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Laboratory Study Evaluating Thermal Remediation Of Tetrachloroethylene Impacted Soil
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Book Synopsis Laboratory Study Evaluating Thermal Remediation of Tetrachloroethylene Impacted Soil by : Julie Marie Burghardt
Download or read book Laboratory Study Evaluating Thermal Remediation of Tetrachloroethylene Impacted Soil written by Julie Marie Burghardt and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory and Modelling Study Evaluating Thermal Remediation of Tetrachloroethene and Multi-component Napl Impacted Soil by : Chen Zhao
Download or read book Laboratory and Modelling Study Evaluating Thermal Remediation of Tetrachloroethene and Multi-component Napl Impacted Soil written by Chen Zhao and published by . This book was released on 2013 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Situ Thermal Treatment (ISTT) is a candidate remediation technology for dense non-aqueous phase liquids (DNAPLs). However, the relationships between gas production, gas flow, and contaminant mass removal during ISTT are not fully understood. A laboratory study was conducted to assess the degree of mass removal, as well as the gas generation rate and the composition of the gas phase as a function of different heating times and initial DNAPL saturations. The temperature of the contaminated soil was measured continuously using a thermocouple to identify periods of heating, co-boiling and boiling. Samples were collected from the aqueous and DNAPL phase of the condensate, as well as from the source soil, at different heating times, and analyzed by gas chromatography/mass spectrometry. In addition to laboratory experiments, a mathematical model was developed to predict the co-boiling temperature and transient composition of the gas phase during heating of a uniform source. Predictions for single-component sources matched the experiments well, with a co-boiling plateau at 88°C ± 1°C for experiments with tetrachloroethene (PCE) and water. A comparison of predicted and observed boiling behaviour showed a discrepancy at the end of the co-boiling period, with earlier temperature increases occurring in the experiments. The results of this study suggest that temperature observations related to the co-boiling period during ISTT applications may not provide a clear indication of complete NAPL mass removal, and that multi-compartment modeling associated with various NAPL saturation zones is required to consider mass-transfer limitations within the heated zone. Predictions for multi-component DNAPL, containing 1,2-Dichloroethane (1,2-DCA), PCE and Chlorobenzene, showed no co-boiling plateau. CB is the least volatile component and dominates in the vapour phase at the end of the co-boiling process, and it can be used as an indicator of the end of the co-boiling stage. Two field NAPL mixtures were simulated using the screening-level analytical model to demonstrate its potential application on ISTT. The two mixtures with similar composition but different mass fractions result in distinct co-boiling temperature and mass transfer behaviour. The non-volatile component in the NAPL mixture results in larger amounts of water consumption and longer ISTT operation time.
Book Synopsis Environmental Soil Remediation and Rehabilitation by : Eric D. van Hullebusch
Download or read book Environmental Soil Remediation and Rehabilitation written by Eric D. van Hullebusch and published by Springer Nature. This book was released on 2020-04-22 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of innovative remediation techniques and strategies for soils contaminated by heavy metals or organic compounds (e.g. petroleum hydrocarbons, NAPLs and chlorinated organic compounds). It discusses various novel chemical remediation approaches (in-situ and ex-situ) used alone and in combination with physical and/or thermal treatment. Further, it addresses the recovery of NAPLs, reuse of leaching solutions, and in-situ chemical reduction and oxidation, and explores the chemical enhancement of physical NAPLs recovery from both practical and theoretical perspectives. Also presenting the state-of-the-art in waste-assisted bioremediation to improve soil quality and the remediation of petroleum hydrocarbons, the book is a valuable resource for students, researchers and R&D professionals in industry engaged in the treatment of contaminated soils.
Book Synopsis Chlorinated Solvent Source Zone Remediation by : Bernard H. Kueper
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.
Book Synopsis An Introduction to Case Studies of Thermal Remediation of Contaminated Soil by : J. Paul Guyer, P.E., R.A.
Download or read book An Introduction to Case Studies of Thermal Remediation of Contaminated Soil written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2018-01-12 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil and geotechnical engineers and construction managers interested in remediation of contaminated soil. Here is what is discussed: 1. INTRODUCTION 2. THERMAL CONDUCTIVE HEATING 3. ELECTRICAL RESISTIVITY HEATING 4. STEAM ENHANCED EXTRACTION.
Book Synopsis An Introduction to Thermal Remediation Treatment of Contaminated Soil by : J. Paul Guyer, P.E., R.A.
Download or read book An Introduction to Thermal Remediation Treatment of Contaminated Soil written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2017-12-30 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil, geotechnical and environmental engineers interested in thermal remediation methods for treatment of contaminated soil. Here is what is discussed: 1. SITE SCREENING 2. FEASIBILITY STUDIES 3. BENCH AND PILOT SCALE STUDIES 4. TREATMENT DESIGN 5. COST AND PERFORMANCE 6. CASE STUDIES.
Book Synopsis Laboratory Study Evaluating Electrical Resistance Heating of Pooled Trichloroethylene by : Eric John Martin
Download or read book Laboratory Study Evaluating Electrical Resistance Heating of Pooled Trichloroethylene written by Eric John Martin and published by . This book was released on 2009 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: A laboratory scale study was conducted to evaluate the thermal remediation of trichloroethylene (TCE) in a saturated groundwater system using electrical resistance heating (ERH). Two experiments were conducted using a two-dimensional polycarbonate test cell, the first consisting of a single pool of TCE perched above a capillary barrier, the second consisting of two pools of TCE each perched on separate capillary barriers. Temperature data was collected during the heating process from an array of 32 thermocouples located throughout the test cell. Visualization of the vaporization of liquid phase TCE, as well as the upward migration of the produced vapour was recorded using a digital camera. Chemical testing was performed 48 hours after experiment termination to measure post heating soil concentrations. A co-boiling plateau in temperature was found to be a clear and evident earmark of an ongoing phase change in the pooled TCE. Temperature was found to increase more rapidly in the second experiment that included a fully spanning barrier. As temperatures increased above the co-boiling plateau, vapour rise originating from the source zone was observed, and was found to create a high saturation gas zone beneath the upper capillary barrier when no clear pathway was available for it to escape upwards. When the source zones had reached the target temperature of 100°C and the ERH process stopped, this high saturation gas zone condensed, leading to elevated TCE concentrations below as well as within the capillary barrier itself. The water table within the experimental cell was also noted to drop measurably when the gas zone collapsed. Post-testing chemical analysis showed reductions in TCE concentrations of over 99.04% compared to the source zone, although due to condensation of entrapped gas and convective mixing, there was a net redistribution of TCE within the experimental domain, especially within confined areas below the capillary barriers. A secondary set of experiments were conducted using a homogenous silica sand pack with no chemical contaminants to determine the effect, if any, of the wave shape of electrical input on the ERH process. It was found that in early time heating, square wave inputs consistently produced a more localized heating pattern when compared to the standard sine wave electrical input. This effect equalized between the two experiments as the ERH process went on, perhaps due to the increased dominance of conduction and convection as the mode of heat transfer in the test cell at higher temperatures. It is believed that the localization of heating in square wave experiments is due to a consistent power supply due to the lack of a sinusoidal ramping in power delivery.
Book Synopsis An Introduction to Thermal Remediation of Contaminated Soil by : J. Paul Guyer, P.E., R.A.
Download or read book An Introduction to Thermal Remediation of Contaminated Soil written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2018-01-12 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil, geotechnical and mechanical engineers interested in remediation of contaminated soil. Here is what is discussed: 1. INTRODUCTION AND OVERALL DESIGN STRATEGY 2. THERMAL CONDUCTIVE HEATING 3. ELECTRICAL RESISTIVITY HEATING 4. STEAM ENHANCED EXTRACTION 5. WASTE STREAM TREATMENT OPTIONS 6. OTHER SYSTEM CONSIDERATIONS 7. MODELING.
Book Synopsis Degradation of Tetrachloroethylene and Trichloroethylene Under Thermal Remediation Conditions by : Jed Costanza
Download or read book Degradation of Tetrachloroethylene and Trichloroethylene Under Thermal Remediation Conditions written by Jed Costanza and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal remediation involves heating subsurface environments and collecting fluids in order to recover contaminants such as tetrachloroethylene (PCE) and trichloroethylene (TCE). While increasing subsurface temperature can lead to changes in the distribution of contaminants between the solid, liquid, and gas phases, there is also an increased potential for PCE and TCE to degrade. This work was performed to determine the rate of PCE and TCE degradation and products formed in laboratory-scale experiments designed to simulate thermal remediation conditions. The conditions during transport of gas-phase TCE were simulated using flow-through experiments in the temperature range from 60 to 800C. Degradation of TCE was not evident at temperatures of less than 240C; however, chloroacetic acids, which comprised less than 0.1% of the influent TCE on a carbon basis, were detected. At temperatures greater than 300C, TCE readily degraded where the identities of the degradation products were a function of oxygen and water content. With oxygen present, TCE degraded to form CO, phosgene, CO2 with minor amounts of hexachloroethane, PCE, and carbon tetrachloride. Increasing the amount of water vapor was found to decrease the amount of TCE degraded. Vapor recovery systems used during thermal treatments are anticipated to capture these TCE degradation products. However, the amount of missing carbon ... in experiments completed at 800C makes the prospect of recovering all TCE degradation products doubtful. Experiments were conducted using hermetically sealed ampules to simulate heating dissolved phase PCE and TCE over periods of up to 75 days. At 120C, the first-order TCE degradation half-life was 330 days and the degradation products included CO and CO2, glycolate, formate, and chloride. The rate of TCE disappearance was increased with the addition of 1% (wt.) goethite, which suggests that the presence of iron bearing soil minerals can increase rates of TCE degradation during thermal treatment. In contaminated field samples, TCE was found to degrade to form cis-1,2-dichloroethylene at 95C coincident with the formation of hydrogen gas. Degradation of PCE was not evident in field samples or in deionized water and is not expected to degrade during thermal remediation at temperatures below 95C.
Book Synopsis An Introduction to Thermal Remediation of Contaminated Soil for Professional Engineers by : J. Paul Guyer, P.E., R.A.
Download or read book An Introduction to Thermal Remediation of Contaminated Soil for Professional Engineers written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2023-01-15 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil engineers, geotechnical engineers and other professional engineers and construction managers interested in thermal remediation of contaminated soils. Here is what is discussed: 1. INTRODUCTION AND OVERALL DESIGN STRATEGY, 2. THERMAL CONDUCTIVE HEATING, 3. ELECTRICAL RESISTIVITY HEATING, 4. STEAM ENHANCED EXTRACTION, 5. WASTE STREAM TREATMENT OPTIONS, 6. OTHER SYSTEM CONSIDERATIONS, 7. MODELING.
Book Synopsis A Laboratory Study of Surfactant Enhanced Remediation of Residual Tetrachloroethylene and Dodecane by : Richard C. Walker
Download or read book A Laboratory Study of Surfactant Enhanced Remediation of Residual Tetrachloroethylene and Dodecane written by Richard C. Walker and published by . This book was released on 1994 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In Situ Thermal Technologies for Site Remediation by : Robert E. Hinchee
Download or read book In Situ Thermal Technologies for Site Remediation written by Robert E. Hinchee and published by CRC Press. This book was released on 1992-11-10 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Situ Thermal Technologies for Site Remediation is a comprehensive volume covering the state-of-the-art in the field. The book begins with a basic review of the thermodynamics of heat transfer and contaminant behavior in soils and is followed by summaries of data on various soil heating technologies. Technologies covered include steam injection, radio frequency (RF), Joule resistance, passive and active solar heating, and hot gas injection. For each technology, actual applications, costs, discussions of advantages and disadvantages, and a thorough literature review are provided. In Situ Thermal Technologies for Site Remediation can help engineers in selecting and implementing the appropriate technologies for specific situations. The book will assist managers in their review and evaluation of technologies. Regulators will gain a better understanding of the applicability of available technologies after reading this volume.
Book Synopsis Remediation Technologies Screening Matrix and Reference Guide by :
Download or read book Remediation Technologies Screening Matrix and Reference Guide written by and published by . This book was released on 1994 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Bench and Pilot Studies for In Situ Thermal Remediation of Contaminated Soil by : J. Paul Guyer, P.E., R.A.
Download or read book An Introduction to Bench and Pilot Studies for In Situ Thermal Remediation of Contaminated Soil written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2018-01-12 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil and geotechnical engineers and construction managers interested in thermal remediation of contaminated soil. Here is what is discussed: 1. INTRODUCTION 2. THERMAL CONDUCTIVE HEATING 3. ELECTRICAL RESISTIVITY HEATING 4. STEAM ENHANCED EXTRACTION.
Download or read book NATO/CCMS Pilot Study written by and published by . This book was released on 2002 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Case Studies of Thermal Remediation of Contaminated Soil by : J. Paul Guyer
Download or read book An Introduction to Case Studies of Thermal Remediation of Contaminated Soil written by J. Paul Guyer and published by Independently Published. This book was released on 2018-07-07 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication provides introductory technical guidance in the form of case studies for civil engineers, environmental engineers and other professional engineers, planners and construction managers about thermal remediation of contaminated soil. Here is what is discussed: 1. INTRODUCTION, 2. THERMAL CONDUCTIVE HEATING, 3. ELECTRICAL RESISTIVITY HEATING, 4. STEAM ENHANCED EXTRACTION.
Book Synopsis An Introduction to Case Studies of Thermal Remediation of Contaminated Soil by : J. Paul Guyer
Download or read book An Introduction to Case Studies of Thermal Remediation of Contaminated Soil written by J. Paul Guyer and published by Createspace Independent Publishing Platform. This book was released on 2017-06-05 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication provides introductory technical guidance in the form of case studies for civil engineers, environmental engineers and other professional engineers, planners and construction managers about thermal remediation of contaminated soil. Here is what is discussed: 1. INTRODUCTION, 2. THERMAL CONDUCTIVE HEATING, 3. ELECTRICAL RESISTIVITY HEATING, 4. STEAM ENHANCED EXTRACTION.
