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  • Articles  (7)
  • English  (7)
  • German
  • 2010-2014  (7)
  • 1
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    Quantitative and qualitative effects of a forced resource efficiency strategy : summary report of task 5 within the framework of the "Material efficiency and resource conservation" (MaRess) project (2010)
    Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie | Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie
    Details
    Publication Date: 2022-02-18
    Keywords: ddc:320
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: workingpaper , doc-type:workingPaper
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  • 2
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    AIDA – From Airborne Data Inversion to In-Depth Analysis (2011)
    In:  GEOTECHNOLOGIEN Science Report
    Details
    Publication Date: 2020-02-12
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 3
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    Helicopter-borne electromagnetics (HEM) at the Elbe estuary in Northern Germany (2011)
    In:  Protokoll über das 24. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung
    Details
    Publication Date: 2020-02-12
    Description: Helicopter-borne electromagnetic investigations provide a high potential for a comprehensive mapping of the upper hundred metres of the subsurface. The relevance for hydrogeological questions is given by the determination of resistivity models for revealing the distribution of sandy and clayey as well as saltwater and freshwater saturated sediments. The survey area to the north-west of the City of Hamburg covers the estuary of the Elbe river. Here, the aquifers and their potential salinization were intended to be mapped. Parts of the results of this survey area are involved in the project KLIMZUG-NORD, in which the Technical University Hamburg-Harburg investigates the environmental effects of climate change on the estuary of the Elbe river. Due to current climate change scenarios a sea level rise in the North-Sea region is predicted and, consequently, the water level of the Elbe river will rise in an area affected by a changing sea level. That entails an intrusion of brackish water into the surrounding freshwater aquifers. Such scenarios are investigated by hydraulic flow models. Existing geological information will be complemented spatially by electrical resistivity models derived from HEM data to a geological structural model. This will be related to hydrological parameters and should therefore serve as a base for a hydraulic modelling.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 4
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    SURFTRAP - Development and Optimisation of a Process to Biosynthesize Reactive Iron Mineral Surfaces for Water Treatment Purposes (2010)
    In:  GEOTECHNOLOGIEN Science Report
    Details
    Publication Date: 2020-02-12
    Description: In this project we aim to develop a low-cost technology to remove ionic constituents from raw waters such as arsenic species. The proposed technology is based on the reactivity of schwertmannite, an oxyhydroxosulfate of the mean stochiometry Fe8O8(OH)6SO4 (molar mass 772.89 g/mol). This mineral typically forms in acidic and sulfate rich mine waters as a secondary mineral upon oxidation of Fe(II) in a biologically mediated process. Schwertmannite can be generated in a biotechnological process after aeration of mining process waters. It forms surface-rich aggregates of needle-like nanocrystals. It rapidly transforms into ferric hydroxides of high specific surface area once exposed to water containing at least some alkalinity. Our rationale follows the concept to make use of this transformation reaction by adding biosynthesized schwertmannite to contaminated raw waters where it generates a large sorption capacity to remove the pollutants (Peiffer et al., 2008).
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 5
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    Tomographic Methods in Hydrogeology (2011)
    In:  GEOTECHNOLOGIEN Science Report
    Details
    Publication Date: 2020-02-12
    Description: The extraction of groundwater for drinking water purposes is one of the most important uses of the natural subsurface. Sustainable management of groundwater resources requires detailed knowledge of the hydraulic properties of the subsurface. Typically, these properties are not directly accessible. We are convinced that the evaluation of hydraulic properties necessitates applying hydraulic stimuli (e.g., injection and extraction of groundwater, tracer tests, etc.). In this context, tomographic assemblies and inversion strategies originally derived for geophysical surveying and meteorological data assimilation can be transferred to hydraulic applications. In addition, time-lapse geophysical surveying techniques may be used to monitor hydraulic tests. The latter requires fully coupled hydrogeophysical inversion strategies, accounting for the entire process chain from hydraulic properties via flow and transport to the geophysical surveying program. The current project includes: (1) the development of a geostatistical inversion method for transient tomographic data of multiple hydraulic investigation techniques including the geoelectrical monitoring of salt-tracer experiments using the 4-D variational approach, (2) the comparison of this method to the inversion of temporal moments, (3) the model-based optimal design of tomographic surveys, (4) the development of modular assessment equipment for efficient execution of tomographic surveys in a hydrogeological context, (5) the performance of tomographic field tests at the research site Lauswiesen in Tübingen using the model-based design and providing data for the inversion.
    Language: English
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  • 6
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    Macroeconomic modelling of sustainable development and the links between the economy and the environment : final report (2012)
    Osnabrück : Ges. für Wirtschaftliche Strukturforschung | Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie
    Details
    Publication Date: 2018-11-19
    Keywords: ddc:600
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: report , doc-type:report
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  • 7
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    Taxing construction minerals : a contribution to a resource-efficient Europe (2012)
    Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie
    Details
    Publication Date: 2022-02-18
    Description: This paper focuses on market incentives by the introduction of a construction minerals tax as an example of a resource tax. Currently, various European countries levy taxes or duties on primary construction materials, but a harmonisation of the taxation is not planned. Provided the tax rate has a perceptible price effect, the taxation of a resource can foster a demand management or the reduction of the raw material consumption and the governance of side and secondary effects. A construction minerals tax can target the stimulation of demand for secondary raw materials and recycled products, and - because the reuse of construction and demolition waste has technical limits - a stronger emphasis on the conservation of buildings and infrastructures. This has positive effects on the environment and the innovation efforts and it helps to internalise externalities. Germany, used as a case study in this paper, does not raise any taxes on other raw materials than energy sources at the federal level. For this reason, potential impacts of the introduction of a construction minerals tax will be explored and the results of a simulation will be provided.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: article , doc-type:article
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