Experimental determination of hydrogen isotope exchange rates between methane and water under hydrothermal conditions

Autor: Andrew C. Turner, Nicholas J. Pester, Markus Bill, Mark E. Conrad, Kevin G. Knauss, Daniel A. Stolper

The hydrogen isotopic composition of methane (CH4) is used as a fingerprint of gas origins. Exchange of hydrogen isotopes between CH4 and liquid water has been proposed to occur in both low- and high-temperature settings. However, despite environment

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70e5f42eb4d874b21157876842661971
https://escholarship.org/uc/item/5w70c2v8

Kinetics of D/H isotope fractionation between molecular hydrogen and water

Autor: Kevin G. Knauss, Nicholas J. Pester, Donald J. DePaolo, Mark E. Conrad

Publikováno v: Geochimica et Cosmochimica Acta. 242:191-212

At equilibrium, the D/H isotope fractionation factor between H2 and H2O (αH2O-H2(eq)) is a sensitive indicator of temperature, and has been used as a geothermometer for natural springs and gas discharges. However, δDH2 measured in spring waters may

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::951f62d4add91c06fe735362f28353c9
https://doi.org/10.1016/j.gca.2018.09.015

Experimental Study of Dissolution Kinetics of K-feldspar as a Function of Crystal Structure Anisotropy under Hydrothermal Conditions

Autor: Bertrand Fritz, Bastien Wild, Giuseppe D. Saldi, Marion Pollet-Villard, Kevin G. Knauss, Damien Daval, Philippe Ackerer

Publikováno v: Procedia Earth and Planetary Science
Procedia Earth and Planetary Science, Elsevier, 2017, 17, pp.165-168. ⟨10.1016/j.proeps.2016.12.042⟩

We present the results of an experimental study of the effect of anisotropy on the kinetics of K-Feldspar dissolution under hydrothermal conditions as encountered in the Soultz-sous-Forets enhanced geothermal system. We try to quantify the impact of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::423c782231d4b5f76a12d05d977b6017

Corrosion of carbon steel and the passivating properties of corrosion films formed under high-PT geothermal conditions

Autor: Thomas M. Devine, Kevin G. Knauss, Robert Wonneberger, Niklas Mundhenk, Siva R.S. Bandaru

Publikováno v: Mundhenk, Niklas; Knauss, Kevin G; Bandaru, Siva RS; Wonneberger, Robert; & Devine, Thomas M. (2019). Corrosion of carbon steel and the passivating properties of corrosion films formed under high-PT geothermal conditions.. The Science of the total environment, 677, 307-314. doi: 10.1016/j.scitotenv.2019.04.386. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/2794t472

Corrosion is a major obstacle to a safe implementation of geotechnical applications. Using a novel approach that includes vertical scanning interferometry (VSI) and electrochemical impedance spectroscopy (EIS) we discuss time-dependent carbon steel c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b78d0e2b88c84e7d0d61556ea888f5b4
https://pubmed.ncbi.nlm.nih.gov/31059874

Does crystallographic anisotropy prevent the conventional treatment of aqueous mineral reactivity? A case study based on K-feldspar dissolution kinetics

Autor: Bertrand Fritz, Marion Pollet-Villard, Bastien Wild, Kevin G. Knauss, Philippe Ackerer, Damien Daval, Giuseppe D. Saldi

Publikováno v: Geochimica et Cosmochimica Acta. 190:294-308

Which conceptual framework should be preferred to develop mineral dissolution rate laws, and how the aqueous mineral reactivity should be measured? For over 30 years, the classical strategy to model solid dissolution over large space and time scales

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e41630ccce7d802ea6db3b215d6e4a2b
https://doi.org/10.1016/j.gca.2016.07.007