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Field Scale Evaluation Of Biological Uranium Reduction And Reoxidation In The Near Source Zone At The Nabir Field Research Center In Oak Ridge Tn
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Book Synopsis Field-Scale Evaluation of Biological Uranium Reduction and Reoxidation in the Near-Source Zone at the NABIR Field Research Center in Oak Ridge, TN. by : Craig S. Criddle
Download or read book Field-Scale Evaluation of Biological Uranium Reduction and Reoxidation in the Near-Source Zone at the NABIR Field Research Center in Oak Ridge, TN. written by Craig S. Criddle and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Field tests began August 24, 2003 (Day 1). The work included an above ground treatment system to remove nitric acid, Ca and Al from groundwater and a nested well system to test uranium reduction and immobilization. We have now performed field tests of biostimulation for over 404 days, and the work continues. We have achieved the major goals of the field tests i.e. bio-reduction of U(VI) to U(IV) and immobilization of uranium in situ.
Book Synopsis Field-Scale Evaluation of Biological Uranium Reduction and Reoxidation in the Near-Source Zone at the NABIR Field Research Center in Oak Ridge, TN. by :
Download or read book Field-Scale Evaluation of Biological Uranium Reduction and Reoxidation in the Near-Source Zone at the NABIR Field Research Center in Oak Ridge, TN. written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have now added ethanol intermittently for over 700 days. Ethanol has been added weekly with each injection lasting for a few days. We are now observing: (1) Uranium immobilization at 700-2000 mg/kg. Baseline levels before remediation were 30-500 mg/kg. (2) Uranium concentrations in groundwater at the monitoring wells have fallen below the U.S. drinking water standard (30 ppb). This is an important milestone. (3) XANES analyses for day 535 indicate 51% U(IV) at the inner loop injection well, 35% U(IV) at MLS well 101-2, and 28% U(IV) at the extraction well. These numbers indicate that U(IV) reduction is not localized to the injection well, and is spreading through the aquifer. (4) We have had success removing trace levels of oxygen from recirculated water by addition of sulfite and related compounds. These compounds also provide the added benefit that in removing oxygen that themselves are oxidized to sulfate, an important electron acceptor needed for maintenance of our system.
Book Synopsis Field-scale Evaluation of Biological Uranium Reduction and Reoxidation in the Near-source Zone at the NABIR Field Research Center in Oak Ridge, TN. by : Baohua Gu
Download or read book Field-scale Evaluation of Biological Uranium Reduction and Reoxidation in the Near-source Zone at the NABIR Field Research Center in Oak Ridge, TN. written by Baohua Gu and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of the project is to advance the understanding and predictive capability of coupled hydrological, geochemical, and microbiological processes that control the in situ transport and bioremediation radionuclides and co-contaminants at multiple scales. Specific objectives include: (1) Investigate the feasibility of in situ bioremediation of uranium in a highly contaminated region within the subsurface of Area 3 of the DoE ERSP FRC (2) Using a variety of tracer strategies, develop and model a system that establishes hydraulic control of the target region for biostimulation (3) Perform long term in situ biostimulation studies that create a microbial communities capable of reducing residual nitrate to N2 and mobile U(VI) to sparingly soluble U(IV) (4) Use a variety of solid and solution phase interrogation techniques to quantify the extent of in situ reduction and immobilization of U(VI). (5) Investigate a variety of geochemical factors that influence the stability and possible reoxidation of reduced uranium.
Book Synopsis Field-Scale Evaluation of Biostimulation for Remediation of Uranium-Contaminated Groundwater at a Proposed NABIR Field Research Center in Oak Ridge, TN. by : Craig S. Criddle
Download or read book Field-Scale Evaluation of Biostimulation for Remediation of Uranium-Contaminated Groundwater at a Proposed NABIR Field Research Center in Oak Ridge, TN. written by Craig S. Criddle and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A hydrologic, geochemical and microbial characterization of the Area 3 field site has been completed. The formation is fairly impermeable, but there is a region of adequate flow approximately 50 feet bgs. The experiment will be undertaken within that depth interval. Groundwater from that depth is highly acidic (pH 3.2), and has high levels of nitrate, aluminum, uranium, and other heavy metals, as well as volatile chlorinated solvents (VOCs). Accordingly, an aboveground treatment train has been designed to remove these contaminants. The train consists of a vacuum stripper to remove VOCs, two chemical precipitation steps to adjust pH and remove metals, and a fluidized bed bioreactor to remove nitrate. The aboveground system will be coupled to a belowground recirculation system. The belowground system will contain an outer recirculation cell and a nested inner recirculation cell: the outer cells will be continuously flushed with nitrate-free treated groundwater. The inner cell will receive periodic inputs of uranium, tracer, and electron donor. Removal of uranium will be determined by comparing loss rates of conservative tracer and uranium within the inner recirculation cell. Over the past year, a detailed workplan was developed and submitted for regulatory approval. The workplan was presented to the Field Research Advisory Panel (FRAP), and after some extensive revision, the FRAP authorized implementation. Detailed design drawings and numerical simulations of proposed experiments have been prepared. System components are being prefabricated as skid-mounted units in Michigan and will be shipped to Oak Ridge for assembly. One manuscript has been submitted to a peer reviewed journal. This paper describes a novel technique for inferring subsurface hydraulic conductivity values. Two posters on this project were presented at the March 2002 NABIR PI meeting. One poster was presented at the Annual conference of the American Society for Microbiology in Salt Lake City, UT in May 2002.
Book Synopsis Hydrogeochemical and Stream Sediment Reconnaissance of the National Uranium Resource Evaluation Program by : National Uranium Resource Evaluation Program
Download or read book Hydrogeochemical and Stream Sediment Reconnaissance of the National Uranium Resource Evaluation Program written by National Uranium Resource Evaluation Program and published by . This book was released on 1976 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogeochemical and Stream Sediment Reconnaissance Basic Data Reports Computer Program Requests Manual by : National Uranium Resource Evaluation Program
Download or read book Hydrogeochemical and Stream Sediment Reconnaissance Basic Data Reports Computer Program Requests Manual written by National Uranium Resource Evaluation Program and published by . This book was released on 1980 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogeochemical and Stream Sediment Reconnaissance Survey of the National Uranium Resource Evaluation (NURE) Program, Western United States: Quarterly Progress Report by : National Uranium Resource Evaluation Program
Download or read book Hydrogeochemical and Stream Sediment Reconnaissance Survey of the National Uranium Resource Evaluation (NURE) Program, Western United States: Quarterly Progress Report written by National Uranium Resource Evaluation Program and published by . This book was released on 1977-07 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Remedial Investigation Report on Waste Area Grouping 5 at Oak Ridge National Laboratory, Oak Ridge, Tennessee. Volume 3 -- Appendix B by :
Download or read book Remedial Investigation Report on Waste Area Grouping 5 at Oak Ridge National Laboratory, Oak Ridge, Tennessee. Volume 3 -- Appendix B written by and published by . This book was released on 1995 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document provides the Environmental Restoration Program with information about the results of investigations performed at Waste Area Grouping (WAG) 5. It includes information on risk assessments that have evaluated long-term impacts to human health and the environment. Information provided in this document forms the basis for decisions regarding the need for subsequent remediation work at WAG 5. Sections B1.1 through B1.4 present an overview of the environmental setting of WAG 5, including location, population, land uses, ecology, and climate, and Sects. B1.5 through B1.7 give site-specific details (e.g., topography, soils, geology, and hydrology). The remediation investigation (RI) of WAG 5 did not entail en exhaustive characterization of all physical attributes of the site; the information presented here focuses on those most relevant to the development and verification of the WAG 5 conceptual model. Most of the information presented in this appendix was derived from the RI field investigation, which was designed to complement the existing data base from earlier, site-specific studies of Solid Waste Storage Area (SWSA) 5 and related areas.
Book Synopsis Aquatic Redox Chemistry by : Paul Tratnyek
Download or read book Aquatic Redox Chemistry written by Paul Tratnyek and published by OUP USA. This book was released on 2012-06-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a comprehensive overview of aquatic redox chemistry through chapters contributed by many of the leading investigators in the field.
Book Synopsis Environmental Catalysis by : Vicki H. Grassian
Download or read book Environmental Catalysis written by Vicki H. Grassian and published by CRC Press. This book was released on 2005-05-26 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of environmental interfaces and environmental catalysis is central to finding more effective solutions to air pollution and in understanding of how pollution impacts the natural environment. Encompassing concepts, techniques, and methods, Environmental Catalysis provides a mix of theory, computation, analysis, and synthesis to support the
Book Synopsis Biochemistry and Physiology of Anaerobic Bacteria by : Lars G. Ljungdahl
Download or read book Biochemistry and Physiology of Anaerobic Bacteria written by Lars G. Ljungdahl and published by Springer Science & Business Media. This book was released on 2003-04-08 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seeming sometimes more like science fiction than science, anaerobic bacteria have been at the center of a number of exciting new discoveries. This volume discusses and explains the diversity of metabolism, modes of protein transport, molecular biology and physiology of these unusual microbes. It has practical applications ranging from wastewater treatment to clinical diagnosis and treatment of medical conditions.
Book Synopsis Delivery and Mixing in the Subsurface by : Peter K. Kitanidis
Download or read book Delivery and Mixing in the Subsurface written by Peter K. Kitanidis and published by Springer Science & Business Media. This book was released on 2012-04-23 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is meant to provide the practitioner with information on the natural mixing processes occurring in aquifers as well as to describe basic strategies that can be implemented to enhance mixing in particular cases. For example, when it comes to mixing miscible liquids, one can speed up mixing in the formation by manipulating the flow such as through the use of recirculation wells. Furthermore, much of the mixing can be achieved partially within recirculation wells themselves, where contaminated water is admixed with additives, volatile products may be removed through a vapor mass exchanger, etc. Thus, adding mixing wells can significantly increase the performance of the delivery and mixing system and speed up the process of remediation.
Book Synopsis Phytoremediation and Rhizoremediation by : Martina Mackova
Download or read book Phytoremediation and Rhizoremediation written by Martina Mackova and published by Springer Science & Business Media. This book was released on 2006-09-19 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume represents an excellent description of the hottest topics in the field of phyto- and rhizoremediation. The book shows especially the importance of cooperation between plant and microorganisms, there is practically no phytoremediation without rhizoremediation. Newest approaches based on methods of molecular biology and genetic engineering are described, as well as plant science achievements.
Download or read book Linking Legacies written by and published by . This book was released on 1997 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Cartoon Guide to Chemistry by : Larry Gonick
Download or read book The Cartoon Guide to Chemistry written by Larry Gonick and published by Harper Collins. This book was released on 2005-05-03 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: If you have ever suspected that "heavy water" is the title of a bootleg Pink Floyd album, believed that surface tension is an anxiety disorder, or imagined that a noble gas is the result of a heavy meal at Buckingham Palace, then you need The Cartoon Guide to Chemistry to set you on the road to chemical literacy. You don't need to be a scientist to grasp these and many other complex ideas, because The Cartoon Guide to Chemistry explains them all: the history and basics of chemistry, atomic theory, combustion, solubility, reaction stoichiometry, the mole, entropy, and much more—all explained in simple, clear, and yes, funny illustrations. Chemistry will never be the same!
Book Synopsis Understanding Terrestrial Microbial Communities by : Christon J. Hurst
Download or read book Understanding Terrestrial Microbial Communities written by Christon J. Hurst and published by Springer. This book was released on 2019-03-27 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a summary of terrestrial microbial processes, which are a key factor in supporting healthy life on our planet. The authors explain how microorganisms maintain the soil ecosystem through recycling carbon and nitrogen and then provide insights into how soil microbiology processes integrate into ecosystem science, helping to achieve successful bioremediation as well as safe and effective operation of landfills, and enabling the design of composting processes that reduce the amount of waste that is placed in landfills. The book also explores the effect of human land use, including restoration on soil microbial communities and the response of wetland microbial communities to anthropogenic pollutants. Lastly it discusses the role of fungi in causing damaging, and often lethal, infectious diseases in plants and animals.
Book Synopsis Microbial Community Analysis by : Thomas E. Cloete
Download or read book Microbial Community Analysis written by Thomas E. Cloete and published by IWA Publishing. This book was released on 1997-01-01 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Community Analysis surveys the vast amount of theoretical and practical knowledge on the design of biological treatment systems. It describes the different types of biological wastewater systems, the role of microbial diversity in these systems, and how this affects design and operation, methods for studying microbial community dynamics, and mathematical modelling of these systems. Contents Biological methods for the treatment of wastewaters Biodiversity and microbial interactions in the biodegradation of organic compounds Microbial population dynamics in biological wastewater treatment plants Molecular techniques for determining microbial community structures in activated sludge Principles in the modelling of biological wastewater treatment plants Practical considerations for the design of biological wastewater treatment systems Scientific and Technical Report No.5
