Download or read book Microbial Fe II Oxidation at Circumneutral PH written by S. Vollrath and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Microbe metal Interactions written by Derek R. Lovley and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This specialist research–level monograph presents an overview of environmentally significant microbe–metal interactions, covering both enzymatic and non–enzymatic reactions.
Download or read book Fluctuation Analysis of Oxidation Reduction Potential in Circumneutral PH Iron Oxidizing Microbial Systems written by Allison Enright and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this thesis was to assess the utility of using small-scale fluctuations in oxidation-reduction (redox) potential to distinguish microbial from chemical iron oxidation. Fluctuations in potential arise from the motion of particles in a fluid; measuring fluctuations is therefore a system-scale observable property of micro-scale chemical behaviour, as such particle motion constitutes diffusion. Fluctuations are described by the strength of their correlation, as measured by scaling exponents. A method for the calculation of scaling-exponents of long-range correlation in redox potential measurements was developed, including new instrumentation and the modification of an existing physiological processing algorithm for use with environmental microbiological data sets. Steady-state biological and chemical systems were compared, and scaling exponents calculated from each system were found to differ significantly. In a final study, a series of microcosms were used to determine the relationship between scaling exponent, measuring correlation strength, and oxidation rate. The biological systems are governed by the rate of reaction, while the chemical systems appear to be diffusion-controlled. Because in these systems, Fe(II) is a metabolite, redox potential can then be interpreted as a physically-constrained proxy for metabolic activity. This allows the characterization of biological activity in situ.
Download or read book Iron Oxides written by Damien Faivre and published by John Wiley & Sons. This book was released on 2016-08-08 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alle relevanten Informationen zu Eisenoxiden, von der Struktur und Transformation über Charakterisierungsverfahren bis hin zu den neuesten AnwendungEN. Ein Muss für alle, die in dem Fachgebiet arbeiten.
Download or read book The microbial ferrous wheel iron cycling in terrestrial freshwater and marine environments written by David Emerson and published by Frontiers E-books. This book was released on with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past 15 years, there has been steady growth in work relating to the microbial iron cycle. It is now well established that in anaerobic environments coupling of organic matter utilization to Fe reduction is a major pathway for anaerobic respiration. In iron-rich circumneutral environments that exist at oxic-anoxic boundaries, significant progress has been made in demonstrating that unique groups of microbes can grow either aerobically or anaerobically using Fe as a primary energy source. Likewise, in high iron acidic environments, progress has been made in the study of communities of microbes that oxidize iron, and in understanding the details of how certain of these organisms gain energy from Fe-oxidation. On the iron scarcity side, it is now appreciated that in large areas of the open ocean Fe is a key limiting nutrient; thus, a great deal of research is going into understanding the strategies microbial cells, principally phytoplankton, use to acquire iron, and how the iron cycle may impact other nutrient cycles. Finally, due to its abundance, iron has played an important role in the evolution of Earth’s primary biogeochemical cycles through time. The aim of this Research Topic is to gather contributions from scientists working in diverse disciplines who have common interests in iron cycling at the process level, and at the organismal level, both from the perspective of Fe as an energy source, or as a limiting nutrient for primary productivity in the ocean. The range of disciplines may include: geomicrobiologists, microbial ecologists, microbial physiologists, biological oceanographers, and biogeochemists. Articles can be original research, techniques, reviews, or synthesis papers. An overarching goal is to demonstrate the environmental breadth of the iron cycle, and foster understanding between different scientific communities who may not always be aware of one another’s work.
Download or read book Molecular Geomicrobiology written by Jillian Fiona Banfield and published by Mineralogical Society of Amer. This book was released on 2005 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 59 of Reviews in Mineralogy and Geochemistry ties together themes common to environmental microbiology, earth science, and astrobiology. The resesarch presented here, the associated short course, and the volume production were supported by funding from many sources, notably the Mineralogical Society of America, the Geochemical Society, the US Department of Energy Chemical Sciences Program and the NASA Astrobiology Institute.
Download or read book Microbial Iron Redox Cycling in Terrestrial Environments written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial redox cycling of iron (Fe) plays a central role in controlling terrestrial element partitioning, with broader impacts on subsurface contaminant mobility and the development of geochemical cycles on Earth. This dissertation explores the capacity of native microbial communities to oxidize and reduce Fe in terrestrial circumneutral-pH environments by coupling environmental sampling campaigns to bench-top experiments. Microbial Fe-oxide reduction can result in magnetite production, potentially explaining magnetite in Precambrian sedimentary rocks. The only modern analog occurs in sediments at the Bay of Vidy (Lake Geneva, Switzerland), where in situ magnetite formation is directly associated with microbial reduction. Geochemistry and isotope composition of Fe in these sediments was investigated. Despite extensive microbial reduction, very little Fe isotope variation was observed, indicating Fe isotope homogeneity is not sufficient to rule out a biological mechanism for magnetite formation. Microbial oxidation of solid-phase Fe(II) at circumneutral pH is a key pathway in controlling element partitioning and contaminant stability in modern terrestrial environments. Experimental reactors were constructed with sediment from a contaminated subsurface environment (Hanford 300 Area, Richland, WA) to determine how native microbes responded to oxidant flux. Endogenous microbial communities rapidly responded to chemical oxidant input (O2 or NO3) concurrently stabilizing. Uninoculated oxic reactors showed significant Fe(II) oxidation, enhancing our understanding of the capacity for native microbes in subsurface sediment to maintain redox state. A second series of reactors explored the capacity of native microbes to oxidize solid-phase Fe minerals. The first microbial cultures capable of aerobic pyrite (FeS2) oxidation at circumneutral pH were recovered. These enrichment cultures demonstrated growth tied to pyrite oxidation and sulfate generation for over one year of repeated transfers. Aerobic pyrite oxidation has been proposed to be a dominant pathway in Precambrian sulfur cycling. The mineralogical, microbiological, and geochemical changes observed in these experiments shed light on the role of microbes in sulfur cycling in ancient and modern subsurface environments. Finally, my Teaching and Learning Portfolio, the capstone requirement for the Delta Program's Certificate in Research, Teaching, and Learning, is included to highlight some of the broader impacts of my graduate career.
Download or read book Fundamentals of Geobiology written by Andrew H. Knoll and published by John Wiley & Sons. This book was released on 2012-03-30 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2012 PROSE Award, Earth Science: Honorable Mention For more than fifty years scientists have been concerned with the interrelationships of Earth and life. Over the past decade, however, geobiology, the name given to this interdisciplinary endeavour, has emerged as an exciting and rapidly expanding field, fuelled by advances in molecular phylogeny, a new microbial ecology made possible by the molecular revolution, increasingly sophisticated new techniques for imaging and determining chemical compositions of solids on nanometer scales, the development of non-traditional stable isotope analyses, Earth systems science and Earth system history, and accelerating exploration of other planets within and beyond our solar system. Geobiology has many faces: there is the microbial weathering of minerals, bacterial and skeletal biomineralization, the roles of autotrophic and heterotrophic metabolisms in elemental cycling, the redox history in the oceans and its relationship to evolution and the origin of life itself.. This book is the first to set out a coherent set of principles that underpin geobiology, and will act as a foundational text that will speed the dissemination of those principles. The chapters have been carefully chosen to provide intellectually rich but concise summaries of key topics, and each has been written by one or more of the leading scientists in that field.. Fundamentals of Geobiology is aimed at advanced undergraduates and graduates in the Earth and biological sciences, and to the growing number of scientists worldwide who have an interest in this burgeoning new discipline. Additional resources for this book can be found at: http://www.wiley.com/go/knoll/geobiology.
Download or read book Surface Complexation Modeling written by David A. Dzombak and published by John Wiley & Sons. This book was released on 1991-01-16 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a description of the thermodynamic model, data treatment procedures and the thermodynamic constants for hydrous ferric oxide. Includes detailed coverage of the model and the parameter extraction procedure.
Download or read book Ehrlich s Geomicrobiology written by Henry Lutz Ehrlich and published by CRC Press. This book was released on 2015-10-15 with total page 643 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in geomicrobiology have progressed at an accelerated pace in recent years. Ehrlich's Geomicrobiology, Sixth Edition surveys various aspects of the field, including the microbial role in elemental cycling and in the formation and degradation of minerals and fossil fuels. Unlike the fifth edition, the sixth includes many expert contributors
Download or read book Manual of Environmental Microbiology written by Christon J. Hurst and published by American Society for Microbiology Press. This book was released on 2007-05-14 with total page 3023 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most definitive manual of microbes in air, water, and soil and their impact on human health and welfare. • Incorporates a summary of the latest methodology used to study the activity and fate of microorganisms in various environments. • Synthesizes the latest information on the assessment of microbial presence and microbial activity in natural and artificial environments. • Features a section on biotransformation and biodegradation. • Serves as an indispensable reference for environmental microbiologists, microbial ecologists, and environmental engineers, as well as those interested in human diseases, water and wastewater treatment, and biotechnology.
Download or read book Treatise on Geochemistry written by and published by Newnes. This book was released on 2013-10-19 with total page 14787 pages. Available in PDF, EPUB and Kindle. Book excerpt: This extensively updated new edition of the widely acclaimed Treatise on Geochemistry has increased its coverage beyond the wide range of geochemical subject areas in the first edition, with five new volumes which include: the history of the atmosphere, geochemistry of mineral deposits, archaeology and anthropology, organic geochemistry and analytical geochemistry. In addition, the original Volume 1 on "Meteorites, Comets, and Planets" was expanded into two separate volumes dealing with meteorites and planets, respectively. These additions increased the number of volumes in the Treatise from 9 to 15 with the index/appendices volume remaining as the last volume (Volume 16). Each of the original volumes was scrutinized by the appropriate volume editors, with respect to necessary revisions as well as additions and deletions. As a result, 27% were republished without major changes, 66% were revised and 126 new chapters were added. In a many-faceted field such as Geochemistry, explaining and understanding how one sub-field relates to another is key. Instructors will find the complete overviews with extensive cross-referencing useful additions to their course packs and students will benefit from the contextual organization of the subject matter Six new volumes added and 66% updated from 1st edition. The Editors of this work have taken every measure to include the many suggestions received from readers and ensure comprehensiveness of coverage and added value in this 2nd edition The esteemed Board of Volume Editors and Editors-in-Chief worked cohesively to ensure a uniform and consistent approach to the content, which is an amazing accomplishment for a 15-volume work (16 volumes including index volume)!
Download or read book M ssbauer Spectroscopy of Environmental Materials and Their Industrial Utilization written by Enver Murad and published by Springer Science & Business Media. This book was released on 2011-06-28 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mössbauer Spectroscopy of Environmental Materials and their Industrial Utilization provides a description of the properties of materials formed on the earth's surface, their synthetic analogs where applicable, and the products of their modifications in the course of natural processes, such as weathering, or in industrial processing as reflected in their Mössbauer spectra. Particular emphasis is placed on the way in which these processes can be observed and elucidated through the use of Mössbauer spectroscopy. The first chapter covers the basic theory of the Mössbauer effect and Chapters 2 and 3 deal with the nuts and bolts of experimental Mössbauer spectroscopy. The principles of these first three chapters, illustrated with many case studies, are applied to different areas of interest in Chapters 4 through 12. The book is directed to a broad audience ranging from graduate students in environmental sciences or chemical engineering with little or no expertise in Mössbauer spectroscopy to researchers from other disciplines who are familiar with this technique but wish to learn more about possible applications to environmental materials and issues.
Download or read book Aquatic Geomicrobiology written by Donald E. Canfield and published by Gulf Professional Publishing. This book was released on 2005-03-31 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbes catalyze countless chemical reactions in nature which control the chemistry of the environment. Aquatic Geomicrobiology looks at these reactions and their effect on the aquatic environments from the perspective of the microbes involved. The volume begins with three introductory chapters outlining the basic principles of microbial systematics, microbial ecology, and chemical thermodynamics. These provide a framework for exploring the microbial control of elemental cycling in the remaining chapters. Readers will learn how microbes control the cycling of elements, the structure of the microbial ecosystems involved, and what environmental factors influence the activities of microbial populations. Also available in hardback Written by international experts in the microbial ecology and biogeochemistry of aquatic systems Includes introductory chapters on microbial systematics, principles of microbial ecology, and chemical thermodynamics Contains over 1500 references
Download or read book Metals Microbes and Minerals The Biogeochemical Side of Life written by Peter Kroneck and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-01-18 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the biggest questions in today's biochemistry is how biological molecules became essential for the processes that occur within living cells. This new book from outstanding Metal Ions in Life Science series gives an overview about biochemical evolution of organic molecules and metabolic pathways in living systems and outlines the vital biochemical processes in microbial cells in which metals are involved.
Download or read book Practical Handbook on Agricultural Microbiology written by Natarajan Amaresan and published by . This book was released on 2022 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume details techniques involved in the study of beneficial microbes in agricultural microbiology towards enhancing global agricultural productivity. Chapters cover a wide range of basic and advanced techniques associated with research on isolation of agriculturally important microbes, identification, biological nitrogen fixation, microbe mediated plant nutrient use efficiency, biological control of plant diseases and pests. Authoritative and cutting-edge, Practical Handbook on Agricultural Microbiology aims to be a useful practical guide to researches to help further their study in this field.
Download or read book Biomineralization written by Astrid Sigel and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomineralization is a hot topic in the area of materials, and this volume in the Metals Ions in Life Sciences series takes a systematic approach, dealing with all aspects from the fundamentals to applications. Key biological features of biomineralization, such as gene directed growth and the role of enzymes are covered, as are new areas, including copper/zinc in the jaws of invertebrates or magnetic biomaterials that help birds with navigation
