Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management: Recent submissions
Now showing items 101-120 of 519
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Application of a Mass Balance-Based Stochastic Transport Model
(American Society of Civil Engineers, 2010)The definition of contaminant source release is a necessary element of contaminant mass transport simulation in the saturated zone. At many sites the release history is unknown, and there has been a significant body of ... -
Impact of Heterogeneity on Gamma-Spectrometry Data at Nondestructive Assay of Radioactive Waste
(American Society of Civil Engineers, 2010)The uncertainty of the direct gamma-spectrometry method at a nondestructive assay of radioactive wastes is considered by taking into account the heterogeneity (over the container’s volume) of the activity and of the ... -
Water Quality Modeling of a Hypoxic Stream
(American Society of Civil Engineers, 2010)The WASP/EUTRO model was used to model a low dissolved oxygen (DO) stream in Taiwan as part of the water quality management effort to restore the stream. The low DO is the result of industrial wastewater discharges causing ... -
Removal of Selected Toxic Metals by a Modified Adsorbent
(American Society of Civil Engineers, 2010)A modified method was used to increase the adsorption of heavy metals from aqueous solutions by using sawdust. Sawdust was collected from waste timber industry and modified with different tartaric acid concentrations (0.1 ... -
Treatment of Arsenic-Laden Water Plant Sludge by Anaerobic Digestion
(American Society of Civil Engineers, 2010)Coprecipitation of arsenic by alum or iron salts produces a large quantity of arsenic-laden sludge (an average of -
Insight into Nitrous Oxide Emissions from Biological Wastewater Treatment and Biosolids Disposal
(American Society of Civil Engineers, 2010)All degradable organic materials are decomposed by microorganisms, and considerable amounts of nitrogen end up as gaseous metabolites. No matter what procedure is chosen for getting rid of organic wastes (wastewater ... -
Ecological Corridor in the Urban Area: Case Study in Kaohsiung City, Taiwan
(American Society of Civil Engineers, 2010)The transition from an agricultural based society to an industrial and commercial based society resulted in urbanization in the case of Kaohsiung City. However, in accordance with development, the parks, the green spaces, ... -
Emerging Contaminants of Environmental Concern: Source, Transport, Fate, and Treatment
(American Society of Civil Engineers, 2010)Emerging contaminants (ECs) have been wildly distributed in the environment and attracted increasing attention over the past decades. In this paper, the contaminants including pharmaceuticals and personal care products, ... -
Beneficial Properties of Coal Ashes and Effective Solid Waste Management
(American Society of Civil Engineers, 2009)Large quantities of coal ashes are being produced by coal fired thermal power plants all over the world. Because of some of their inherent properties, the coal ashes are proving to be potential hazardous materials causing ... -
Improved Model Applying the 6-Sigma Methodology to Evaluate Leaking Water Faucets
(American Society of Civil Engineers, 2009)Increasing population and advancing technology have been continually consuming natural resources to cause global warming and depletion of water resources. How to raise the efficiency and eliminate unnecessary wastes will ... -
Multicomponent Sorption of Pyridine and Its Derivatives from Aqueous Solution onto Rice Husk Ash and Granular Activated Carbon
(American Society of Civil Engineers, 2009)The present paper deals with the simultaneous removal of Pyridine (Py), -
Efficient Microwave Technology to Immobilize Heavy Metal Copper (Cu) Contaminated Soil by Microwave Energy
(American Society of Civil Engineers, 2010)Using Cu with concentrations up to 250 mg/kg coupled with microwave (MW) irradiation is effective in immobilizing the Cu in both vitrified and nonvitrified soils. Applying 1,080–2,430 kJ MW energy will effectively lower ... -
Case Study of Distributed Hydrologic Model for Soil and Nutrient Loss Estimation in Small Watershed
(American Society of Civil Engineers, 2010)In this paper, the soil erosion and nutrient loss from a watershed nonpoint source was studied as a system. First, a digital watershed, a hydrological process within a unit, as well as the process of convergence were ... -
Turbidity Removal Efficiency of Biocoagulant and Verifications of Its Biological Safety
(American Society of Civil Engineers, 2009)The chitosan-based biocoagulant was developed and applied to reduce the turbidity of superturbid drinking water. After a serial experiment on jar tester and a continuous flow pilot plant it was concluded that the residual ... -
Biosorptive Color Removal: Applicability of Equilibrium Isotherm Models
(American Society of Civil Engineers, 2010)Models describing adsorption equilibrium have not been derived for the sorption onto the biosorbents including both virgin and immobilized biomasses. Biosorption involves interaction of biopolymer-based surfaces with ... -
Development of a Practical Method for the Estimation of Maximum Lateral Displacement in Large Landfills
(American Society of Civil Engineers, 2010)An extensive database of mechanical properties of municipal solid waste (MSW) is available as a result of significant advances made in the past few years in terms of understanding its mechanical behavior. It is, however, ... -
Health-Risk-Based Remedial Alternatives for Contaminated Aquifer Management
(American Society of Civil Engineers, 2010)In the risk-based management approach, the risks associated with human health and the environment in a contaminated site are evaluated and corrective measures are undertaken to reduce the risk level to acceptable limits. ... -
SCIA: GIS-Based Software for Assessing the Impacts from Chemical Industrial Accidents
(American Society of Civil Engineers, 2010)This study is performed to develop a comprehensive software package entitled “simulation of chemical industrial accident (SCIA).” The SCIA can be integrated with geographical information system (GIS) to predict and display ... -
Adsorption of RDX and its Nitroso Metabolites onto Activated Carbon
(American Society of Civil Engineers, 2010)Groundwater contaminated with the high explosive Demolition eXplosive, or hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) may also contain the nitroso-RDX metabolites hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX), ... -
Properties of Thermoplastics Reinforced with Foundry Sand Waste
(American Society of Civil Engineers, 2009)Thermoplastic rejects are unrecyclable plastics that are often burned causing harmful emissions. Foundry sand waste is a hazardous waste that poses significant health risks. This paper investigates the mechanical and ...