The Role Of Natural Organic Matter In The Partitioning And Transport Of Polynuclear Aromatic Hydrocarbons In Groundwater
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The Role Of Natural Organic Matter Nom In The Partitioning And Transport Of Polynuclear Aromatic Hydrocarbons Pah In Groundwater
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Author : Houmao Liu
language : en
Publisher:
Release Date : 1995
The Role Of Natural Organic Matter Nom In The Partitioning And Transport Of Polynuclear Aromatic Hydrocarbons Pah In Groundwater written by Houmao Liu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
The Role Of Natural Organic Matter In The Partitioning And Transport Of Polynuclear Aromatic Hydrocarbons In Groundwater
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Author :
language : en
Publisher:
Release Date : 1990
The Role Of Natural Organic Matter In The Partitioning And Transport Of Polynuclear Aromatic Hydrocarbons In Groundwater written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
A general summary of our progress associated with batch and column experiments is included in this report. During the period of July 1, 1989 through the present, we have emphasized batch experiments to study the partitioning between one PAH, phenanthrene, and each of two sources of groundwater natural organic matter (NOM) in the presence and absence of a model mineral surface (a-Al2O3). The behavior of a soil-derived fulvic acid sorbed to the mineral surface has also been investigated. The NOM sources were used as bulk'' (unfractionated) and fractionated into different molecular weight (MW) fractions by ultrafiltration (UF), and into humic and non-humic fractions by XAD-8 resin adsorption. Three techniques have been evaluated for differentiating between aqueous PAH and NOM-bound PAH: fluorescence quenching (FQ), reverse phase (Sep-Pak) separations, and dialysis bags. We have conducted batch experiments to study the three binary systems; PAH-NOM, PAH-a-Al2O3, and NOM-a-Al2O3; and the ternary system, PAH-NOM-a-Al2O3. Sorption of NOM onto a mineral surface, alumina, has been evaluated from the perspective of providing a model of soil organic matter.
The Role Of Natural Organic Matter In Facilitated Transport And Enhanced Desorption Of Polycyclic Aromatic Hydrocarbons In Laboratory Columns Containing Aquifer Materials
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Author : Fung-Hwa Chi
language : en
Publisher:
Release Date : 1997
The Role Of Natural Organic Matter In Facilitated Transport And Enhanced Desorption Of Polycyclic Aromatic Hydrocarbons In Laboratory Columns Containing Aquifer Materials written by Fung-Hwa Chi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Groundwater categories.
Manipulation Of Groundwater Colloids For Environmental Restoration
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Author : John McCarthy
language : en
Publisher: CRC Press
Release Date : 1993-01-04
Manipulation Of Groundwater Colloids For Environmental Restoration written by John McCarthy and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-01-04 with Technology & Engineering categories.
This valuable resource discusses several strategies of manipulating colloids for environmental restoration, identifies advantages and disadvantages of each strategy, and considers obstacles limiting the application of each strategy. Approaches evaluated include the following: Chemical modification of subsurface systems to mobilize or deposit colloids in situ Altering the mobility of microorganisms to improve delivery of microbes for bioremediation Manipulating colloids or biocolloids (bacteria) to change aquifer permeability to either enhance bioremediation or create in situ barriers Introducing modified colloids, surfactants, and emulsions to control colloid mobility or to increase recovery of sorbed contaminants by pump and treat methods Manipulation of Groundwater Colloids for Environmental Restoration also contains short, focused research reports on specific studies relevant to the various approaches under consideration. Subjects covered range from mobility of organic macromolecules by controlled field injection experiments to new techniques that investigate surface chemistry and aggregation of inorganic colloids. Other topics discussed include the depositional behavior and transport of biocolloids in porous media, surfactants as modifiers of surface binding sites on colloids, and genetic engineering of microorganisms to serve as contaminant-scavenging biocolloids. Manipulation of Groundwater Colloids for Environmental Restoration is an excellent resource for research scientists in hydrology, chemistry, and microbiology; environmental consultants; regulators; environmental engineers; bioremediation microbiologists; and engineers.
Metabolism Of Polycyclic Aromatic Hydrocarbons In The Aquatic Environment
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Author : Usha Varanasi
language : en
Publisher: CRC Press
Release Date : 1989-03-31
Metabolism Of Polycyclic Aromatic Hydrocarbons In The Aquatic Environment written by Usha Varanasi and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989-03-31 with Science categories.
This book shows how the biological transport, bioaccumulation, disposition, and toxicity of polycyclic aromatic hydrocarbons (PAH) in the aquatic environment are influenced by the ability or inability of organisms to metabolize these environmental pollutants. Written by leading scientists in the fields of PAH metabolism and toxicity in both aquatic and mammalian systems, this book discusses recent advances in the areas of PAH biogeochemistry and bioaccumulation, microbial degradation, enzymes of activation, and detoxication, metabolism of PAH, and laboratory and field studies on carcinogenic/toxic effects. Additionally, important similarities and differences in metabolism of PAH by aquatic and terrestrial organisms are featured. The discussion of bioavailability, metabolism, and subsequent toxic effects should aid in the assessment of the ecological consequences of PAH in the aquatic environment.
Significance Of Chemical And Physical Characteristics Of Natural Organic Material On Partitioning Of Polycyclic Aromatic Hydrocarbons
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Author : Brett D. Welty
language : en
Publisher:
Release Date : 1998
Significance Of Chemical And Physical Characteristics Of Natural Organic Material On Partitioning Of Polycyclic Aromatic Hydrocarbons written by Brett D. Welty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Absorption categories.
Diffusion In Natural Porous Media
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Author : Peter Grathwohl
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Diffusion In Natural Porous Media written by Peter Grathwohl 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 Science categories.
Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics introduces the general principles of diffusion in the subsurface environment and discusses the implications for the fate and transport of contaminants in soils and groundwater. Emphasis is placed on sorption/desorption and the dissolution kinetics of organic contaminants, both of which are limited by the slow speed of molecular diffusion. Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics compiles methods for calculating the diffusion coefficients of organic compounds (in aqueous solution or vapor phase) in natural porous media. The author uses analytical solutions of Fick's 2nd law and some simple numerical models to model diffusive transport under various initial and boundary conditions. A number of these models may be solved using spreadsheets. The book examines sorption/desorption rates of organic compounds in various soils and aquifer materials, and also examines the dissolution kinetics of nonaqueous phase liquids in aquifers, in both the trapped residual phase and in pools. Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics concludes with a discussion of the impact of slow diffusion processes on soil and groundwater decontamination and the implications of these processes for groundwater risk assessment.
Endocrine Disrupters In Wastewater And Sludge Treatment Processes
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Author : Jason W. Birkett
language : en
Publisher: CRC Press
Release Date : 2002-11-25
Endocrine Disrupters In Wastewater And Sludge Treatment Processes written by Jason W. Birkett and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-11-25 with Science categories.
Endocrine Disrupting Chemicals (EDCs) have been shown to produce changes in the endocrine system of organisms, leading to increases in cancers and abnormalities in reproductive structure and function. This book presents research on the endocrine-disrupting effects of sewage and industrial effluents, covering the sources, fate, and transport of EDCs
Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1990
Energy Research 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 1990 with Power resources categories.
The Subsurface Partitioning And Transport Of Natural Organic Matter Nom
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Author : Chiu-Lung Eric Chu
language : en
Publisher:
Release Date : 1993
The Subsurface Partitioning And Transport Of Natural Organic Matter Nom written by Chiu-Lung Eric Chu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Groundwater categories.