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Author : Minquan Jin
Publisher :
ISBN 13 :
Total Pages : 680 pages
Book Rating : 4.:/5 (349 download)
Download or read book A study of nonaqueous phase liquid characterization and surfactant remediation written by Minquan Jin and published by . This book was released on 1995 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309065496
Total Pages : 301 pages
Book Rating : 4.3/5 (9 download)
Download or read book Groundwater and Soil Cleanup written by National Research Council and published by National Academies Press. This book was released on 1999-11-21 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive, up-to-date review of technologies for cleaning up contaminants in groundwater and soil. It provides a special focus on three classes of contaminants that have proven very difficult to treat once released to the subsurface: metals, radionuclides, and dense nonaqueous-phase liquids such as chlorinated solvents. Groundwater and Soil Cleanup was commissioned by the Department of Energy (DOE) as part of its program to clean up contamination in the nuclear weapons production complex. In addition to a review of remediation technologies, the book describes new trends in regulation of contaminated sites and assesses DOE's program for developing new subsurface cleanup technologies.
Author : Kiam Chai Ooi
Publisher :
ISBN 13 :
Total Pages : 642 pages
Book Rating : 4.:/5 (412 download)
Download or read book Laboratory evaluation of surfactant remediation of nonaqueous phase liquids written by Kiam Chai Ooi and published by . This book was released on 1998 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bernard H. Kueper
Publisher : Springer Science & Business
ISBN 13 : 1461469228
Total Pages : 759 pages
Book Rating : 4.4/5 (614 download)
Download or read book Chlorinated Solvent Source Zone Remediation written by Bernard H. Kueper and published by Springer Science & Business. This book was released on 2014-04-22 with total page 759 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to help engineers and scientists better understand dense nonaqueous phase liquid (DNAPL) contamination of groundwater and the methods and technology used for characterization and remediation. Remediation of DNAPL source zones is very difficult and controversial and must be based on state-of-the-art knowledge of the behavior (transport and fate) of nonaqueous phase liquids in the subsurface and site specific geology, chemistry and hydrology. This volume is focused on the characterization and remediation of nonaqueous phase chlorinated solvents and it is hoped that mid-level engineers and scientists will find this book helpful in understanding the current state-of-practice of DNAPL source zone management and remediation.
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 030909447X
Total Pages : 371 pages
Book Rating : 4.3/5 (9 download)
Download or read book Contaminants in the Subsurface written by National Research Council and published by National Academies Press. This book was released on 2005-04-23 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: At hundreds of thousands of commercial, industrial, and military sites across the country, subsurface materials including groundwater are contaminated with chemical waste. The last decade has seen growing interest in using aggressive source remediation technologies to remove contaminants from the subsurface, but there is limited understanding of (1) the effectiveness of these technologies and (2) the overall effect of mass removal on groundwater quality. This report reviews the suite of technologies available for source remediation and their ability to reach a variety of cleanup goals, from meeting regulatory standards for groundwater to reducing costs. The report proposes elements of a protocol for accomplishing source remediation that should enable project managers to decide whether and how to pursue source remediation at their sites.
Author : Seung-Woo Jeong
Publisher :
ISBN 13 :
Total Pages : 322 pages
Book Rating : 4.:/5 (453 download)
Download or read book Surfactant Foam-enhanced Remediation of Nonaqueous Phase Liquids (NAPLs) in Porous Media written by Seung-Woo Jeong and published by . This book was released on 1999 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D.R. Karsa
Publisher : Springer Science & Business Media
ISBN 13 : 9401113483
Total Pages : 269 pages
Book Rating : 4.4/5 (11 download)
Download or read book Biodegradability of Surfactants written by D.R. Karsa and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: The awareness and development of 'biodegradable' surfactants pre-dates current pressures by the environmental movement by nearly three decades, wherein a responsible industry mutually agreed to replace 'hard', non-biodegradable com ponents of household detergents by 'soft', biodegradable alternatives, without course to legislation. The only requirement at that time was for surfactants used in detergents to exhibit a 'primary biodegradability' in excess of 80%; this referring to the disap pearance or removal from solution of the intact surface active material as de tected by specified analytical techniques. This proved useful, as observed environmental impacts of surfactants, e.g. visible foam on rivers, are associated with the intact molecule. Test methods for 'primary biodegradability' were eventually enshrined in EU legislation for nonionic surfactants (Directive 821242/EEC, amended 73/404IEEC) and for anionic surfactants (Directive 8212431EEC, amended 73/405IEEC). No approved test methods and resultant legislation have been developed for cationic and amphoteric surfactants to date. The environmental classification of chemical substances, which of course includes surfactants, and associated risk assessment utilises a second criterion 'ready biodegradability'. This may be assessed by a number of methods which monitor oxygen uptake (BOD), carbon dioxide production or removal of dis solved organic carbon (DOC). Some surfactants which comply with the above Detergents Directive are borderline when it comes to 'ready biodegradability'.
Author : C. H. Ward
Publisher : CRC Press
ISBN 13 : 1420026208
Total Pages : 587 pages
Book Rating : 4.4/5 (2 download)
Download or read book NAPL Removal Surfactants, Foams, and Microemulsions written by C. H. Ward and published by CRC Press. This book was released on 2016-04-19 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complete and quantitative, NAPL Removal: Surfactants, Foams, and Microemulsions, belongs to a ten-monograph series that records the results of the Department of Defense/Advanced Applied Technology Demonstration Facility environmental technology demonstrations. It presents the outcome of field demonstrations of innovative in situ remediation technol
Author : Ju-Woung Yoon
Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (349 download)
Download or read book Surfactant-assisted Dense Nonaqueous Phase Liquid Remediation written by Ju-Woung Yoon and published by . This book was released on 1996 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lirong Zhong
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (435 download)
Download or read book Surfactant-enhanced Nonaqueous Phase Liquid Contaminants Removal from Liquid Saturated Media written by Lirong Zhong and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew Duffield
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (11 download)
Download or read book Surfactant Enhanced Mobilisation of Non-aqueous Phase Liquids written by Andrew Duffield and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The remediation of non-aqueous phase liquid (NAPL) using conventional aquifer treatment technologies is limited by the low solubility of NAPLs. Surfactants can promote the enhanced removal of NAPL through mobilisation, a mechanism that relies on the reduction of interfacial tension (IFT) at the flushing solution/NAPL interface. The conditions governing mobilisation can be represented by the total trapping number (N T), a dimensionless quantity relating viscous and buoyancy forces to the capillary forces trapping the NAPL residual. A highly reliable experimental apparatus and procedure were developed to study the effect of flow rate and surfactant concentration on the removal of a residual NAPL. Column studies were conducted to investigate the relative flushing efficiencies of very dilute Triton X-100 solutions delivered through Ottawa sand spiked with light white mineral oil. At the higher flow rate, the surfactant solutions yielded N T values greater than the critical N T, promoting greater NAPL recovery as IFT dropped. While NAPL removal at the lower flow rate should not be enhanced because the critical N T was not surpassed, variations in mineral oil recovery during flushing clearly indicate a surfactant effect. At the lower flow rate, the surfactant-induced enhancement and retardation of NAPI, removal both highlight the limitations of the N T approach. For more realistic systems where free product NAPL is present, the total trapping number approach requires further study to define its applicability as an indicator for NAPL mobilisation.
Author : Deepak Gupta
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (422 download)
Download or read book Dense Nonaqueous Phase Liquids written by Deepak Gupta and published by . This book was released on 1998 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Godage B. Wickramanayake
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.3/5 (91 download)
Download or read book Treating Dense Nonaqueous-phase Liquids (DNAPLs) written by Godage B. Wickramanayake and published by . This book was released on 2000 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: - DNAPL Site Characterization- DNAPL Modeling- DNAPL Remediation Technologies- DNAPLs in Fractured Media- Surfactant/Cosolvent Flushing.
Author : A. A. Balkema Publishers
Publisher : CRC Press
ISBN 13 : 1000100324
Total Pages : 579 pages
Book Rating : 4.0/5 (1 download)
Download or read book Tailings and Mine Waste 2000 written by A. A. Balkema Publishers and published by CRC Press. This book was released on 2022-05-16 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this text is to provide information on mill tailings and mine waste, and to discuss current and future issues facing the mining and environmental communities. With over 60 papers included.
Author : Brian L. Murphy
Publisher : Academic Press
ISBN 13 : 0124047076
Total Pages : 747 pages
Book Rating : 4.1/5 (24 download)
Download or read book Introduction to Environmental Forensics written by Brian L. Murphy and published by Academic Press. This book was released on 2014-07-30 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of Introduction to Environmental Forensics is a state-of-the-art reference for the practicing environmental forensics consultant, regulator, student, academic, and scientist, with topics including compound-specific isotope analysis (CSIA), advanced multivariate statistical techniques, surrogate approaches for contaminant source identification and age dating, dendroecology, hydrofracking, releases from underground storage tanks and piping, and contaminant-transport modeling for forensic applications. Recognized international forensic scientists were selected to author chapters in their specific areas of expertise and case studies are included to illustrate the application of these methods in actual environmental forensic investigations. This edition provides updates on advances in various techniques and introduces several new topics. - Provides a comprehensive review of all aspects of environmental forensics - Coverage ranges from emerging statistical methods to state-of-the-art analytical techniques, such as gas chromatography-combustion-isotope ratio mass spectrometry and polytopic vector analysis - Numerous examples and case studies are provided to illustrate the application of these forensic techniques in environmental investigations
Author : Mirrya Mosier Fontenot
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (496 download)
Download or read book Study of Transport and Dissolution of a Nonaqueous Phase Liquid in Porous Media written by Mirrya Mosier Fontenot and published by . This book was released on 2001 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transport and dissolution of residual non-aqueous phase liquids (NAPLS) trapped in water saturated porous media is a problem pertinent to both environmental and petrochemical industries. In this work we have quantitatively examined the complete dissolution of residual entrapped NAPL at the pore-scale in three dimensions using refractive index matching techniques along with planar laser induced fluorescence. The results yielded pore-scale information regarding ganglia volume, surface area, and position over time at various Capillary numbers. We found that with increasing Capillary numbers, the time for total dissolution decreased. In addition, it appears that large ganglia exhibit fractal area to volume scaling. We were also able to examine the distributions of the ganglia in the direction of flow over time. The use of low-frequency flow pulsations as a removal technique was also examined. A two dimensional micro model was used for these studies. We found that for this system, lower frequencies and higher amplitudes were more effective in NAPL removal due to breakup and mobilization. We also examined the effect of increasing amplitude and continuous versus pulsed stimulation. In addition, mass transport in the presence of a surfactant was also enhanced due to flow pulsation with lower frequencies and higher amplitudes again being most effective.
Author :
Publisher :
ISBN 13 :
Total Pages : 850 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
