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000907312 037__ $$aFZJ-2022-01955
000907312 1001_ $$0P:(DE-Juel1)172900$$aIzumoto, Satoshi$$b0$$eCorresponding author
000907312 245__ $$aSpectral induced polarization of calcite precipitation in porous media$$f- 2021-02-12
000907312 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2022
000907312 300__ $$axviii, 106
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000907312 4900_ $$aSchriften des Forschungszentrums Jülich Reihe Energie & Umwelt / Energy & Environment$$v569
000907312 502__ $$aDissertation, Univ. Stuttgart, 2021$$bDissertation$$cUniv. Stuttgart$$d2021
000907312 520__ $$aPrecipitation and dissolution dynamics of calcite in response to variations in groundwater pH andalkalinity are important in a range of subsurface engineering applications. In the context of geotechnicalengineering and subsurface remediation applications, induced calcite precipitation is widely used. Theeffectiveness of induced calcite precipitation is typically investigated by measuring hydraulic pressure,analysing biochemical properties of sampled solution, and cone penetration tests. However, thesemethods are spatially and temporally limited, expensive and laborious. Geophysical methods havepotential to overcome these limitations. In particular, Spectral Induced Polarization (SIP) measurementshave been shown to be sensitive to calcite precipitation. However, previous experimental studiesshowed inconsistent SIP responses and have not explored what controls the SIP response of calcite. Inthis context, the overall aim of this thesis was to better understand how spatially variable and temporallydynamic calcite precipitation processes affect the SIP response.In a first step, the effect of solute concentration on the SIP response of calcite precipitation wasinvestigated by a four-phase experiment with SIP measurements on a column filled with sand. In phaseI, Na2CO3 and CaCl2 solutions were co-injected, which resulted in a calcite precipitation front thatincreased the imaginary part of the electrical conductivity (
000907312 536__ $$0G:(DE-HGF)POF4-2173$$a2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)$$cPOF4-217$$fPOF IV$$x0
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000907312 9141_ $$y2022
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