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Effect Of Cation Exchange During Subgrade Hydration And Leachate Permeation On The Hydraulic Conductivity Of Geosynthetic Clay Liners
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Book Synopsis Effect of Cation Exchange During Subgrade Hydration and Leachate Permeation on the Hydraulic Conductivity of Geosynthetic Clay Liners by : Sabrina L. Bradshaw
Download or read book Effect of Cation Exchange During Subgrade Hydration and Leachate Permeation on the Hydraulic Conductivity of Geosynthetic Clay Liners written by Sabrina L. Bradshaw and published by . This book was released on 2008 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Leachate from Bioreactor and Recirculation Landfills on the Hydraulic Conductivity of Geosynthetic Clay Liners by : Tammy L. Rauen
Download or read book Effects of Leachate from Bioreactor and Recirculation Landfills on the Hydraulic Conductivity of Geosynthetic Clay Liners written by Tammy L. Rauen and published by . This book was released on 2007 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compatibility of Geosynthetic Clay Liners with Leachate from CCP Management Facilities by :
Download or read book Compatibility of Geosynthetic Clay Liners with Leachate from CCP Management Facilities written by and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments were conducted to evaluate whether coal combustion product (CCP) leachates adversely affect the hydraulic conductivity (K) of geosynthetic clay liners (GCLs) as an alternative material in lieu of a compacted clay liner (CCL). Chemical properties of CCP leachates were compiled based on a nationwide survey of CCP disposal facilities. Five synthetic leachates were developed to represent a range of conditions encountered in CCP disposal facilities: typical CCP leachate, strongly divalent cation fly ash leachate, flue gas desulfurization (FGD) residual leachate, high ionic strength ash leachate, and trona ash leachate. Nine GCLs were tested: two Na-bentonite (NaB) GCLs, six bentonite-polymer (P-B) GCLs, and one bentonite polymer composite (BPC). Hydraulic conductivity tests on GCLs were conducted on prehydrated (60-d on subgrade soil or DI water) and non-prehydrated GCL specimens. Tests were run to hydraulic and chemical equilibrium at effective stresses of 20 kPa, and then higher effective stresses were applied up to 450 kPa. At 20 kPa, the GCLs with NaB had high hydraulic conductivity to CCP leachates (10-10 to 10-6 m/s). Hydraulic conductivity was directly proportional to the ionic strength of the leachate and inversely proportional to the swell index of the bentonite when hydrated in leachates. The hydraulic conductivity of B-P GCLs with low polymer loading (d"1.2%) behaved similarly to NaB GCLs. However, the hydraulic conductivity of GCLs with polymer loading e"1.9 % is controlled by the clogging behavior of polymer hydrogel. Polymer elution was observed during the hydraulic conductivity tests, and increasing hydraulic conductivity was associated with cumulative polymer elution. Increasing the effective stress from 20 to 450 kPa caused the hydraulic conductivity to decrease by up to three orders of magnitude. At 450 kPa effective stress, the hydraulic conductivities of all tests were lower than 10-9 m/s except for one test with Trona leachate. This observation indicates that high effective stress can minimize the effect of CCP chemistry on the hydraulic behavior of GCLs. Subgrade hydration had no beneficial effect on hydraulic conductivity; however, prehydration with DI water can effectively protect the GCLs due to a large amount of immobile water retained in the bentonite
Book Synopsis Cation Exchange and Long-term Hydraulic Conductivity of Geosynthetic Clay Liners (GCLs) Permeated with Inorganic Salt Solutions by : Ho Young Jo
Download or read book Cation Exchange and Long-term Hydraulic Conductivity of Geosynthetic Clay Liners (GCLs) Permeated with Inorganic Salt Solutions written by Ho Young Jo and published by . This book was released on 2003 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsaturated Soils: Research & Applications by : Adrian R. Russell
Download or read book Unsaturated Soils: Research & Applications written by Adrian R. Russell and published by CRC Press. This book was released on 2020-09-24 with total page 1400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the contributions to the Second European Conference on Unsaturated Soils, E-UNSAT 2012, held in Napoli, Italy, in June 2012, and includes more than one hundred papers, addressing three thematic areas: experimental, modelling, and engineering.
Book Synopsis Effect of Cation Exchange and Desiccation on the Hydraulic Conductivity of GCLS Used in Landfill Covers - Laboratory and Field Studies by : Stephen Robert Meer
Download or read book Effect of Cation Exchange and Desiccation on the Hydraulic Conductivity of GCLS Used in Landfill Covers - Laboratory and Field Studies written by Stephen Robert Meer and published by . This book was released on 2003 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsaturated Soils: Research & Applications by : Nasser Khalili
Download or read book Unsaturated Soils: Research & Applications written by Nasser Khalili and published by CRC Press. This book was released on 2014-06-05 with total page 1872 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unsaturated Soils: Research and Applications contains 247 papers presented at 6th International Conference on Unsaturated Soils (UNSAT2014, Sydney, Australia, 2-4 July 2014). The two volumes provide an overview of recent experimental and theoretical advances in a wide variety of topics related to unsaturated soil mechanics:- Unsaturated Soil Behavi
Book Synopsis Hydraulic and Chemical Properties of Geosynthetic Clay Liners Overlain by Geomembrane in Landfill Final Covers by : Joseph Scalia
Download or read book Hydraulic and Chemical Properties of Geosynthetic Clay Liners Overlain by Geomembrane in Landfill Final Covers written by Joseph Scalia and published by . This book was released on 2009 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydraulic Conductivity of Geosynthetic Clay Liners Permeated at Elevated Temperatures by : Nimisha H. Patel
Download or read book Hydraulic Conductivity of Geosynthetic Clay Liners Permeated at Elevated Temperatures written by Nimisha H. Patel and published by . This book was released on 2005 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evolution Mechanism on Structural Characteristics of Lead-Contaminated Soil in the Solidification/Stabilization Process by : Jiang-shan Li
Download or read book Evolution Mechanism on Structural Characteristics of Lead-Contaminated Soil in the Solidification/Stabilization Process written by Jiang-shan Li and published by Springer. This book was released on 2018-09-18 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the use of Solidification/Stabilization (S/S) to treat lead-contaminated soils, which are widely present in China. It reveals the evolutionary mechanism of the structural characteristics of Pb contaminated soil during the S/S process. In addition, the book systematically analyzes laws influencing the S/S process and its internal mechanisms, and develops new models for the strength prediction and Pb leaching prediction of S/S monolith. The results can provide essential theoretical guidance and parameter-related support for the design of Pb-contamiated soil S/S remediation and recycling solutions.
Book Synopsis Multilevel Modeling of Secure Systems in QoP-ML by : Bogdan Księżopolski
Download or read book Multilevel Modeling of Secure Systems in QoP-ML written by Bogdan Księżopolski and published by CRC Press. This book was released on 2015-07-02 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing the Quality of Protection Modeling Language (QoP-ML), this book provides for the abstraction of security systems while maintaining emphasis on the details of quality protection . It delineates the steps used in cryptographic protocol and introduces a multilevel protocol analysis that expands current understanding. Every operation defined by QoP-ML is described within parameters of security metrics, therefore evaluating the impact of the operation on the entire system's security.
Book Synopsis Evaluation of the Long Term Effect of Inorganic Leachate on Geosynthetic Clay Liners by : Darwish El-Hajji
Download or read book Evaluation of the Long Term Effect of Inorganic Leachate on Geosynthetic Clay Liners written by Darwish El-Hajji and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Because of its low permeability and high swelling characteristics, bentonite is used in various hydraulic barrier systems and in the manufacturing of Geosynthetic Clay Liners (GCLs). Exposure to inorganic solutions containing elevated concentrations of electrolyte can significantly increase their permeability. To enhance the bentonite's chemical resistance to inorganic solutions, the manufacturers of GCL materials introduced propriety soluble polymeric compounds as an additive to bentonite. The resulting materials are referred to as polymer-treated, chemically-enhanced, or contaminant-resistant clays, and are arguably resistant to a host of inorganic chemicals. In this study, the response of both regular and polymer treated bentonite clays to ordinary tap water and inorganic landfill leachate is evaluated using permeability tests, index tests and x-ray diffraction. The results indicate the high dependence of performance on sample preparation techniques, pre-hydration conditions, and first wetting liquid and, to a lesser extent, polymer treatment. The x-ray diffraction results indicate that the samples reached chemical equilibrium during the permeation process, as demonstrated by a full shift in d-spacing from Na-bentonite to Ca-bentonite. Further, the results show that the cation exchange capacity, the clay plasticity ratio, and the swell index appear to be reliable indicators of the hydraulic compatibility of bentonite permeated with inorganic chemicals.
Book Synopsis Assessment of the Performance of Engineered Waste Containment Barriers by : National Research Council
Download or read book Assessment of the Performance of Engineered Waste Containment Barriers written by National Research Council and published by National Academies Press. This book was released on 2007-09-22 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: President Carter's 1980 declaration of a state of emergency at Love Canal, New York, recognized that residents' health had been affected by nearby chemical waste sites. The Resource Conservation and Recovery Act, enacted in 1976, ushered in a new era of waste management disposal designed to protect the public from harm. It required that modern waste containment systems use "engineered" barriers designed to isolate hazardous and toxic wastes and prevent them from seeping into the environment. These containment systems are now employed at thousands of waste sites around the United States, and their effectiveness must be continually monitored. Assessment of the Performance of Engineered Waste Containment Barriers assesses the performance of waste containment barriers to date. Existing data suggest that waste containment systems with liners and covers, when constructed and maintained in accordance with current regulations, are performing well thus far. However, they have not been in existence long enough to assess long-term (postclosure) performance, which may extend for hundreds of years. The book makes recommendations on how to improve future assessments and increase confidence in predictions of barrier system performance which will be of interest to policy makers, environmental interest groups, industrial waste producers, and industrial waste management industry.
Book Synopsis Hydraulic Conductivity of Prehydrated Geosynthetic Clay Liners Permeated with Calcium Chloride Solutions by : Scott M. Vasko
Download or read book Hydraulic Conductivity of Prehydrated Geosynthetic Clay Liners Permeated with Calcium Chloride Solutions written by Scott M. Vasko and published by . This book was released on 1999 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of leachates on the hydraulic conductivity of geosynthetic clay liners (GCLs) by : Janice Lee Ruhl
Download or read book Effects of leachates on the hydraulic conductivity of geosynthetic clay liners (GCLs) written by Janice Lee Ruhl and published by . This book was released on 1994 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compatibility of Geosynthetic Clay Liners (GCLs) with Multi-species Inorganic Solutions by : Dale Christian Kolstad
Download or read book Compatibility of Geosynthetic Clay Liners (GCLs) with Multi-species Inorganic Solutions written by Dale Christian Kolstad and published by . This book was released on 2000 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Initial Hydration Conditions on GCL Leachate Permeability by : L. Comeaga
Download or read book Influence of Initial Hydration Conditions on GCL Leachate Permeability written by L. Comeaga and published by . This book was released on 1997 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern landfill liners typically contain several geosynthetics and natural omponents integrated into a system whose primary function is the containment of waste and leachate. One of these hydraulic barrier components is represented by Geosynthetic Clay Liners (GCL). The GCLs are factory manufactured hydraulic barriers consisting of bentonite clay supported by geotextiles or geomembranes. Since the waterproofing function is assured by the bentonite clay it is therefore advisable to verify its chemical compatibility with the leachate and its effect upon the hydraulic conductivity value. According to the climatic situations occurring between the GCLs and waste installation, the leachate exposure moment can correspond to various GCLs hydration degrees. In this context, this paper aims at analyzing the total or partially hydrated GCL's behavior after a long time exposure to leachate. The permeability tests carried out for two needle-punched GCLs in three situations (saturated with water, water partially hydrated and saturated with leachate) show an important variation of the permeability with the hydration degree.
