Effects of Water Content and Soil Structure on Colloid Transport in Porous Media PDF Download
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Author: Marlene Ullum
Publisher:
ISBN:
Category : Colloids
Languages : da
Pages : 324
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Book Description
Author: Marlene Ullum
Publisher:
ISBN:
Category : Colloids
Languages : da
Pages : 324
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Book Description
Author: Fritz H. Frimmel
Publisher: Springer Science & Business Media
ISBN: 3540713395
Category : Science
Languages : en
Pages : 294
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Book Description
This book covers the basics of abiotic colloid characterization, of biocolloids and biofilms, the resulting transport phenomena and their engineering aspects. The contributors comprise an international group of leading specialists devoted to colloidal sciences. The contributions include theoretical considerations, results from model experiments, and field studies. The information provided here will benefit students and scientists interested in the analytical, chemical, microbiological, geological and hydrological aspects of material transport in aquatic systems and soils.
Author: Maureen Anne McGraw
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: Maureen Anne McGraw
Publisher:
ISBN:
Category :
Languages : en
Pages : 400
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Book Description
Author: Poul L. Bjerg
Publisher: CRC Press
ISBN: 1000100340
Category : Technology & Engineering
Languages : en
Pages : 547
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Book Description
These proceedings, with cd-rom, present a comprehensive overview of advances in groundwater research. The five main topics covered are: aquifers and contaminant distribution; groundwater quality; natural attenuation; remediation technologies and groundwater protection. Groundwater 2000 is a useful resource to both scientists and to those working in the field.
Author: John McCarthy
Publisher: CRC Press
ISBN: 9780873718288
Category : Technology & Engineering
Languages : en
Pages : 412
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Book Description
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.
Author: Xinyao Yang
Publisher: LAP Lambert Academic Publishing
ISBN: 9783847377405
Category : Attenuation (Physics)
Languages : en
Pages : 244
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Book Description
Colloids refer to particles or macromolecules with at least one dimension of 1nm 1m. A wide range of environmental particles fall within this category including microorganisms, nanoparticles, and mineral precipitates. Understanding colloid fate and transport in porous medium not only permits more effective protection of water supplies, but also allows for the development of more effective pollutant remediation strategies. Organic matter (OM) complicates colloid behaviour. To date the influence of OM on colloid mobility in porous media has been largely qualitative. This book presents research leading to the development of multiple-pulse column techniques that may be integrated with mathematical models to quantify the effects of OM on particulate colloid attenuation in saturated porous medium. Research has investigated how two groups of environmental organic compounds, humic acids and proteins, influence particulate colloid attenuation by saturated sand. Study findings may shed light on complex colloidal behaviour in organic matter impacted environment and be useful to professionals in contaminant hydrogeology, environmental remediation, and wastewater treatment.
Author: Mohammad Albaji
Publisher: CRC Press
ISBN: 1000090841
Category : Technology & Engineering
Languages : en
Pages : 310
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Book Description
The Handbook of Irrigation System Selection for Semi-Arid Regions compares the various types of available irrigation systems for different regions and conditions, and explains how to analyze field data to determine the suitability of the land for surface, sprinkle, or drip irrigation systems. The book focuses on strategies for irrigation development and management and examines deficit irrigation and partial root-zone drying systems. Also, solute leaching modeling under different irrigation systems, soil moisture conditions, and organic fertilizer application in arid areas are discussed. Further, it examines multi-criteria decision making for irrigation management and the appraisal of agricultural lands for irrigation in hot, sub-humid regions. Features: Presents comparative analysis to aid in the selection of the most appropriate types of irrigation systems according to land characteristics. Includes numerous practical case studies. Offers parametric evaluation systems for irrigation purposes. Considers data from semi-arid zones, each with different sub-climates. Focusing on semi-arid land, the book highlights parametric evaluation systems for irrigation purposes, along with the use of analytical hierarchy processes integrated with GIS to determine which systems are best suited. This comprehensive and well-illustrated handbook will be of great interest to students, professionals, and researchers involved with all aspects of irrigation in semi-arid regions.
Author: John T. Crist
Publisher:
ISBN:
Category :
Languages : en
Pages : 154
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Book Description
![Impact of Water Chemistry (pH and Inoic [i.e. Ionic] Strength) on Colloid Transport Through Porous Medium PDF](https://books.google.com/books/content/images/frontcover/4iFsnQAACAAJ?fife=w80-h100)
Author: Sandip Raman Patil
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
ABSTRACT: Colloid transport is believed to be controlled by their interactions with the porous media. The dominating forces are the electrostatic interactions that are determined by colloid surface charge density. Although it is well accepted that electrostatic interactions between colloids and the surrounding environment play a very important role in controlling colloid retention in porous media, it is not clear how pH and ionic strength impact the electrostatic forces and the subsequent colloid transport. To have a better understanding of the impact, column colloid transport experiments were conducted under variable pH and ionic strength conditions. Based on the column experiments, colloid deposition and transport were quantified using the advection-dispersion equation and linked to solution pH and ionic strength. Finally, the repulsive electrostatic interactions between the colloids and the sediments were evaluated for different pH and ionic strength conditions, which were related to colloid transport observations. Results of this research are of importance to advancing the understanding of colloid facilitated heavy metal and organic contaminant transport in the subsurface.
