Author: Vivek JainPublisher:
ISBN:
Category :
Languages : en
Pages : 460
Book Description
Hydraulic Conductivity Reduction in Surfactant-enhanced Aquifer Remediation Due to Emulsification
Author: Vivek JainSurfactant-enhanced Subsurface Remediation
Author: David A. SabatiniPublisher:
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 320
Book Description
Provides a timely and thorough review of surfactant-based remediation technologies. Covers fundamental mechanistic studies to scale-up and process modeling and full-scale field implementation studies. Summarizes the technical, economic, and sociopolitical issues affecting widespread implementation of these technologies. Includes contributions from academic and industrial researchers as well as regulatory personnel.
Surfactants and Cosolvents for NAPL Remediation A Technology Practices Manual
Author: Donald F. LowePublisher: CRC Press
ISBN: 9780849341175
Category : Science
Languages : en
Pages : 444
Book Description
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.
Surfactant-enhanced DNAPL Remediation
Author: David A. SabatiniPublisher:
ISBN:
Category : Dense nonaqueous phase liquids
Languages : en
Pages : 18
Book Description
Surfactant Enhanced Aquifer Remediation of a DNAPL Site, Portsmouth, Ohio
Author: Nichole L. CaseSurfactant Enhancements
Author: Publisher:
ISBN:
Category : Hazardous waste site remediation
Languages : en
Pages : 36
Book Description
American Doctoral Dissertations
Author: Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 848
Book Description
Hydraulic Response to Emulsified Vegetable Oil Biostimulations
Author: Benjamin Gregory AdamsPublisher:
ISBN:
Category : Aquifers
Languages : en
Pages : 0
Book Description
The purpose of this study was to determine if the injection of emulsified vegetable oil (EVO) to remediate a uranium-contaminated aquifer can result in a reduction in hydraulic conductivity. The secondary purpose was to determine if there was evidence of a “memory effect,” a phenomenon where the second time an electron donor is injected, the environment responds to it faster. This has been observed at many remediation sites. A previously treated (2009) uranium contaminated aquifer at Y-12 National Security Complex located in Oak Ridge, Tennessee, was injected with EVO to determine whether hydraulic conductivity changes and to assess the effectiveness of EVO treatment for reducing dissolved uranium. Acetate was monitored in downgradient wells as an indicator of biodegradation. On December 13, 2017, a 20% EVO and groundwater mixture was injected within the Y-12 FRC Area 2 site. Periodic measurements of hydraulic conductivity and dissolved uranium concentration were taken from a control wells, three injection wells, and four down-gradient wells for 134 days. During the experiment, hydraulic conductivity in the injection wells decreased by up to two orders of magnitude but only up to one order of magnitude in half of the down-gradient monitoring wells located 2.5 to 11 m away. Dissolved uranium concentrations significantly decreased in the injection wells, but not in the monitoring well directly down-gradient of injection because dissolved uranium concentrations increased by day 78 and surpassed pre-injection concentrations due to oxidation of reduced uranium in those wells. Acetate concentrations indicated an accelerated response to EVO compared to the 2009 study results. However, this was the only evidence of “memory response.” The results of this study show that injecting EVO can have unintended consequences related to hydraulic conductivity, which can reduce EVO effectiveness or even cause bioremediation using EVO to fail. The effects of EVO interacting with aquifer media and injection well spacing should be carefully considered to minimize changes in preferential flow, limit oxidation of reduced uranium, and maximize the effectiveness of the treatment.
Initial Experiments to Demonstrate the Viability of Surfactant Enhanced Aquifer Remediation of LNAPL from a Jamestown, New York Aquifer
Author: Randy IrwinDelivery and Mixing in the Subsurface
Author: Peter K. KitanidisPublisher: Springer Science & Business Media
ISBN: 1461422396
Category : Technology & Engineering
Languages : en
Pages : 351
Book Description
This volume is meant to provide the practitioner with information on the natural mixing processes occurring in aquifers as well as to describe basic strategies that can be implemented to enhance mixing in particular cases. For example, when it comes to mixing miscible liquids, one can speed up mixing in the formation by manipulating the flow such as through the use of recirculation wells. Furthermore, much of the mixing can be achieved partially within recirculation wells themselves, where contaminated water is admixed with additives, volatile products may be removed through a vapor mass exchanger, etc. Thus, adding mixing wells can significantly increase the performance of the delivery and mixing system and speed up the process of remediation.