Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management: Recent submissions
Now showing items 321-340 of 519
-
Occurrence and Degradation of Estrogenic Nonylphenol and its Precursors in Northeast Kansas Wastewater Treatment Plants
(American Society of Civil Engineers, 2003)Estrogenic nonylphenol polyethoxylates (NPnEOs) constitute an important class of nonionic surfactants that find wide use in industrial and domestic cleaning products. These chemicals can undergo partial biotransformation ... -
Analytical Methods Used to Measure Endocrine Disrupting Compounds in Water
(American Society of Civil Engineers, 2003)Endocrine-disrupting compounds (EDCs) have been detected in natural waters globally. Additionally, trace concentrations of pharmaceuticals and personal care products (PPCPs) have also been detected in various waters, ... -
Occurrence and Effects of Endocrine Disrupting Chemicals in the Environment
(American Society of Civil Engineers, 2003)This review focuses on environmental chemicals that mimic the activity of the endogenous estrogen, 17β-estradiol (E2), and their effects on wildlife, because it is the most studied area of endocrine disruption. The potential ... -
Inexact Multiphase Modeling System for the Management of Subsurface Contamination under Uncertainty
(American Society of Civil Engineers, 2003)This study presents an integrated approach with multiphase modeling, factorial design, and Monte Carlo simulation by which to deal with uncertainties in the fate and transport process of petroleum contaminants in a subsurface ... -
Effect of Soil Stress on Cadmium Transport in Saturated Soils
(American Society of Civil Engineers, 2003)Prediction of the pollutant migration in complex soil systems requires an understanding of advection, dispersion, and adsorption processes. This paper focuses on the influence of the effective stress of soil on the pollutant ... -
Using the Analytic Hierarchy Process for Selecting an Appropriate Fate and Transport Model for Risk-Based Decision Making at Hazardous Waste Sites
(American Society of Civil Engineers, 2003)The management and regulation of hazardous waste sites are increasingly being carried out by assessing risks via different exposure pathways. The selection of an appropriate multimedia fate and transport for carrying out ... -
Integrated Simulation-Optimization Approach for Real-Time Dynamic Modeling and Process Control of Surfactant-Enhanced Remediation at Petroleum-Contaminated Sites
(American Society of Civil Engineers, 2003)Surfactant-enhanced remediation is an effective approach for dealing with subsurface-contaminated sites. However, in studying and controlling the related processes, difficulties exist in incorporating a complicated numerical ... -
Multicriteria Optimization for Infectious Medical Waste Collection System Planning
(American Society of Civil Engineers, 2003)An infectious waste collection system planning in Taiwan requires solving routing and scheduling problems simultaneously due to an environmental regulation. Previous work on this type of problem that considered a single ... -
Multiobjective Risk Analysis and Optimization of Regional Hazardous Waste Management System
(American Society of Civil Engineers, 2003)This paper presents a multiobjective integer goal programming model for analyzing problems involving planning and design of regional hazardous waste management systems. The proposed model can be used to select treatment ... -
Bioslurping Model for Assessing Light Hydrocarbon Recovery in Contaminated Unconfined Aquifer. II: Optimization Analysis
(American Society of Civil Engineers, 2003)The bioslurping model was successfully applied to simulate the recovery efficiency of light nonaqueous phase liquids (LNAPLs) in a companion remediation study. This paper carries out an advanced environmental systems ... -
Removal of Oil and Grease and Chemical Oxygen Demand from Oily Automotive Wastewater by Adsorption after Chemical De-emulsification
(American Society of Civil Engineers, 2003)US EPA has proposed new categorical pretreatment standards for the wastewater generated by the Metal Products and Machinery industry, which includes all automotive plants. The oil and grease (O&G) standard (17 mg/L monthly ... -
Systems Analysis of Pump-and-Treat Groundwater Remediation
(American Society of Civil Engineers, 2003)The design and operation of complex remediation projects can often benefit from an analysis from a systems perspective, that is one in which the various components of the system are viewed holistically, and a specific ... -
Geotechnical Study for Hydraulic Barrier System at Tailings Pond
(American Society of Civil Engineers, 2003)Lead–zinc tailings fall under the category of hazardous waste as per the “Hazardous Waste Management And Handling Rules” notification in India. Groundwater protection measures are to be adopted for an unlined tailings pond ... -
Adsorption–Desorption Rate of Nonpolar Volatile Organic Compounds onto Activated Carbon Exemplified by C6H6 and CCl4
(American Society of Civil Engineers, 2003)This investigation was to evaluate the performance of a thermodynamic model using nonlinear driving force in conjunction with the Langmuir model exemplified by the adsorption of benzene and carbon tetrachloride onto activated ... -
Laboratory Pilot Test of Chromium (III) Isolation from Acid Extract of Tannery Sludge
(American Society of Civil Engineers, 2003)High concentrations of Al, Fe, Ca, Mg, and Zn in the tanning agent are detrimental to the properties of tanned leather. To recycle the Cr(III) from the tannery sludge to the tanning agent, these five metals must be removed ... -
Waste Immobilization Technologies
(American Society of Civil Engineers, 2003)Waste immobilization techniques prevent the free movement of contaminants in waste. Three major types of immobilization techniques, namely, the temporary containment techniques, cost effective solidification/stabilization ... -
Numerical Simulation of Dual-Phase Vacuum Extraction to Remove Nonaqueous Phase Liquids in Subsurface
(American Society of Civil Engineers, 2003)Dual-phase vacuum extraction (DPVE) is an emerging cost-effective technology used to enhance remediation by recovering petroleum hydrocarbon from the subsurface. To improve its efficiency, insight into the complex processes ... -
Innovative Waste Containment Barriers for Subsurface Pollution Control
(American Society of Civil Engineers, 2003)Bentonite modified by cationic surfactants has been the focus of attention for engineering applications such as in horizontal cut-offs, grout mixes, cut-off slurries, soil motars, and landfill liners because of its high ... -
Stabilization/Solidification of High Mercury Wastes with Reactivated Carbon
(American Society of Civil Engineers, 2003)This paper presents the study results for a novel stabilization/solidification (S/S) process for high mercury wastes (Hg >260 ppm). In this study, a low-cost powder reactivated carbon (PAC) was used to stabilize mercury ... -
Bioslurping Model for Assessing Light Hydrocarbon Recovery in Contaminated Unconfined Aquifer. I: Simulation Analysis
(American Society of Civil Engineers, 2003)This study carries out a system-based assessment in search of the optimal operating strategy for light hydrocarbon recovery in a contaminated aquifer using bioslurping technology. A two-stage analytical framework involving ...