Download or read book Magnetic Mineralogy Changes Due to Hydrocarbon Contaminated Sediments written by Nawrass Nahid Ameen and published by . This book was released on 2014 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrocarbon Contamination Induced Changes of Magnetic Properties in Soil and Sediment written by Moti Lal Rijal and published by . This book was released on 2010 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remagnetization and Chemical Alteration of Sedimentary Rocks written by Richard Douglas Elmore and published by Geological Society of London. This book was released on 2012 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridging Environmental Magnetism with Biogeophysics to Study Biogeochemical Processes of Today written by Luigi Jovane and published by Frontiers Media SA. This book was released on 2021-10-21 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover Image credit: Topic Editor Dr. Andrea Teixeira Ustra
Download or read book Magnetic Evidence of Iron Mineral Transformation in Hydrocarbon contaminated Aquifer written by Osadebamwen Leonard Ohenhen and published by . This book was released on 2021 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iron mineral transformation occurring in hydrocarbon-contaminated sites is linked to the biodegradation of hydrocarbons in these environments. Magnetic susceptibility (MS) has been proposed as a method for the continuous monitoring of the natural attenuation of hydrocarbons related to iron cycling. However, at the National Crude Oil Spill Fate and Natural Attenuation Research Site in Bemidji, MN, US, elevated MS signals were found to be transient, thereby making long-term MS monitoring uncertain. Furthermore, the iron mineral phases acting as transformation reactants and products associated with this long-term decrease in MS remain largely unknown. To address these ambiguities, we collected detailed mineral magnetism measurements, including hysteresis loops, backfield curves, and isothermal remanent magnetizations on core samples retrieved from different depths at the site and fresh magnetite packs installed within the contaminated and uncontaminated aquifer. Our results show that the magnetite packs display decreases in saturation magnetization (Ms) with time, where samples within the oil pool showed a 90% decrease over an eleven-month period compared to 20% for samples outside the oil pool. This loss in magnetization was accompanied by increases in bulk coercivity (Bc) indicative of possible decrease in grain sizes or partial oxidation. Low temperature magnetometry on all samples displayed behavior consistent with magnetite, as indicated by a prominent Verwey transition. However, samples within the plume also showed smearing of the Verwey transition and a higher remanence recovery during low temperature thermal cycling, which we interpret as evidence for maghemitization. This interpretation is supported by the occurrence of shrinkage cracks on the surface of the grains imaged during SEM analyses. The precipitous decrease in Ms within the water table fluctuation zone at the center of the plume is due to a combination of mineral dissolution and maghemitization. However, the center of the plume is strongly anoxic and would not support conventional abiotic oxidation. Here we propose that maghemitization is occurring within the anoxic portions of the plume via microbially mediated anaerobic oxidation. Microorganisms capable of such anaerobic oxidation have been identified within other areas at the Bemidji site, but additional microbiological studies are needed to link specific iron oxidizers with this loss of magnetization.
Download or read book Advances in the Characterisation and Remediation of Sites Contaminated with Petroleum Hydrocarbons written by Jonás García-Rincón and published by Springer Nature. This book was released on 2023-11-22 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book synthesizes important advances in the assessment and management of soil and groundwater systems contaminated with petroleum hydrocarbons, especially in the form of light non-aqueous phase liquids (LNAPLs). LNAPL characterization and remediation is challenging due to the multi-phase, multi-component nature of the problem and the various physical, chemical, and biological processes involved in a dynamic and heterogeneous hydrogeological setting. This book focuses on the current state of practice of LNAPL characterization and remediation and seeks to provide information and a framework that would allow some of these complexities to be better addressed by contaminated land practitioners, researchers, and regulators.
Download or read book Sediment Provenance Studies in Hydrocarbon Exploration and Production written by R.A. Scott and published by Geological Society of London. This book was released on 2014-06-25 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment provenance studies concern the origin, composition, transportation and deposition of detritus and therefore are an important part of understanding the links between basinal sedimentation, and hinterland tectonics and unroofing. Such studies can add value at many stages of hydrocarbon exploitation, from identifying regional-scale crustal affinities and sediment dispersal patterns during the earliest stages of exploration, to detailed correlation in producing reservoirs and understanding the impact of mineralogy on reservoir diagenesis. The volume showcases the wide variety of techniques available, using examples and applications from all aspects of sediment provenance research. The papers are organized into four sets around the following themes: • Overview: applications of provenance information in hydrocarbon reservoir sandstones • Provenance, diagenesis and reservoir quality • Provenance studies linking sediment to source • Looking forward: development of techniques and data handling This book is dedicated to the memory of Maria Mange and Robert A. Scott.
Download or read book Microbially Mediated Changes in Soil Magnetic Susceptibility as Consequence of Hydrocarbon Contamination written by Katharina Porsch and published by . This book was released on 2010 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Geoenvironmental Engineering written by Abdel-Mohsen O. Mohamed and published by Butterworth-Heinemann. This book was released on 2017-10-31 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Geoenvironmental Engineering: Understanding Soil, Water, and Pollutant Interaction and Transport examines soil-water-pollutant interaction, including physico-chemical processes that occur when soil is exposed to various contaminants. Soil characteristics relevant to remedial techniques are explored, providing foundations for the correct process selection. Built upon the authors' extensive experience in research and practice, the book updates and expands the content to include current processes and pollutants. The book discusses propagation of soil pollution and soil characteristics relevant to remedial techniques. Practicing geotechnical and environmental engineers can apply the theory and case studies in the book directly to current projects. The book first discusses the stages of economic development and their connections to the sustainability of the environment. Subsequent chapters cover waste and its management, soil systems, soil-water and soil-pollutant interactions, subsurface transport of pollutants, role of groundwater, nano-, micro- and biologic pollutants, soil characteristics that impact pollution diffusion, and potential remediation processes like mechanical, electric, magnetic, hydraulic and dielectric permittivity of soils. Presents a clear understanding of the propagation of pollutants in soils Identifies the physico-chemical processes in soils Covers emerging pollutants (nano-, micro- and biologic contaminants) Features in-depth coverage of hydraulic, electrical, magnetic and dielectric permittivity characteristics of soils and their impact on remedial technologies
Download or read book Metal Contaminated Aquatic Sediments written by HerbertE. Allen and published by Routledge. This book was released on 2018-04-27 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade the sediments of many rivers, lakes, and estuaries have been contaminated by inorganic and organic materials. Contaminants from sediments, under certain conditions, can be released into overlying waters. Thus, sediments may be an important source of contaminants to waters in which littoral and atmospheric contaminants have been reduced or eliminated. Often found in aquatic sediments, metals are exposed to many reactions, such as sorption and precipitation, and are greatly influenced by the redox conditions in the sediment. The reactions - usually over a period of time - reflect biotic processing as well as chemical transformations. This book describes these important processes. Metal Contaminated Aquatic Sediments outlines advances in environmental chemistry, effective new modeling techniques, applications for biological treatment, and cycling and transport of trace metals in sedimentary environments. Each chapter contains a detailed reference section that draws upon a stunning array of sources. The book includes many figures and tables that illustrate the process under discussion. Features
Download or read book Remagnetization and Chemical Alteration of Sedimentary Rocks written by Richard Douglas Elmore and published by Geological Society of London. This book was released on 2012 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Magnetic Investigation of the Michigan Basin Soils and Sediments Overlying the Oil Bearing Silurian Pinnacle Reefs written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : A relationship between the hydrocarbon migration and magnetic properties of near-surface sediments was investigated from several hundreds of samples collected over the hydrocarbon-bearing Silurian pinnacle reef belt of the Michigan Basin. The collected samples were investigated using several rock magnetic methods and optical microscopy. The investigation has not revealed a straightforward relationship between the magnetic susceptibility and hydrocarbon reservoirs within the reef belt; both anomalously high and low susceptibility values were observed. The elevated values are associated with newly formed magnetite in the form of spheroidal grains produced by hydrocarbon-related diagenesis while the extremely low susceptibilities may reflect dissolution of the originally present hematite. However, a strong correlation was observed between the elevated susceptibility and the gas reservoirs in the Devonian Traverse Group. The obtained results indicate that the magnetic susceptibility method has a hydrocarbon exploration potential but the relevant processes of magnetic mineral diagenesis require additional investigation.
Download or read book Mineral Formation by Microorganisms written by Aydin Berenjian and published by Springer Nature. This book was released on 2022-05-07 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains how microorganisms play a pivotal role in the formation of biominerals, including carbonates, silicate minerals and oxides. As readers will learn, these minerals may be produced either intracellularly or extracellularly in order to sustain microbial life. Experienced scientists from the field show that some of these biominerals can be produced in an active form, which involves direct enzymatic intervention to form precipitates. In addition, passive mineral formation can be mediated by the presence of dead cells. Readers from Microbiology and Biochemistry will appreciate the thorough coverage on various types of microbial mineral formation and their roles in microbial domains. Furthermore, they will benefit from the authors’ first-hand knowledge regarding common techniques for studying biomineral-producing microorganisms, factors affecting biomineralization, and the use of this process in biotechnological applications.
Download or read book Soil Magnetism written by Neli Jordanova and published by Academic Press. This book was released on 2016-11-10 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil Magnetism: Applications in Pedology, Environmental Science and Agriculture provides a systematic, comparative, and detailed overview of the magnetic characterization of the major soil units and the observed general relationships, possibilities, and perspectives in application of rock magnetic methods in soil science, agriculture, and beyond. Part I covers detailed magnetic and geochemical characterization of major soil types according to the FAO classification system, with Part II covering the mapping of topsoil magnetic signatures on the basis of soil magnetic characteristics. The book concludes with practical examples on the application of magnetic methods in environmental science, agriculture, soil pollution, and paleoclimate. Provides an overview of the major findings of uncontaminated soil profiles and proposes a system of magnetic characteristics Elucidates the relationship between geochemical and magnetic characteristics of different soil types, providing a basis for wider recognition and application of soil magnetism in classical pedagogical characterization of soils Covers the peculiarities of the main taxonomic soil groups in terms of magnetic mineralogy and depth variations in concentration, grain size, and phase composition of iron oxides
Download or read book Encyclopedia of Solid Earth Geophysics written by Harsh Gupta and published by Springer Science & Business Media. This book was released on 2011-06-29 with total page 1579 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past few decades have witnessed the growth of the Earth Sciences in the pursuit of knowledge and understanding of the planet that we live on. This development addresses the challenging endeavor to enrich human lives with the bounties of Nature as well as to preserve the planet for the generations to come. Solid Earth Geophysics aspires to define and quantify the internal structure and processes of the Earth in terms of the principles of physics and forms the intrinsic framework, which other allied disciplines utilize for more specific investigations. The first edition of the Encyclopedia of Solid Earth Geophysics was published in 1989 by Van Nostrand Reinhold publishing company. More than two decades later, this new volume, edited by Prof. Harsh K. Gupta, represents a thoroughly revised and expanded reference work. It brings together more than 200 articles covering established and new concepts of Geophysics across the various sub-disciplines such as Gravity, Geodesy, Geomagnetism, Seismology, Seismics, Deep Earth Processes, Plate Tectonics, Thermal Domains, Computational Methods, etc. in a systematic and consistent format and standard. It is an authoritative and current reference source with extraordinary width of scope. It draws its unique strength from the expert contributions of editors and authors across the globe. It is designed to serve as a valuable and cherished source of information for current and future generations of professionals.
Download or read book Learning from the Land written by Linda M. Hill and published by . This book was released on 1998 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Pollution and Ecosystems written by P. Mathy and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the concluding session of the symposium "Acid Deposition, a Challenge for Europe" held in Karlsruhe in September 1983, Dr. GINJAAR, the former Minister of Health and Environmental Protection of the Netherlands, emphasised the need for setting up a concerted research programme including the effects of air pollution on terrestrial and aquatic ecosystems. The Council of Ministers of the European Community in 1984 adopted a revision of the 3rd Community Programme on Environment comprising contract research and concerted action in the field of the effects of air pollution in eco systems. These research areas were also introduced in the 4th R-D Community Programme on Environment, adopted by the Council of Ministers in 1986 and are subject again to contract research and concerted action. The Commission of the European Community is very concerned to increase the effectiveness of researcn projects carried out within the national programmes, and those undertaken at the Community level. The Commission tends to develop an integrated scientific approach, including not only the physico-chemical behaviour, the transport and the deposition of airborne pollutants but also the effects of these pollutants, in particular on living organisms and ecosystems. With regard to the specific issue of the effects, the Commission is trying to develop and strengthen a multi-disciplinary approach associating biologists, pathologists, eco physiologists, and specialists of soil sciences, within the concerted action, as well as within coordinated research projects.
