Exchange Equilibria And Sorption Desorption Kinetics Of Potassium In Soils Of Varying Organic Matter Content And Soil Reaction
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Exchange Equilibria And Sorption Desorption Kinetics Of Potassium In Soils Of Varying Organic Matter Content And Soil Reaction
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Author : S.K. Saha
language : en
Publisher:
Release Date : 1982
Exchange Equilibria And Sorption Desorption Kinetics Of Potassium In Soils Of Varying Organic Matter Content And Soil Reaction written by S.K. Saha and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
Soil Physical Chemistry
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Author : Donald L. Sparks
language : en
Publisher: Springer
Release Date : 1986-03-31
Soil Physical Chemistry written by Donald L. Sparks and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-03-31 with Nature categories.
Soil Physical Chemistry, Second Edition takes up where the last edition left off. With comprehensive and contemporary discussions on equilibrium and kinetic aspects of major soil chemical process and reactions this excellent text/reference presents new chapters on precipitation/dissolution, modeling of adsorption reactions at the mineral/water interface, and the chemistry of humic substances. An emphasis is placed on understanding soil chemical reactions from a microscopic point of view and rigorous theoretical developments such as the use of modern in situ surface chemical probes such as x-ray adsorption fine structure (XAFS), Fournier transform infrared (FTIR) spectroscopies, and scanning probe microscopies (SPM) are discussed.
Extended Abstracts Fourth International Conference On The Biogeochemistry Of Trace Elements
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Author :
language : en
Publisher:
Release Date : 1997
Extended Abstracts Fourth International Conference On The Biogeochemistry Of Trace Elements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Biogeochemistry categories.
Equilibria And Kinetics Of Nonionic Organic Compound Sorption In Soil Organic Matter
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Author : Tyler Thomas Ames
language : en
Publisher:
Release Date : 1994
Equilibria And Kinetics Of Nonionic Organic Compound Sorption In Soil Organic Matter written by Tyler Thomas Ames and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Humus categories.
Kinetics Of Trace Metals Sorption On And Desorption From Soils
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Author : Zhenqing Shi
language : en
Publisher:
Release Date : 2006
Kinetics Of Trace Metals Sorption On And Desorption From Soils written by Zhenqing Shi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Chemical kinetics categories.
Understanding the kinetics of trace metals sorption and desorption on soils is important for better prediction of metal behavior in the environment. In this dissertation, the effect of solution chemistry and soil composition on trace metal sorption and desorption kinetics was investigated. Based on the experimental results, predictive kinetics models were formulated and successfully used to describe the kinetics of trace metals sorption and desorption on a variety of soils. The kinetics experiments were conducted with a stirred-flow method. A number of soil samples, which cover a wide range of soil properties from USA and European countries, were selected to test the effect of soil composition. The effects of solution chemistry, pH, metal loadings, and dissolved organic matter (DOM) concentration, were also systematically examined. Most of kinetics experiments were run with two trace metals, copper and zinc, which demonstrated very different kinetics behaviors. The solution pH has significant effect on the Cu and Zn sorption and desorption kinetics which can be accounted by the proton competition. DOM greatly enhanced Cu release but had little effect on Zn, attributed to formation of strong Cu-DOM complex decreasing the Cu ion re-adsorption on soils. Among all soil components, soil organic matter (SOM) is the dominant phase controlling Cu and Zn sorption and desorption kinetics. The effect of residence time was also tested. The kinetics models were formulated and successfully used to describe the Cu and Zn sorption and desorption kinetics under different solution chemistry and soil compositions. The models are based on the mass balance of the flow system and incorporate the chemical reactions between metals and soils. For Zn, a two-site kinetics model, including one fast and one slow site, was necessary. The soil organic carbon (SOC) is the major model parameter accounting for the effect of soil properties on Zn sorption and desorption kinetics. The organic carbon normalized sorption rate coefficients can be applied to different soils based on their SOC concentrations. One set of rate coefficients can be applied to different influent Zn concentrations, which corresponds to the linear portion of the Zn sorption isotherm. The sorption rate coefficients were dependent on solution pH which was accounted for by Zn and proton competition. The same model parameters can be applied to different flow rates. (Abstract shortened by UMI.).
Soil Physical Chemistry
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Author : Donald L. Sparks
language : en
Publisher: CRC Press
Release Date : 2018-02-06
Soil Physical Chemistry written by Donald L. Sparks and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-06 with Technology & Engineering categories.
Soil Physical Chemistry, Second Edition takes up where the last edition left off. With comprehensive and contemporary discussions on equilibrium and kinetic aspects of major soil chemical process and reactions this excellent text/reference presents new chapters on precipitation/dissolution, modeling of adsorption reactions at the mineral/water interface, and the chemistry of humic substances. An emphasis is placed on understanding soil chemical reactions from a microscopic point of view and rigorous theoretical developments such as the use of modern in situ surface chemical probes such as x-ray adsorption fine structure (XAFS), Fournier transform infrared (FTIR) spectroscopies, and scanning probe microscopies (SPM) are discussed.
Bibliography Of Doctoral Dissertations
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Author :
language : en
Publisher:
Release Date : 1987
Bibliography Of Doctoral Dissertations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Dissertations, Academic categories.
Improving Potassium Recommendations For Agricultural Crops
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Author : T. Scott Murrell
language : en
Publisher: Springer Nature
Release Date : 2020-12-14
Improving Potassium Recommendations For Agricultural Crops written by T. Scott Murrell and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-14 with Technology & Engineering categories.
This open access book highlights concepts discussed at two international conferences that brought together world-renowned scientists to advance the science of potassium (K) recommendations for crops. There was general agreement that the potassium recommendations currently in general use are oversimplified, outdated, and jeopardize soil, plant, and human health. Accordingly, this book puts forward a significantly expanded K cycle that more accurately depicts K inputs, losses and transformations in soils. This new cycle serves as both the conceptual basis for the scientific discussions in this book and a framework upon which to build future improvements. Previously used approaches are critically reviewed and assessed, not only for their relevance to future enhancements, but also for their use as metrics of sustainability. An initial effort is made to link K nutrition in crops and K nutrition in humans. The book offers an invaluable asset for graduate students, educators, industry scientists, data scientists, and advanced agronomists.
Advances In Soil Science
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Author :
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Advances In Soil Science written by and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
The world needs for food and fiber continue to increase. Population growth in the developing countries peaked at 2. 4 percent a year in 1965 and has fallen to about 2. I percent. However, in many developing countries almost half the people are under 15 years of age, poised to enter their productive and reproductive years. The challenges to produce enough food for this growing population will remain great. Even more challenging is growing the food in the areas of greatest need. Presently the world has great surpluses of food and fiber in some areas while there are devastating deficiencies in other areas. Economic conditions and the lack of suitable infrastructure for distribution all too often limit the alleviation of hunger even when there are adequate supplies, sometimes even within the country itself. World hunger can only be solved in the long run by increasing crop production in the areas where the population is growing most rapidly. This will require increased efforts of both the developed and developing countries. Much of the technology that is so successful for crop production in the developed countries cannot be utilized directly in the developing countries. Many of the principles, however, can and must be adapted to the conditions, both physical and economic, of the developing countries. This series, Advances in Soil Science.
Selected Water Resources Abstracts
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Author :
language : en
Publisher:
Release Date : 1991
Selected Water Resources Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Hydrology categories.