Download or read book The Oxidation of Ferrous Iron in Natural Waters written by Thomas L. Theis and published by . This book was released on 1970 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The kinetics of the oxidation of ferrous iron in synthetic and natural waters written by W. Davison and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Generation of Reactive Oxygen Species on Oxidation of Ferrous Iron in Natural Waters written by Christopher James Miller and published by . This book was released on 2008 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aims to quantitatively describe the oxidation of ferrous iron by both dissolved oxygen and hydrogen peroxide in the presence of natural organic matter in a synthetic fresh water medium, with the widely studied Suwannee River fulvic acid used as a representative natural organic matter.

Download or read book Complexes of Ferrous Iron with Tannic Acid written by John David Hem and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Pollution Control Research Series 14010 06 69 written by United States. Federal Water Quality Administration and published by . This book was released on 1970 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Rate of Oxidation of Iron in Aerated Ground Waters written by Mrigankamouli Ghosh and published by . This book was released on 1962 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxygenation of Ferrous Iron written by Harvard University and published by . This book was released on 1970 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidation States of Iron in Natural Waters written by Steven L. Vervacke and published by . This book was released on 1979 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kinetics of Ferrous Iron Oxygenation and Redox Chemistry of Iron in Natural Waters written by Yu-Jean Liang and published by . This book was released on 1982 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Restraints on Dissolved Ferrous Iron Imposed by Bicarbonate Redox Potential and PH written by John David Hem and published by . This book was released on 1960 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Chemical Relationships Among Sulfur Species and Dissolved Ferrous Iron written by John David Hem and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biogeochemistry and Bacteriology of Ferrous Iron Oxidation in Geothermal Habitats written by Thomas D. Brock and published by . This book was released on 1976 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of hot, acid springs in Yellowstone Park has shown that high concentrations of ferrous and ferric iron are often present. Total ionic iron concentrations in different springs ranged from less than 1 ppm to greater than 200 ppm, and up to 50% of the ionic iron was in the ferrous form. Some of these springs also have high concentrations of reduced sulfur species (S2? and S0). Significant populations of the bacterium Sulfolobus, acidocaldarius, an autotrophic organism able to live and oxidize sulfur compounds at low pH and high temperature, were present in most of these springs. The role of this organism in the oxidation of ferrous iron was investigated by incubating natural samples of water and assaying for disappearance of ferrous iron. Controls in which bacterial activity was inhibited by addition of 10% NaCl were also run. Bacterial oxidation of ferrous iron occurred in most but not all of the spring waters. The temperature optimum for oxidation varied from spring to spring, but significant oxidation occurred at temperatures of 80?85°C, but not at 90°C. Thus, 85?90°C is the upper temperature at which bacterial iron oxidation occurs; a similar upper limit has previously been reported for sulfur oxidation in the same kinds of springs. The steady-state concentrations of ferrous and ferric iron are determined by the rate at which these ions move into the spring pools with the ground water (flow rate), by the rate at which ferric iron is reduced to the ferrous state by sulfide, and by the rate of bacterial oxidation. The bacterial oxidation rate is faster than the flow rate, so that the rate of reduction of ferric iron is probably the rate-controlling reaction. In several springs, no decrease in ferrous iron occurred, even though high bacterial populations were present. It was shown that in these springs, ferrous iron oxidation occurred but the ferric iron formed was reduced back to the ferrous state again. These springs were all high in suspended sediment and the reductant was shown to be present in the sediment. X-ray diffraction revealed that the sediment contained three major ingredients, elemental sulfur, natroalunite, and quartz. Chemical analyses showed a small amount of sulfide, too little to reduce the ferric iron. Elemental sulfur itself did not reduce ferric iron but when elemental sulfur was removed from the sediment by CS2 extraction, the activity of the sediment was abolished. It is hypothesized that the sulfide present in the sediment (possibly bound to natroalunite) reacts with elemental sulfur to form a reductant for ferric iron. The results show that bacteria can have a profound influence on the ferrous/ferric ratios of geothermal systems, but that temperature and mineral composition of the water may significantly influence the overall result.

Download or read book Metals in the Hydrocycle written by Wim Salomons and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Encyclopedia of Astrobiology written by Ricardo Amils and published by Springer. This book was released on 2021-01-14 with total page 1853 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interdisciplinary field of Astrobiology constitutes a joint arena where provocative discoveries are coalescing concerning, e.g. the prevalence of exoplanets, the diversity and hardiness of life, and its increasingly likely chances for its emergence. Biologists, astrophysicists, biochemists, geoscientists and space scientists share this exciting mission of revealing the origin and commonality of life in the Universe. The members of the different disciplines are used to their own terminology and technical language. In the interdisciplinary environment many terms either have redundant meanings or are completely unfamiliar to members of other disciplines. The Encyclopedia of Astrobiology serves as the key to a common understanding. Each new or experienced researcher and graduate student in adjacent fields of astrobiology will appreciate this reference work in the quest to understand the big picture. The carefully selected group of active researchers contributing to this work and the expert field editors intend for their contributions, from an internationally comprehensive perspective, to accelerate the interdisciplinary advance of astrobiology.

Download or read book Encyclopedia of Geochemistry written by C.P. Marshall and published by Springer Science & Business Media. This book was released on 1999-07-31 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a complete and authoritative reference text on an evolving field. Over 200 international scientists have written over 340 separate topics on different aspects of geochemistry including organics, trace elements, isotopes, high and low temperature geochemistry, and ore deposits, to name just a few.

Download or read book Photochemistry of Coordination Compounds written by Vincenzo Balzani and published by . This book was released on 1970 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Principles of Chemical Equilibrium written by Kenneth George Denbigh and published by Cambridge University Press. This book was released on 1981-03-26 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sample Text