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Surfactant Aided Remediation Of Pesticide Contamination In Soils And Transport Of Soil Colloids Within Porous Media
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Book Synopsis Surfactant-aided Remediation of Pesticide Contamination in Soils and Transport of Soil Colloids Within Porous Media by : Peng Wang
Download or read book Surfactant-aided Remediation of Pesticide Contamination in Soils and Transport of Soil Colloids Within Porous Media written by Peng Wang and published by ProQuest. This book was released on 2008 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surfactant-aided soil remediation technologies, such as surfactant-aided soil washing and in situ surfactant-enhanced sorption zone systems, have received considerable research attention recently in remediating hydrophobic organic compound (HOC) contamination. Soil particle-size dependent sorption of surfactants and its effect on HOCs partitioning within soil-water-surfactant systems, although critical in understanding the mechanisms by which the HOCs are removed by these systems, has not been studied well. This dissertation systematically investigated the sorption behavior of three surfactants with different charge properties (TritonRTM X-100 (TX), a nonionic surfactant; linear alkylbenzene sodium (LAS); benzalkonium chloride (BC), a cationic surfactant) and two HOCs, represented by the two most commonly used hydrophobic pesticides (atrazine and diuron), onto soils and soil primary size fractions (clay (2mum), silt (2 & sim;50mum), and sand (50mum) size fractions). Special attention was paid to the effect of surfactant sorption on pesticide sorption and desorption. As relevant to HOC fate and transport in soils, soil colloids transport and deposition within porous media was also examined in this study.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transport and Remediation of Subsurface Contaminants by : David A. Sabatini
Download or read book Transport and Remediation of Subsurface Contaminants written by David A. Sabatini and published by . This book was released on 1992 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transport and remediation of subsurface contaminants: introduction; Colloid deposition in porous media and an evaluation of bed-media cleaning techniques; Deposition of colloids in porous media: theory and numerical solution; Surface-charge repulsive effects on the mobility of inorganic colloids in subsurface systems; Colloid transport and the gas-water interface in porous media; Colloid remediation in groundwater by polyelectrolyte; Removal of chromate from aqueous strems by ultrafiltration and precipitation; Potential for bacterial remediation of waste sites containing selenium or lead; Heap leaching as a solvent-extraction technique for remediation of metals-contaminated soils; Factors affecting surfactant performance in groundwater remediation applicationsInfluence of surfactant sorption on capillary pressure-saturation relationships; Surfactant-enchanced solubilization of tetrachloroethylene and degradation products in pump and treat remediation; Solubilization and biodegradation of Hydrophobic organic compounds in soil-aqueous systems with nonionic surfactants; sorption of hydrophobic organic compounds and nonionic surfactants with subsurface materials; Field tests of surfactant flooding: mobility control of dense nonaqueous-phase liquids; Landfill leachate effects on transport of organic substances in aquifer materials; Clay and immiscible organic liquids: greater capillary trapping of the organic phase; Exposure assessmnet modeling for hydrocarbon spills into the subsurface: sensitivity to soil properties.
Book Synopsis Effects of Biosurfactants on Remediation of Soils Contaminated with Pesticides by : Özlem Zenginyürek
Download or read book Effects of Biosurfactants on Remediation of Soils Contaminated with Pesticides written by Özlem Zenginyürek and published by . This book was released on 2002 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pesticides have played a significant role in increasing food production, and in view of growing worldwide food demand. Nevertheless; some of them have been classified as persistent toxic chemicals. This has resulted in serious concern about environmental contamination. Once a pesticide or toxic chemical find its way in the environment, a major part of it comes in contact with soil. There are several possible sources of pesticide contamination; at manufacturing, storage, or user sites. The most serious examples of pesticide contamination are typically the result of poor production and waste management practices of pesticide manufacturing, formulation, and application facilities. Improper storage, handling, and also have resulted in pesticide contamination at these sites and at landfills. Today, many remediation technologies are used to remove the pesticides from the soil. One of the soil treatment methods is enhanced biodegradation. Bioremediation of the soil has often proven to be a cheap solution for contaminated soil problem. This research was conducted to investigate the effectiveness of biologically produced surfactants (biosurfactants) on the biodegradation of pesticide-contaminated soil and evaluate the potential for biosurfactant-enhanced bioavailability of pesticide in soil. In order to determine the effectiveness of biosurfactants on pesticides, sophorolipid and rhamnolipid type biosurfactants were used. These biosurfactants were chosen since they are well characterized and their stimulating effect on the biodegradation of hydrophobic substrates was described in the literature. In this study, endosulfan and trifluralin were selected as pesticides. The study was performed in two stages in laboratory conditions. In the first part of the experiment, degradation of endosulfan-contaminated soil was studied by the presence of sophorolipid and in the second part of the experiment; rhamnolipid (JBR 425) was used on the removal of trifluralin-contaminated soil. Throughout the experiment, three different concentrations of sophorolipid and rhamnolipid were applied to soil which, are 0.98, 9.75 and 195 ppm for sophorolipid and 1.6, 100 and 1000 ppm for rhamnolipid. The effectiveness of synthetic or microbial surfactants on biodegradation of chemicals has been investigated by many researchers. However, studies about the biosurfactant enhanced soil remediation for the pesticide contaminants are limited. Besides that, the outcome of surfactant applications has been highly system-specific, conflicting results reported in the literature. Therefore, despite the general trends outlined in literature, the effect of biosurfactants on the biodegradation of organic compounds is poorly understood. Opposed effects are frequently observed. This study is the first M.Sc. thesis study about the use of biosurfactant enhanced bioremediation of pesticides in Turkey. The results from first part of our study obtained from sophorolipid, were not satisfactory since the degradation patterns for endosulfan were not affected by the presence of sophorolipid. According to the second experiment results, removal of trifluralin ranged from 24-35 %, with the increase in rhamnolipid concentrations. Addition of rhamnolipid (JBR 425) into the soil was found to increase the degradation rate of trifluralin by 13 % as compared to the control soil column. Additional time would probably increase the rate of degradation and bioavailability, as a result of providing the adaptation of microorganisms in contaminated soil media and formation of more bioavailable metabolites.
Book Synopsis Remediation of Petroleum-contaminated Soils by : David J. Friend
Download or read book Remediation of Petroleum-contaminated Soils written by David J. Friend and published by Transportation Research Board. This book was released on 1996 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to state transportation personnel involved with project planning and location (administrative and regulatory personnel), design staff (general civil, geotechnical, and environmental engineers), and project managers (construction and maintenance engineers and staff). It will also be of interest to federal and state environmental agencies and to environmental consultants and contractors as well as to trainers in the field of petroleum-contaminated soil remediation. This synthesis describes the remedial technologies that may be available to transportation agencies faced with the regulatory responsibility to clean or remediate petroleum-contaminated soils in the vadose zone (unsaturated soils above the groundwater table) at a particular site as well as the state of the practice within the agencies. This report of the Transportation Research Board describes the applicability and cost-effectiveness of alternate technologies to remediate petroleum-contaminated soil. Practices currently being used by state transportation agencies to remediate petroleum-contaminated soils, both on site and off site are also described. This summary of transportation agency practice complements the limited telephone survey of soil remediation techniques that was performed in preparing NCHRP Report 351, Hazardous Wastes in Highway Rights-of-Way.
Book Synopsis Effects of Anionic and Nonionic Surfactant Mixtures on Bacterial Transport Through Unsaturated Porous Media by : Shweta Tripathi
Download or read book Effects of Anionic and Nonionic Surfactant Mixtures on Bacterial Transport Through Unsaturated Porous Media written by Shweta Tripathi and published by . This book was released on 2007 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: A key aspect of the contamination of groundwater by pathogenic organisms is their transport through both unsaturated and saturated soils. An important source of these pathogens is domestic wastewater, which is released to the soil environment from on-site wastewater treatment systems, such as septic tanks. Surfactants---a major component of consumer detergents---are also present in domestic wastewater and have the potential to significantly enhance the transport of microorganisms through both unsaturated and saturated soils. The goal of this study was to explore how the surfactants present in domestic wastewater effect the bacterial transport through unsaturated porous media.
Book Synopsis Surfactants and Cosolvents for NAPL Remediation A Technology Practices Manual by : Donald F. Lowe
Download or read book Surfactants and Cosolvents for NAPL Remediation A Technology Practices Manual written by Donald F. Lowe and published by CRC Press. This book was released on 1999-03-26 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: A $19.3 million Department of Defense grant to Rice University funds the Advanced Applied Technology Demonstration Facility (AATDF). One of the project goals is the development of reduction strategies for nonaqueous phase liquids (NAPLs) in the subsurface. Surfactants and Cosolvents for NAPL Remediation records the results of AATDF research. The manual is a guide to the practical application of surfactants/cosolvent for in situ remediation. It is targeted to decision makers and anyone concerned with the design or implementation of these technologies. The book discusses the situational viability of surfactants/cosolvents , the possible results, design, and operation. It includes case studies, step-by-step guidance, and project cost work sheets. The successful results of the AATDF research, as documented Surfactants and Cosolvents for NAPL Remediation, are an invaluable contribution to the future of subsurface remediation. Without source NAPL reduction, the alternative is decades of plume management through pump-and-treat.
Book Synopsis Advances in Remediation Techniques for Polluted Soils and Groundwater by : Pankaj Kumar Gupta
Download or read book Advances in Remediation Techniques for Polluted Soils and Groundwater written by Pankaj Kumar Gupta and published by Elsevier. This book was released on 2021-12-02 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Remediation Techniques for Polluted Soils and Groundwater focuses on the thematic areas for assessment, mitigation, and management of polluted sites. This book covers advances in modelling approaches, including Machine Learning (ML)/ Artificial Intelligence (AI) applications; GIS and remote sensing; sensors; impacts of climate change on geogenic contaminants; and socio-economic impacts in the poor rural and urban areas, which are lacking in a more comprehensive manner in the previous titles. This book encompasses updated information as well as future directions for researchers working in the field of management and remediation of polluted sites. Introduces fate and transport of multi-pollutants under varying subsurface conditions Details underlying mechanisms of biodegradation and biodetoxification of geogenic, industrial and emerging pollutants Presents recent advances and challenges in assessment, water quality modeling, uncertainty, and water supply management Provides authoritative contributions on the diverse aspects of management and remediation from leading experts around the world
Book Synopsis Surfactants and Their Applications for Remediation of Hydrophobic Organic Contaminants in Soils by : Roger Saint-Fort
Download or read book Surfactants and Their Applications for Remediation of Hydrophobic Organic Contaminants in Soils written by Roger Saint-Fort and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil contaminated with ubiquitous hydrophobic organic contaminants (HOCs) is a worldwide recurring concern arising from their indiscriminate disposal, improper management, and accidental spills. A wide range of traditional remedial strategies have been the common practice. However, these treatment methods have become cost prohibitive, not environmental friendly, and less accepted by society. Surfactant-enhanced remediation technology represents a cost-effective and green technology alternative to remediate such contaminated sites. Surfactant remediation technologies are conducted in-situ or ex-situ as two broad categories, or in combination. Among these technologies are soil flushing, washing, phytoremediation, and bioremediation. More applied research continues to quantify the efficiency of surfactant-enhanced mass transfer phase using a single surfactant solution while their binary blends to remove mixed HOCs in soils are also a focus of interest for research. There is a great potential to develop novel synthetic and biosurfactants that will exhibit higher biodegradability, less toxicity, higher removal efficiency, more economical and more recyclable. This work thus provides a review of the applications and importance of surfactant-enhanced remediation of soil contaminated with HOCs. Relevant environmental factors, soil properties, surfactant chemistry, mechanisms, mass transfer phase, and field designs are summarized and discussed with purposes of providing greater context and understanding of surfactant-enhanced remediation systems.
Book Synopsis Surfactants in Agrochemicals by : TharwatF. Tadros
Download or read book Surfactants in Agrochemicals written by TharwatF. Tadros and published by Routledge. This book was released on 2018-03-29 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work highlights the physical chemistry of surfactant solutions, detailing a fundamental method of selecting surfactants for agrochemical formulations and delineating how surfactants enhance the biological efficacy of agrochemicals. The unique properties of surfactants that have a major influence on the performance of an agrochemical are summarized.;The book is intended for physical, surface and colloid chemists; biochemists; microbiologists; agronomists; research and development personnel in the pesticide and fertilizer industries; and upper-level undergraduate and graduate students taking chemistry and chemical engineering courses.;College and university bookstores may order five or more copies at a special price which is available on request from Marcel Dekker Inc.
Book Synopsis Characterization and Surfactant Enhanced Remediation of Organic Contaminants in Saturated Porous Media by : Tammy Palmer Taylor
Download or read book Characterization and Surfactant Enhanced Remediation of Organic Contaminants in Saturated Porous Media written by Tammy Palmer Taylor and published by . This book was released on 1999 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1996 with total page 2372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Role of Colloidal Systems in Environmental Protection by : Monzer Fanun
Download or read book The Role of Colloidal Systems in Environmental Protection written by Monzer Fanun and published by Elsevier. This book was released on 2014-02-08 with total page 715 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Role of Colloidal Systems in Environmental Protection describes the importance of colloids in many applications that contribute to environmental protection, including drinking water and wastewater treatment, heavy metal remediation, treatment of radioactive materials, corrosion, and energy conversion. Knowledge of the physical and chemical composition of colloids is important to understand and accurately model the relevant processes. The book familiarizes the reader with the technological features of the application of colloids in environmental protection, and provides chemical engineers, researchers, and scientists in academic and corporate communities with the latest developments in this field. Each chapter covers the whole spectrum of the relevant science, from the fundamentals to applications. Provides the applied technological features of colloids in environmental protection Gives insight into the use of bio-solid colloids as contaminant carriers Covers the natural occurrence of biosurfactants in the environment and their applications Provides information on the use of nanoparticles for environmental applications Chapters written by recognized and respected experts in the field from all over the world
Book Synopsis Remediation of Contaminated Soils Using a Plant-based Surfactant by : Raghava Rao Kommalapati
Download or read book Remediation of Contaminated Soils Using a Plant-based Surfactant written by Raghava Rao Kommalapati and published by . This book was released on 1995 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Commercial Surfactants for Remediation by : Anu Singh Bisht
Download or read book Commercial Surfactants for Remediation written by Anu Singh Bisht and published by . This book was released on 2019 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book demonstrates the benefits of using commercially available surfactants, or surface-active agents, for remediation of metal-contaminated soil and sediment. First the book offers theoretical reviews of commercially available surfactants, then it proceeds to a study of various available surfactants for the mobilization of metals. Surfactants representative of amphiphiles discovered in the digestive environment of sediment-ingesting organisms are used to examine the extent and rate of metal (Al, Fe, Cd, Cu, Mn, Ni, Pb, Sn, Zn) mobilization from contaminated estuarine sediment. Metals can cause harmful effects to the environment and organisms. It is difficult to treat contaminants that are often tightly bound to the extremely small size of the estuarine sediments. The book also demonstrates the mechanisms of metal mobilization that appear to be related to complexation with monomers and adsorption to micelles of the anionic amphiphiles, and to the denudation of hydrophobic host phases or coatings on the sediment by micelles of both anionic and nonionic surfactants. Readers obtain a better understanding of current commercial surfactants, their impact on the environment, and possible remediation. This transdisciplinary book contributes toward Sustainable Development Goals numbers 6 (Clean Water and Sanitation) and 13 (Climate Action) set by the United Nations and is useful for students and teachers of sediment studies, coastal studies, environmental sciences, hydrology, civil engineering, and policy sciences.
Book Synopsis Guidance Document for the Remediation of Contaminated Soils by : New Jersey. Department of Environmental Protection and Energy
Download or read book Guidance Document for the Remediation of Contaminated Soils written by New Jersey. Department of Environmental Protection and Energy and published by . This book was released on 1994 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surfactant Assisted Bioremediation of Trichloroethylene Contaminated Soil by : Margaret Ewube Egbe
Download or read book Surfactant Assisted Bioremediation of Trichloroethylene Contaminated Soil written by Margaret Ewube Egbe and published by . This book was released on 1991 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
