Download or read book Microbial Sulfate Reduction in Extremely Acid Lakes written by and published by . This book was released on 1985 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dynamics of Microbial Ferric and Sulfate Reduction in Acidic Mine Lake Sediments and Their Impact on Water Quality written by Huynh Anh Pham and published by . This book was released on 2009 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] Acidic mine lakes are formed as a result of the oxidation and dissolution of metal sulfide minerals and are primarily characterized by low pH values of 2 4. Many strategies for the bioremediation of acidic mine lakes depend on the alkalinity generation capabilities of microbial ferric and/or sulfate reducing bacteria. However nearly all mine lakes are oligotrophic, with very low concentrations of available organic carbon and nutrients; all required for healthy microbial growth. There is also an unusual class of mine lakes characterized by low concentrations of organic carbon and also very low concentrations of dissolved iron and sulfate. Our ability to promote microbial activity in these systems is especially challenging. This study focuses on one of these systems, Lake Kepwari, a coal mine lake in Western Australia. Numerical modeling of remediation strategies is an efficient way of testing scenarios prior to expensive in-field trials. However such modeling relies on good descriptions of microbial processes, including kinetic parameterizations of ferric and sulfate reduction. There has been little research to date on the study of kinetic parameterizations of the chemical and biological alkalinity generation in acidic mine lakes. The objectives of this thesis were to investigate the viability of microbial ferric and sulfate reduction in an ultraoligotrophic, acidic mine lake, to assess the impact of these microbial processes on water quality and to parameterize the Dual Monod kinetics of neutralization under dual limitation conditions. Molecular analyses including most probable number, DNA extraction, polymerase chain reaction, polymerase chain reaction denaturing gradient gel electrophoresis were used to examine the microbial communities in the lake sediments. ... The Monod maximum specific microbial growth rates with respect to dissolved organic carbon and ferric, and as determined in batch experiments, were 0.07 ± 0.01 and 0.048 ± 0.02 day-1, respectively, and their corresponding Monod half saturation constants and were 14.37 and 5.6 mmol L-1. The Monod maximum consumption rates under ferric and OC limitation were also estimated. The Monod maximum specific microbial growth rates with respect to dissolved organic carbon and sulfate, , and were 0.05 ± 0.01, 0.08 ± 0.01 and 0.07 ± 0.02 day-1, respectively, and their corresponding Monod half saturation constants, and were 75.5, 131.8 and 10.2 mmol L-1. The Monod maximum consumption rates under sulfate and OC limitation were also estimated. The results of this study suggest that strategies for the remediation of ultraoligotrophic, acidic mine lakes may rely on microbial ferric and sulfate reduction, however additions of both organic carbon and sulfate/ferric are essential. These results can be immediately applied to mesocosm studies in outdoor enclosures and to the management of acidic mine lakes. Furthermore, this thesis has provided a new, valuable understanding on the Dual Monod kinetic parameterizations of neutralization for an ultraoligotrophic, acidic mine lake environment. These parameterizations are essential for the lake ecological models that will be used to investigate remediation scenarios for acidic mine lakes.

Download or read book Acidic Mining Lakes written by Walter Geller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acidification is a universal problem at all mining sites in which oxygenated water comes in contact with sulfide minerals or other reduced sulfur compounds. An International Workshop was held in September 1995 at the Department for Inland Water Research of the UFZ-Centre for Environmental Research in Magdeburg on the limnology of lakes created by open-cast lignite mining, emphasizing the often observed geogenic acidification after oxidation of pyrite. The volume has 25 chapters including a chapter with results of group discussions about the topics mentioned above and further problems that were identified during the meeting. The monograph gives a baseline of the state of science on the worldwide problem of geogenic acidification of lakes following human mining activities.

Download or read book The Prokariotes written by Albert Balows and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sulfur Biogeochemistry written by Jan P. Amend and published by Geological Society of America. This book was released on 2004 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acid Stress and Aquatic Microbial Interactions written by Salem Rao and published by CRC Press. This book was released on 1989-04-30 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents information and techniques which are at the leading edge of microbial acid rain research and addresses a number of topical and important issues of global concern. Topics discussed include microbial responses to low pH and biogeochemical processes. Cycling of organic matter, microbial interactions with higher forms of biota, and the factors affecting these processes and interactions are described. This book is of special interest to researchers and those involved in management of acid - stressed waters.

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Areal Distribution of Sulfate Reduction Products in Lake Sediments Receiving Acid Mine Drainage written by Enid Joan Bulley and published by . This book was released on 1988 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sulfate Reduction in the Sediments of Clear Lake California written by Chance E. Asher and published by . This book was released on 2003 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 1550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sulphate Reducing Bacteria written by Larry L. Barton and published by Cambridge University Press. This book was released on 2007-05-31 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher description

Download or read book The Prokaryotes written by Edward F. DeLong and published by Springer. This book was released on 2014-10-13 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Prokaryotes is a comprehensive, multi-authored, peer reviewed reference work on Bacteria and Achaea. This fourth edition of The Prokaryotes is organized to cover all taxonomic diversity, using the family level to delineate chapters. Different from other resources, this new Springer product includes not only taxonomy, but also prokaryotic biology and technology of taxa in a broad context. Technological aspects highlight the usefulness of prokaryotes in processes and products, including biocontrol agents and as genetics tools. The content of the expanded fourth edition is divided into two parts: Part 1 contains review chapters dealing with the most important general concepts in molecular, applied and general prokaryote biology; Part 2 describes the known properties of specific taxonomic groups. Two completely new sections have been added to Part 1: bacterial communities and human bacteriology. The bacterial communities section reflects the growing realization that studies on pure cultures of bacteria have led to an incomplete picture of the microbial world for two fundamental reasons: the vast majority of bacteria in soil, water and associated with biological tissues are currently not culturable, and that an understanding of microbial ecology requires knowledge on how different bacterial species interact with each other in their natural environment. The new section on human microbiology deals with bacteria associated with healthy humans and bacterial pathogenesis. Each of the major human diseases caused by bacteria is reviewed, from identifying the pathogens by classical clinical and non-culturing techniques to the biochemical mechanisms of the disease process. The 4th edition of The Prokaryotes is the most complete resource on the biology of prokaryotes. The following volumes are published consecutively within the 4th Edition: Prokaryotic Biology and Symbiotic Associations Prokaryotic Communities and Ecophysiology Prokaryotic Physiology and Biochemistry Applied Bacteriology and Biotechnology Human Microbiology Actinobacteria Firmicutes Alphaproteobacteria and Betaproteobacteria Gammaproteobacteria Deltaproteobacteria and Epsilonproteobacteria Other Major Lineages of Bacteria and the Archaea

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 Geomicrobiology Natural and Anthropogenic Settings written by Lucian C. Staicu and published by Springer Nature. This book was released on with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Ecosystems in Extreme Environments written by and published by Academic Press. This book was released on 2019-05-29 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Model Ecosystems in Extreme Environments, Second Edition examines ecosystems at the most extreme habitats and their interaction with the environment, providing a key element in our understanding of the role and function of microorganisms in nature. The book highlights current topics in the field, such as biodiversity and the structure of microbial communities in extreme environments, the effects of extreme environmental conditions on microbial ecosystems, and ecological and evolutionary interactions in extreme environments, among other topics. It will be a valuable text for faculty and students working with extremophiles and/or microbial ecology and researchers, including astrobiologists, biologists, evolutionary scientists, astronomers, geochemists and oceanographers. - Explores, in detail, how microbial ecosystems thrive in extreme environments - Highlights the relevance of extremophiles as model ecosystems to the study of microbial ecology - Examines how extreme ecosystems can help our search for life on other planets

Download or read book Acidic Pit Lakes written by Walter Geller and published by Springer Science & Business Media. This book was released on 2012-07-10 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph provides an international perspective on pit lakes in post-mining landscapes, including the problem of geogenic acidification. Much has been learned during the last decade through research and practical experience on how to mitigate or remediate the environmental problems of acidic pit lakes. In the first part of the book, general scientific issues are presented in 21 contributions from the fields of geo-environmental science, water chemistry, lake physics, lake modeling, and on the peculiar biological features that occur in the extreme habitats of acidic pit lakes. Another chapter provides an overview of methods currently used to remediate acidic pit lakes and treat outflowing acidic water. The second part of the book is a collection of regional surveys of pit lake problems from three European countries and Australia, and case studies of various individual representative lakes. A final case study provides an innovative approach to assessing the economic value of new pit lakes and balancing the costs and benefits, a valuable tool for decision makers.

Download or read book Advances in Microbial Physiology written by Robert K. Poole and published by Academic Press. This book was released on 2019-10-24 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Microbial Physiology, Volume 75, the latest release in this ongoing series, continues the long tradition of topical, important, cutting-edge reviews in microbiology. The book contains updates in the field, with comprehensive chapters covering, Sulfoxides in bacterial systems, RNA degradosomes and control by signals including c-di-GMP, Protein nanowires: biological function and synthetic constructs for 'Green' electronics, Bacterial nitrous oxide respiration: electron transport chains and copper transfer reactions, Multiple degrees of separation in the central pathways of the catabolism of aromatic compounds in Dikarya fungi, and more. - Contains contributions from leading authorities in microbial physiology - Informs and updates on all the latest developments in the field of microbial physiology