Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management: Recent submissions
Now showing items 161-180 of 519
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Metals Precipitation from Effluents: Review
(American Society of Civil Engineers, 2008)At the onset of 21st century, the pollution of surface and groundwater by toxic metals continues to represent a challenge for the authorities responsible for environmental protection. The uncontrolled rejection of metals ... -
Removal and Recovery of Heavy Metals from Simulated Wastewater Using Insoluble Starch Xanthate Process
(American Society of Civil Engineers, 2008)The effectiveness of insoluble starch xanthate (ISX) for removal and recovery of heavy metals [ -
Comparison of Extractants for Removal of Lead, Zinc, and Phenanthrene from Manufactured Gas Plant Field Soil
(American Society of Civil Engineers, 2008)Polycyclic aromatic hydrocarbons (PAHs) and heavy metals found at former manufactured gas plant (MGP) sites are of major environmental concern. An investigation is made into evaluating the capability of various extractants ... -
Effects of Energy Source Concentration on Bioleaching of Heavy Metals from Undigested Sewage Sludge by Using Iron-Oxidizing Bacterium
(American Society of Civil Engineers, 2008)The objective of the present study was to optimize the energy source addition required for bioleaching of heavy metals from undigested sewage sludge after secondary treatment. Bioleaching was conducted in a batch system ... -
Could Cocropping or Successive Cropping with Cd Accumulator Oilseed Rape Reduce Cd Uptake of Sensitive Chinese Cabbage?
(American Society of Civil Engineers, 2008)Oilseed rape, a Cd accumulator, is effective in the uptake of plant available Cd from the soil. We hypothesize that the efficient removal of bioavailable Cd from soil solution by the Cd-accumulator oilseed rape ( -
Multicriteria Optimization of a Chemical Leaching Process for Sewage Sludge Decontamination
(American Society of Civil Engineers, 2008)Sewage sludge decontamination requires the removal of toxic metals and it can be performed by chemical leaching. The commercialization of such a decontamination process needs to consider the preservation of the sludge ... -
Enhancing Metal Removal by Coaddition of Fe2+ and S0 as Substrates of <i>Acidithiobacillus Ferrooxidans</i> for Sewage Sludge Bioleaching
(American Society of Civil Engineers, 2008)Bioleaching of heavy metals from sewage sludge has been shown to be a promising technique for sludge decontamination in such a complex matrix. The effect of two types of substrates ( -
Bioplastics from Waste Activated Sludge-Batch Process
(American Society of Civil Engineers, 2008)Activated sludge from a full-scale pulp-paper industry wastewater treatment plant was used as a source of microorganisms to produce biodegradable plastics (polyhydroxyalkanoates) (PHA) at -
Bioaccessibility of Chromium and Copper in Soils near CCA-Treated Wood Poles
(American Society of Civil Engineers, 2008)Because of the potentially high metal concentrations found in soils immediately adjacent to chromated copper arsenate (CCA)-treated wood structures and utility poles, CCA-contaminated soil ingestion may be a significant ... -
Effect of Bromide and Ammonia on the Formation of Ozonation and Chlorination By-Products
(American Society of Civil Engineers, 2008)The objective of this investigation was performed to assess the effects of bromide and ammonia concentrations on the formation of ozonation and chlorination by-products including bromate, trihalomethanes (THMs), and ... -
Environmental Perspectives of Microwave Applications as Remedial Alternatives: Review
(American Society of Civil Engineers, 2008)Microwave energy has been widely used in several domestic, industrial, and medical applications such as food sterilization, organic/inorganic syntheses, polymerization, dehydration, analyses and extraction, and biological ... -
Detection of Dump Carbide Using the Resistivity Image Profiling Method: Case Study
(American Society of Civil Engineers, 2008)In pace with a growing focus on environmental protection, geophysical techniques to characterize abandoned hazardous sites contribute necessary information for remediation. Study of physical property distribution in the ... -
Thickness of Compacted Natural Clay Barriers in MSW Landfills
(American Society of Civil Engineers, 2008)Natural clay deposits and compacted clay liners are used as landfill barriers; however, there is no consensus on what an appropriate thickness of the barrier ought to be, due to difficulties encountered while analyzing ... -
Chemical Oxidation of Chlorinated Solvents in Contaminated Groundwater: Review
(American Society of Civil Engineers, 2008)The groundwater contaminated with chlorinated solvents poses daunting challenges for environmental remediation. Conventional treatment technologies such as pump-and-treat and bioremediation are costly and may require lengthy ... -
Heavy Metal Fractionation and Leachability Studies on Fresh and Partially Decomposed Municipal Solid Waste
(American Society of Civil Engineers, 2008)Leaching of Cd, Cr, Cu, Pb, Ni, and Zn from fresh and partially decomposed municipal solid wastes using acid digestion (AD), multiple extraction procedure (MEP), toxicity characteristic leaching procedure (TCLP), and ... -
Relative Impact on GAC Usage Rates of Operating Strategies for Treatment of Contaminated Groundwater
(American Society of Civil Engineers, 2008)The former Nebraska Ordnance Plant has groundwater contaminated with a mixture of trichloroethylene (TCE) and the high explosive RDX that is treated in a system of eight granular activated carbon (GAC) contactors. A ... -
Particle Size Variations during Production of Wastewater Sludge-Based <i>Bacillus Thuringiensis</i> Biopesticides
(American Society of Civil Engineers, 2008)Particle size distribution studies were performed on raw, hydrolyzed, sterilized, and -
Case Studies from the United Kingdom and the United States of Stakeholder Decision Making on Radioactive Waste Management
(American Society of Civil Engineers, 2008)Case studies of stakeholders in the United Kingdom and United States are presented. Recently, the United Kingdom nuclear industry has begun to consult stakeholders more widely. Methods of engagement within the British ... -
Determination of Optimal Water Resource Management through a Fuzzy Multiobjective Programming and Genetic Algorithm: Case Study in Kinman, Taiwan
(American Society of Civil Engineers, 2008)Given the increase in demands on water resources, optimal management policy has been sought for minimum resource utilities and maximum environmental benefits. Since the water resource system is complicated and has many ... -
Development of Watershed Management Strategies for the Chiang-Chun River Basin, Taiwan
(American Society of Civil Engineers, 2008)The Chiang-Chun River basin is the largest and the most intensively used river basin in Tainan County, Taiwan. Based on the recent water quality analysis, the Chiang-Chun River is heavily polluted. Concern about the ...