International Workshop on Approaches for Upscaling Processes Affecting Radionuclide Transport Through the Subsurface - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook International Workshop on Approaches for Upscaling Processes Affecting Radionuclide Transport Through the Subsurface write by . This book was released on 2000. International Workshop on Approaches for Upscaling Processes Affecting Radionuclide Transport Through the Subsurface available in PDF, EPUB and Kindle.
Upscaling Subsurface Reactive Transport with the Lamella Approach
Upscaling Subsurface Reactive Transport with the Lamella Approach - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Upscaling Subsurface Reactive Transport with the Lamella Approach write by Ahmed Ali Mahmoud Ali. This book was released on 2016. Upscaling Subsurface Reactive Transport with the Lamella Approach available in PDF, EPUB and Kindle. Upscaling mixing-limited reactions is one of the ongoing problems in in-situ reactive transport within the groundwater due to the intrinsic challenges in characterizing such reactions. Previous techniques did not completely solve it; the classic macrodispersion (Eulerian) model overestimates the mixing and hence the reaction zone, while the Lagrangian particle tracking does not introduce a straightforward approach to evaluate the mixing zone extent, and also the streamtube technique does not capture the actual mixing zone and ignores the intra-tube mixing. The lamella approach is a new tool that overcomes the abovementioned shortcomings by decoupling the transport and reactions within a Lagrangian frame of reference tracking the reaction front only. The approach depends on dividing the mixing front (between displacing-displaced solutions) into approximately linear patches (lamellae, in 2-D) on which the mixing-limited reactions take place and are characterized in terms of transport impacts and reactions on them. Here the approach is applied to the 2-D radial flow for testing the equilibrium reaction network and the kinetic bimolecular reaction cases, also applied to the fractal radial domain to test the bimolecular equilibrium reaction. The theoretical reaction rate found via the simplified lamella approach is compared with explicit simulation using a finite elements (COMSOL) framework fitted with the representative multicomponent equilibrium reaction network and good matching is obtained implying the successfulness of the lamella tool.
Characterization, Modeling, Monitoring, and Remediation of Fractured Rock
Characterization, Modeling, Monitoring, and Remediation of Fractured Rock - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Characterization, Modeling, Monitoring, and Remediation of Fractured Rock write by National Academies of Sciences, Engineering, and Medicine. This book was released on 2021-01-29. Characterization, Modeling, Monitoring, and Remediation of Fractured Rock available in PDF, EPUB and Kindle. Fractured rock is the host or foundation for innumerable engineered structures related to energy, water, waste, and transportation. Characterizing, modeling, and monitoring fractured rock sites is critical to the functioning of those infrastructure, as well as to optimizing resource recovery and contaminant management. Characterization, Modeling, Monitoring, and Remediation of Fractured Rock examines the state of practice and state of art in the characterization of fractured rock and the chemical and biological processes related to subsurface contaminant fate and transport. This report examines new developments, knowledge, and approaches to engineering at fractured rock sites since the publication of the 1996 National Research Council report Rock Fractures and Fluid Flow: Contemporary Understanding and Fluid Flow. Fundamental understanding of the physical nature of fractured rock has changed little since 1996, but many new characterization tools have been developed, and there is now greater appreciation for the importance of chemical and biological processes that can occur in the fractured rock environment. The findings of Characterization, Modeling, Monitoring, and Remediation of Fractured Rock can be applied to all types of engineered infrastructure, but especially to engineered repositories for buried or stored waste and to fractured rock sites that have been contaminated as a result of past disposal or other practices. The recommendations of this report are intended to help the practitioner, researcher, and decision maker take a more interdisciplinary approach to engineering in the fractured rock environment. This report describes how existing tools-some only recently developed-can be used to increase the accuracy and reliability of engineering design and management given the interacting forces of nature. With an interdisciplinary approach, it is possible to conceptualize and model the fractured rock environment with acceptable levels of uncertainty and reliability, and to design systems that maximize remediation and long-term performance. Better scientific understanding could inform regulations, policies, and implementation guidelines related to infrastructure development and operations. The recommendations for research and applications to enhance practice of this book make it a valuable resource for students and practitioners in this field.
Waste Forms Technology and Performance
Waste Forms Technology and Performance - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Waste Forms Technology and Performance write by National Research Council. This book was released on 2011-09-05. Waste Forms Technology and Performance available in PDF, EPUB and Kindle. The Department of Energy's Office of Environmental Management (DOE-EM) is responsible for cleaning up radioactive waste and environmental contamination resulting from five decades of nuclear weapons production and testing. A major focus of this program involves the retrieval, processing, and immobilization of waste into stable, solid waste forms for disposal. Waste Forms Technology and Performance, a report requested by DOE-EM, examines requirements for waste form technology and performance in the cleanup program. The report provides information to DOE-EM to support improvements in methods for processing waste and selecting and fabricating waste forms. Waste Forms Technology and Performance places particular emphasis on processing technologies for high-level radioactive waste, DOE's most expensive and arguably most difficult cleanup challenge. The report's key messages are presented in ten findings and one recommendation.
Submarine Groundwater Discharge: Impacts on Coastal Ecosystem by Hidden Water and Dissolved Materials
Submarine Groundwater Discharge: Impacts on Coastal Ecosystem by Hidden Water and Dissolved Materials - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Submarine Groundwater Discharge: Impacts on Coastal Ecosystem by Hidden Water and Dissolved Materials write by Makoto Taniguchi. This book was released on 2021-03-03. Submarine Groundwater Discharge: Impacts on Coastal Ecosystem by Hidden Water and Dissolved Materials available in PDF, EPUB and Kindle.
