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Kinetics Of Trace Metals Sorption On And Desorption From Soils
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Book Synopsis Kinetics of Trace Metals Sorption on and Desorption from Soils by : Zhenqing Shi
Download or read book Kinetics of Trace Metals Sorption on and Desorption from Soils written by Zhenqing Shi and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.).
Book Synopsis Heavy Metals Release in Soils by : H. Magdi Selim
Download or read book Heavy Metals Release in Soils written by H. Magdi Selim and published by CRC Press. This book was released on 2001-06-15 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the mechanisms associated with metal complexes and the sequestering metal contaminants in the environment is essential for effective remediation. Heavy Metal Release in Soils describes and quantifies desorption/release kinetics and dissolution reactions in the release of heavy metals from soil. The book focuses on: New techniques - microscopic surface techniques, NMR and electrophoresis, XAFS, SFM, and time-resolved ATR-FTIR Theoretical analysis and kinetic approaches - adsorption/desorption hysteresis, competitive sorption and transport, multi-component models, speciation kinetics, isotherms and soil and metal parameters, and the role of soil properties on transport Applications - arsenic speciation and mobility in contaminated soils, modeling activity of CD, Zn, and Cu in contaminated soils, and in situ chemical immobilization A timely addition to the literature, this book highlights the desorption/release mechanisms for the purpose of resolving remediation dilemmas in contaminated environments. It gives you the added advantage of case studies at both the microscopic and macroscopic scales, and provides both experimental and numerical investigations. With contributions from an international panel of authors, Heavy Metals Release in Soils fills a gap in the current literature concerned with subsurface contaminant fate and transport processes.
Book Synopsis Behavior of Metals in Soils by : Joan E. McLean
Download or read book Behavior of Metals in Soils written by Joan E. McLean and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fate and Transport of Heavy Metals in the Vadose Zone by : I.K. Iskandar
Download or read book Fate and Transport of Heavy Metals in the Vadose Zone written by I.K. Iskandar and published by CRC Press. This book was released on 1999-04-23 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chapters of this book were originally presented at the Fourth International Conference on the Biogeochemistry of Trace Elements, in June 1997 at Berkeley, California. The results of that symposium are now available to assist both specialists and those concerned with broader environmental issues. The first four chapters of Fate and Transport of Heavy Metals in the Vadose Zone are devoted to sorption-desorption processes. Subjects include the kinetics of trace metal sorption-desorption, adsorption of nickel and their isotherms, cadmium reactions, and retention mechanisms of both linear and nonlinear types. The next three sections describe complexation and speciation processes. The authors consider the effect of humic and fulvic acids, the binding of copper with organic matter, and the rate of dissolved selenium. Chapters eight through eleven scrutinize the bioavailability and retention of heavy metals and their mobility in the vadose zone. Twelve details plant-available concentration levels for heavy metals in the vadose zone. The last section relates case studies that are relevant to environmental affairs. Features
Book Synopsis Reactivity and Transport of Heavy Metals in Soils by : H. Magdi Selim
Download or read book Reactivity and Transport of Heavy Metals in Soils written by H. Magdi Selim and published by CRC Press. This book was released on 1996-10-09 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fate of heavy metal particles in the environment is important because they tend to be reactive, mobile, and highly toxic. Reactivity and Transport of Heavy Metals in Soils examines the sometimes complex interactions that occur between metals and the soil they occupy. It discusses basic kinetic concepts and covers the predictability and consequences of metal-soil interactions. This practical guide presents and explains heavy metal issues crucial to hazardous waste site cleanup, including:
Book Synopsis The State of Cadmium and Zinc in Soil Inferred from Kinetic Studies of Desorption by : Joan Elizabeth McLean
Download or read book The State of Cadmium and Zinc in Soil Inferred from Kinetic Studies of Desorption written by Joan Elizabeth McLean and published by . This book was released on 1978 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Trace Elements in Waterlogged Soils and Sediments by : Jörg Rinklebe
Download or read book Trace Elements in Waterlogged Soils and Sediments written by Jörg Rinklebe and published by CRC Press. This book was released on 2016-08-19 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many wetlands around the world act as sinks for pollutants, in particular for trace elements. In comparison to terrestrial environments, wetlands are still far less studied. A collaborative effort among world experts, this book brings the current knowledge concerning trace elements in temporary waterlogged soils and sediments together. It discusses factors controlling the dynamics and release kinetics of trace elements and their underlying biogeochemical processes. It also discusses current technologies for remediating sites contaminated with trace metals, and the role of bioavailability in risk assessment and regulatory decision making. This book is intended for professionals around the world in disciplines related to contaminant bioavailability in aquatic organisms, contaminant fate and transport, remediation technologies, and risk assessment of aquatic and wetland ecosystems.
Book Synopsis Determining the Sorption-desorption Characteristics and the Fate of Sludge-borne Trace Metals Applied to Cultivated Soils by : Yingming Liang
Download or read book Determining the Sorption-desorption Characteristics and the Fate of Sludge-borne Trace Metals Applied to Cultivated Soils written by Yingming Liang and published by . This book was released on 1991 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Behavior of Metals in Soils by : Joan E. McLean
Download or read book Behavior of Metals in Soils written by Joan E. McLean and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Competitive Sorption and Transport of Heavy Metals in Soils and Geological Media by : H. Magdi Selim
Download or read book Competitive Sorption and Transport of Heavy Metals in Soils and Geological Media written by H. Magdi Selim and published by CRC Press. This book was released on 2016-04-19 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most reported incidents of soil contamination include an array of heavy metals species rather than a single ion. The various interactions in these multicomponent or multiple-ion systems significantly impact the fate and transport of heavy metals, and competition for sorption sites on soil matrix surfaces is a common phenomenon. Because of this, con
Book Synopsis Metal Speciation and Contamination of Soil by : Herbert E. Allen
Download or read book Metal Speciation and Contamination of Soil written by Herbert E. Allen and published by CRC Press. This book was released on 1994-11-29 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Speciation and Contamination of Soil provides a thorough overview of the biogeochemical processes governing the behavior, transport, and bioavailability of heavy metals in contaminated soils and suggests alternative approaches for effective remediation. This important new book contains contributions from experts in various disciplines who explore the issues from theoretical, experimental, and pragmatic perspectives. Topics include redox chemistry, kinetics of metal reactions, spectroscopic characterization of metal ion reactions at surface, modeling hydrologic transport phenomena and colloid-associated transport of metals through the soil profile to ground water, and remediation alternatives.
Book Synopsis Natural Attenuation of Trace Element Availability in Soils by : Rebecca Hamon
Download or read book Natural Attenuation of Trace Element Availability in Soils written by Rebecca Hamon and published by CRC Press. This book was released on 2006-11-16 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding attenuation processes is important not only for predicting the behavior of contaminants in soil and formulating remediation strategies, but also for mitigating and enhancing the availability of micronutrients in soil for agricultural applications. Natural Attenuation of Trace Element Availability in Soils brings together pioneering re
Book Synopsis Kinetics of Soil Chemical Processes by : Donald L. Sparks
Download or read book Kinetics of Soil Chemical Processes written by Donald L. Sparks and published by Academic Press. This book was released on 2013-10-22 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The kinetics of reactions in soil and aquatic environments is a topic of extreme importance and interest. To properly understand the fate of applied fertilizers, pesticides, and organic pollutants with time, and to thus improve nutrient availability and the quality of our groundwater, one must study kinetics. This is the first compre Demonstrates different kinetic methodologies Shows how reactions on soil and soil constituents can be measured by utilizing different techniques Describes rates and mechanisms of interactions with pesticides and organic pollutants with soil Covers the kinetics of chemical weathering Discusses how to use mathematical modeling and computer simulation to model kinetic reactions
Book Synopsis Kinetics of Metal Ion Adsorption from Aqueous Solutions by : Sotira Yiacoumi
Download or read book Kinetics of Metal Ion Adsorption from Aqueous Solutions written by Sotira Yiacoumi and published by Springer Science & Business Media. This book was released on 1995-06-30 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is intended to provide a systematic presentation of theories concerning the adsorption of metal ions from aqueous solutions onto surfaces of natural and synthetic substances and to outline methods and procedures to estimate the extent and progress ofadsorption. As heavy metals and the problems associated with their transport and distribution are of serious concern to human health and the environment, the materials presented in this volume have both theoretical and practical significance. In writing this monograph, one ofour goals was to prepare a book useful to environmental workers and practicing engineers. For this reason, our presentation relies heavily on concepts commonly used in the environmental engineering literature. In fact, the volume was prepared for readers with a basic understanding of environmental engineering principles and some knowledge of adsorption processes. No prior familiarity with the ionic solute adsorption at solid-solution interfaces is assumed. Instead, introduction of the necessary background information was included. Generally speaking, metal ion adsorption may be studied in terms of three distinct but interrelated phenomena: surface ionization, complex formation, and the formation and presence of an electrostatic double layer adjacent to adsorbent surfaces. Analyses of these phenomena with various degrees of sophistication are xviii ADSORPTION OF METAL IONS FROM AQUEOUS SOLUTIONS presented, and their various combinations yield different models that describe metal ion adsorption.
Book Synopsis Studies on the Adsorption and Desorption Behaviour of Trace Metals in Soils by : Saber Gul Khan Khattak
Download or read book Studies on the Adsorption and Desorption Behaviour of Trace Metals in Soils written by Saber Gul Khan Khattak and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biophysico-Chemical Processes of Heavy Metals and Metalloids in Soil Environments by : Antonio Violante
Download or read book Biophysico-Chemical Processes of Heavy Metals and Metalloids in Soil Environments written by Antonio Violante and published by John Wiley & Sons. This book was released on 2007-11-27 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a multidisciplinary group of soil and environmental scientists, Biophysico-Chemical Processes of Heavy Metals and Metalloids in Soil Environments provides the scientific community with a critical qualitative and quantitative review of the fundamentals of the processes of pollutants in soil environments. The book covers pollutants' speciation, mobility, bioavailability and toxicity, and impacts on development of innovative restoration strategies. In addition, the development of innovative remediation strategies for polluted soils is covered.
Book Synopsis Kinetics of Heavy Metal Transfer from Sludge to Soil by : Bahram Setoodeh
Download or read book Kinetics of Heavy Metal Transfer from Sludge to Soil written by Bahram Setoodeh and published by . This book was released on 1978 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
