Download or read book Hydrogeochemical Characteristics of an Unconsolidated Aquifer Downgradient from an Oxidized Sulfidic Mine Tailings Impoundment written by Robert H. Lambeth and published by . This book was released on 1992 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Contamination of ground and surface water by the oxidation products from sulfidic mine waste impoundments is a widespread environmental problem. To help alleviate this problem a program was designed whereby an oxidizing sulfidic waste impoundment was to be studied to characterize probable mechanisms of oxidation in the impoundment as well as the fate of metals as they were transported downgradient. From this information methods of controlling dissolved metal transport were to be identified. A field site with a mine tailings impoundment which is releasing mine waste-derived heavy metals into an unconsolidated aquifer was sampled and characterized. Piezometers were installed upgradient from, within, and downgradient from the waste. During a 2.5 year period water samples were collected and analyzed for 17 dissolved constituents, and field measurements for pH, redox potential, dissolved oxygen, temperature, alkalinity, conductivity were made. Results indicated that at the site dissolution occurs as a consequence of oxidation of sulfide minerals in the unsaturated zone of the mine waste. Infiltrating seasonal precipitation carries the oxidation products downward into the saturated zone and into an underlying aquifer. Below the impoundment this metal-rich acid water is partially neutralized by calcareous strata, and precipitation of pH-sensitive species occurs oxygen consumption. Downgradient attenuation oxidized mineral species and increased oxygen without significant correlates with more consumption. Because oxidation of dissolved metal and attendant coprecipitation was identified as a primary mechanism of attenuation, air injection at a location immediately downgradient from the impoundment is postulated as a method of increasing oxidation rates and coprecipitation efficiency."--Document.
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the though that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemi nation. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 37 (thesis year 1992) a total of 12,549 thesis titles from 25 Canadian and 153 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 37 reports theses submitted in 1992, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Download or read book U S Geological Survey Open file Report written by and published by . This book was released on 1994 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open file Report written by and published by . This book was released on 1996 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of a Reactive Barrier and Aquifer Geology on Metal Distribution and Mobility in a Mine Drainage Impacted Aquifer written by Nora A. Doerr and published by . This book was released on 2004 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Nickel Rim aquifer has been impacted for five decades by a metal-rich plume generated from the Nickel Rim mine tailings impoundment. Metals released by the oxidation of pyrrhotite in the unsaturated zone of the tailings migrate into the downgradient aquifer, affecting both the groundwater and the aquifer solids. A reactive barrier has been installed in the aquifer to remove sulfate and metals from the groundwater. The effect of the reactive barrier on metal concentrations in the aquifer solids has not previously been studied, nor have other controls on metal distribution in the solid phase. In this study, a range of chemical extraction methods was applied to cores of aquifer sediment, to ascertain the distribution of metals among various solid phases present in the aquifer solids"--Abstract.
Download or read book The Environmental Geochemistry of Sulfide Mine wastes written by David W. Blowes and published by . This book was released on 1994 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of the Geology and Mineral Resources of Washington 1991 1995 written by and published by . This book was released on 2000 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of a Reative Barrier and Aquifer Geology on Metal Distribution and Mobility in a Mine Drainage Impacted Aquifer written by and published by . This book was released on 2004 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Mobility and Attenuation in Mine Tailings and a Mine Drainage Impacted Aquifer with a Reactive Barrier Sudbury ON written by N. A. Doerr and published by . This book was released on 2003 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Concentrations of metals bound in the solid phase of the Nickel Rim tailings impoundment and downgradient aquifer were measured. Chemical extraction techniques and groundwater sampling, among other techniques, were used to assess the mobility of metals in the Nickel Rim impoundment and aquifer. Emphasis was placed on the effects of geology and a reactive barrier on the solid phase geochemistry of the aquifer. Tailings geochemistry determined by extraction techniques was compared to measurements of mineralogy and pore water chemistry made previously"--Abstract.
Download or read book Conf rences Les 16 17 Et 18 Septembre 1991 written by MEND (Canada) and published by MEND, 1991-[1992]. This book was released on 1991 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Bibliography and Index of the Geology and Mineral Resources of Washington 1991 1995 written by and published by . This book was released on 1996 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium written by Peter C. Burns and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 38 of Reviews in Mineralogy provides detailed reviews of various aspects of the mineralogy and geochemistry of uranium. We have attempted to produce a volume that incorporates most important aspects of uranium in natural systems, while providing some insight into important applications of uranium mineralogy and geochemistry to environmental problems. The result is a blend of perspectives and themes: historical (Chapter 1), crystal structures (Chapter 2), systematic mineralogy and paragenesis (Chapters 3 and 7), the genesis of uranium ore deposits (Chapters 4 and 6), the geochemical behavior of uranium and other actinides in natural fluids (Chapter 5), environmental aspects of uranium such as microbial effects, groundwater contamination and disposal of nuclear waste (Chapters 8, 9 and 10), and various analytical techniques applied to uranium-bearing phases (Chapters 11-14). This volume was written in preparation for a short course by the same title, sponsored by the Mineralogical Society of America, October 22 and 23, 1999 in Golden, Colorado, prior to MSA's joint annual meeting with the Geological Society of America.
Download or read book Environmental Mineralogy written by David J. Vaughan and published by . This book was released on 2000 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization Modeling Monitoring and Remediation of Fractured Rock written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2021-01-29 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Mine Wastes written by Bernd Lottermoser and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's best practice in environmental mine-waste management requires a thorough understanding of the wastes produced. The knowledge of mine wastes represents a new interdisciplinary science and this book provides an introductory, descriptive and analytic overview of the wastes produced in the mineral industry. It describes the characterization, prediction, monitoring, disposal and treatment as well as environmental impacts. Intended for undergraduate courses, it systematically builds the reader’s understanding and knowledge of the wastes produced, their physical and chemical characteristics, and how to deal responsibly with them on a short and long-term basis. The text employs 22 case studies spanning the world’s mineral industry that elucidate best practice and specific challenges in mine-waste management and site rehabilitation.
Download or read book Prospects for Managed Underground Storage of Recoverable Water written by National Research Council and published by National Academies Press. This book was released on 2008-01-07 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growing demands for water in many parts of the nation are fueling the search for new approaches to sustainable water management, including how best to store water. Society has historically relied on dams and reservoirs, but problems such as high evaporation rates and a lack of suitable land for dam construction are driving interest in the prospect of storing water underground. Managed underground storage should be considered a valuable tool in a water manager's portfolio, although it poses its own unique challenges that need to be addressed through research and regulatory measures.
Download or read book Karst Management written by Philip E. van Beynen and published by Springer Science & Business Media. This book was released on 2011-06-21 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing specifically on the management of karst environments, this volume draws together the world’s leading karst experts to provide a vital source for the study and management of this unique physical setting. Although karst landscapes cover 12% of the Earth’s terrain and provide 25% of the world’s drinking water, the resource management of karst environments has only previously received indirect attention. Through a comprehensive approach, Karst Management focuses on engineering issues associated with surface karst such as quarries, dams, and agriculture, subsurface topics such as the management of groundwater, show caves, cave biota, and geo-archaeology projects. Chapters that focus on karst as an integrated system look at IUCN World Heritage sites, national parks, policy and regulation, measuring systematic disturbance, information management, and public environmental education. The text incorporates the most up-to-date research from leading karst scientists. This volume provides important perspectives for university students, educators, geoengineers, resource managers, and planners who are interested in or work with this unique physical landscape.
