Environmental Impact Assessment of Recycled Wastes on Surface and Ground Waters

Environmental Impact Assessment of Recycled Wastes on Surface and Ground Waters
Author: Tarek A. Kassim
Publisher: Springer Science & Business Media
Total Pages: 268
Release: 2005-07-20
Genre: Technology & Engineering
ISBN: 9783540235859

Volume 3: Engineering Modeling and Sustainability. This 3-volume reference presents the latest findings in impact assessment of recycled hazardous waste materials on surface and ground waters. Topics covered include chemodynamics, toxicology, modeling and information systems. The book serves as a practical guide for the monitoring, design, management, or conduct of environmental impact assessment. Each volume contains the table of contents of all volumes.

Handbook of Soil Sciences (Two Volume Set)

Handbook of Soil Sciences (Two Volume Set)
Author: Pan Ming Huang
Publisher: CRC Press
Total Pages: 2249
Release: 2018-10-03
Genre: Science
ISBN: 1439803048

An evolving, living organic/inorganic covering, soil is in dynamic equilibrium with the atmosphere above, the biosphere within, and the geology below. It acts as an anchor for roots, a purveyor of water and nutrients, a residence for a vast community of microorganisms and animals, a sanitizer of the environment, and a source of raw materials for co

Contaminants in the Subsurface

Contaminants in the Subsurface
Author: National Research Council
Publisher: National Academies Press
Total Pages: 371
Release: 2005-04-23
Genre: Science
ISBN: 030909447X

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.

A Numerical Investigation of Metabolic Reductive Dechlorination in DNAPL Source Zones

A Numerical Investigation of Metabolic Reductive Dechlorination in DNAPL Source Zones
Author: John Anthony Christ
Publisher:
Total Pages: 632
Release: 2005
Genre:
ISBN:

Among the most intractable environmental remediation problems are those involving the release of dense non-aqueous phase liquids (DNAPLs), such as chlorinated solvents, to the subsurface. Research efforts have focused on the use of numerical models to investigate reductions in contaminant concentrations due to partial mass removal and improvements in the performance of complementary source zone remediation technologies. Previous numerical investigations, however, have been limited to two-dimensional systems. Furthermore, a lack of models capable of simulating the most promising complementary technology, metabolic reductive dechlorination, has limited its application. This work developed and applied compositional multiphase numerical simulators to examine the influence of dimensionality (two-dimensions versus three-dimensions) on DNAPL source zone simulations and to investigate the benefits of stimulating metabolic reductive dechlorination at a chlorinated ethene-DNAPL contaminated site. Results from the dimensionality investigation showed that the simulation of DNAPL migration, entrapment, and dissolution in two dimensions provided reasonable approximations to the behavior simulated in three dimensions. Commonly employed saturation distribution and mass recovery metrics were approximately equivalent. Flux- averaged concentrations simulated in two dimensions, however, tended to be three to four times higher than those simulated in three dimensions. This difference was attributed to dilution at the down gradient boundary. An alternative metric, mass flux reduction, however, yielded better agreement.

Handbook of Chemical Mass Transport in the Environment

Handbook of Chemical Mass Transport in the Environment
Author: Louis J. Thibodeaux
Publisher: CRC Press
Total Pages: 636
Release: 2010-10-21
Genre: Science
ISBN: 1420047558

A comprehensive account of the state of the science of environmental mass transport Edited by Louis J. Thibodeaux and Donald Mackay, renowned experts in this field, the Handbook of Chemical Mass Transport in the Environment covers those processes which are critically important for assessing chemical fate, exposure, and risk. In a comprehensive and authoritative format, this unique handbook provides environmental chemists, geoscientists, engineers, and modelers with the essential capabilities to understand and quantify transport. In addition, it offers a one-stop resource on environmental mass transfer and mass transport coefficient estimation methods for all genres. The book begins by discussing mass transport fundamentals from an environmental perspective. It introduces the concept of mobility — key to environmental fate, since transport must occur prior to any reaction or partitioning within the natural multimedia compartments. The fugacity approach to environmental mass transfer and the conventional approach are examined. This is followed by a description of the individual mass transport processes and the appropriate flux equations required for a quantitative expression. The editors have identified 41 individual processes believed to be the most environmentally significant, which form the basis for the remainder of the book Using a consistent format for easy reference, each chapter: Introduces the specific processes Provides a detailed qualitative description Presents key theoretical mathematical formulations Describes field or laboratory measurements of transport parameters Gives data tables and algorithms for numerical estimates Offers a guide for users familiar with the process who are seeking a direct pathway to obtain the numerical coefficients Presents computed example problems, case studies and/or exercises with worked-through solutions and answers The final chapter presents the editors’ insight into future needs and emerging priorities. Accessible and relevant to a broad range of science and engineering users, this volume captures the state of the transport science and practice in this critical area.

Non-aqueous Phase Liquids (NAPLs) in Subsurface Environment

Non-aqueous Phase Liquids (NAPLs) in Subsurface Environment
Author: Lakshmi N. Reddi
Publisher:
Total Pages: 880
Release: 1996
Genre: Technology & Engineering
ISBN:

This collection contains 68 papers on contamination by nonaqueous phase liquids (NAPLs) presented at a specialty conference at the ASCE National Convention, held in Washington, D.C., November 10-14, 1996.

Chlorinated Solvent Source Zone Remediation

Chlorinated Solvent Source Zone Remediation
Author: Bernard H. Kueper
Publisher: Springer Science & Business
Total Pages: 759
Release: 2014-04-22
Genre: Technology & Engineering
ISBN: 1461469228

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.