.; Ikeda-Ohno, A.; Bok, F.; Scheinost, A.; Hölttä, P.; Huittinen, N.

Involved research facilities

Related publications


NeptuniumV retention by siderite under anoxic conditions: Precipitation of NpO2–like nanoparticles and of NpIV pentacarbonate

Scheinost, A. C.; Steudtner, R.; Hübner, R.; Weiss, S.; Bok, F.

Involved research facilities

Related publications

The specific sorption of Np(V) on the corundum (α-Al2O3) surface in the presence of trivalent lanthanides Eu(III) and Gd(III): a batch sorption and XAS study

Virtanen, S.; Bok, F.; Ikeda-Ohno, A.; Rossberg, A.; Lützenkirchen, J.; Rabung, T.; Lehto, J.; Huittinen, N.

Involved research facilities

Related publications

Speciation Studies of Metals in Trace Concentrations: The Mononuclear Uranyl(VI) Hydroxo Complexes

Drobot, B.; Bauer, A.; Steudtner, R.; Tsushima, S.; Bok, F.; Patzschke, M.; Raff, J.; Brendler, V.


In situ spectroscopic identification of neptunium(V) inner-sphere complexes on the hematite-water interface

Müller, K.; Gröschel, A.; Rossberg, A.; Bok, F.; Franzen, C.; Brendler, V.; Foerstendorf, H.

Involved research facilities

Related publications

Interaction of Eu(III) with mammalian cells: Cytotoxicity, uptake and speciation as a function of Eu(III) concentration and nutrient composition

Sachs, S.; Heller, A.; Weiß, S.; Bok, F.; Bernhard, G.

Disposal of nuclear waste in host rock formations featuring high-saline solutions – Implementation of a thermodynamic reference database (THEREDA)

Moog, H. C.; Bok, F.; Marquardt, C. M.; Brendler, V.

A spectroscopic study on U(VI) biomineralization in cultivated Pseudomonas fluorescens biofilms isolated from granitic aquifers

Krawczyk-Bärsch, E.; Lütke, L.; Moll, H.; Bok, F.; Steudtner, R.; Rossberg, A.

Involved research facilities

Related publications


Interaction of U(VI) with Äspö diorite: A batch and in situ ATR FT-IR sorption study

Schmeide, K.; Gürtler, S.; Müller, K.; Steudtner, R.; Joseph, C.; Bok, F.; Brendler, V.


New iron(III) nitrate hydrates: Fe(NO3)3•xH2O with x = 4, 5 and 6

Schmidt, H.; Asztalos, A.; Bok, F.; Voigt, W.

Immobilization of uranium in biofilm microorganisms exposed to groundwater seeps over granitic rock tunnel walls in Olkiluoto, Finland

Krawczyk-Bärsch, E.; Lünsdorf, H.; Arnold, T.; Bok, F.; Steudtner, R.; Pedersen, K.; Lehtinen, A.; Brendler, V.


Method for producing nitrated aromatic compounds and mixtures thereof

Mackenroth, W., Büttner, W., Stroeffer, E., Voigt, W., Bok, F.

Patent numbers: CN102333756(A), WO2010EP52450, EP20090153699.