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Although industrial and commercial uses of mercury have been curtailed in recent times, there is a demonstrated need for the development of reliable hazardous waste management techniques because of historic operations that have led to significant contamination and ongoing hazardo...

Ingested soil and surface dust may be important contributors to elevated blood lead (Pb) levels in children exposed to Pb contaminated environments. Mitigation strategies have typically focused on excavation and removal of the contaminated soil. However, this is not always feas...

NRMRL-ADA-01151 Wilkin*, R.T., Ford*, R., and Wallschlaeger, D. "Arsenic Transport and Fate in Sulfidic Environments: As(III) - FeS Interactions." In: Geological Society of America, Abstracts with Programs, Geological Society of America Annual Meeting, Boston, MA, 11/05-08/2001....

This broad-based study addressed three categories of issues related to the design,<br>construction, and performance of waste containment systems used at landfills, surface<br>impoundments, and waste piles, and in the remediation of contaminated sites. Geosynthetic materials have...

There are many concerns and challenges in current remediation strategies for sediments contaminated with polychlorinated biphenyls (PCBs). Our efforts have been geared toward the development of granular activated carbon (GAC) impregnated with reactive iron/palladium (Fe/Pd) bime...

ADAM is a website-based tool that targets to analyze systems-level organic waste management valorization problems. It automates the process of data extraction, mathematical modeling, problem-solving, decision-making, and result visualization. In addition, ADAM integrates a databa...

Understanding the molecular-scale complexities and interplay of chemical and biological processes of contaminants at solid, liquid, and gas interfaces is a fundamental and crucial element to enhance our understanding of anthropogenic environmental impacts. The ability to describ...

Most recently, renewed interest has arisen in manufactured silver nanoparticles because of their unusually enhanced physiochemical properties and biological activities compared to the bulk parent materials. A wide range of applications has emerged in consumer products ranging fr...

When considering potentially hazardous materials in the context of initial use, reuse, recycling, or ultimate disposal in the landscape, a crux of most decision will be understanding the cumulative contaminant exposure and risk of a given material to human health and well-being. ...

There is an urgent need for broad and integrated studies that address the risks of engineered nanomaterials (ENMs) along the different endpoints of the society, environment, and economy (SEE) complex adaptive system. This article presents an integrated science-based methodology ...

Until recently, most of energy and industrially produced chemicals were derived from fossil fuel-based resources. This along with the continued depletion of finite fossil resources and their attributed adverse environmental impacts, alternatively sourced and more sustainable reso...

Zero-valent iron nanoparticles (nZVI) have been widely tested as they are showing significant promise for environmental remediation. However, many recent studies have demonstrated that their mobility and reactivity in subsurface environments are significantly affected by their te...

The purpose of this presentation is to discuss the research drives behind Nano particles research in the environment. <B>FOR FURTHER INFORMATION, CONTACT ROGER B. YEARDLEY, JR., LAND REMEDIATION AND POLLUTION CONTROL DIVISION, AT 513-569-7548.</B>

Remediation of sediments and water contaminated hydrophobic organic chemicals (HOCs) such as polychlorinated biphenyls (PCBs) remains a scientific and technical challenge. PCBs-contaminated sediments are ubiquitous despite the production and use of PCBs was banned in 1979 due to...

The exposure of readily soluble components of overburden materials from surface coal mining to air and water results in mineral oxidation and carbonate mineral dissolution, thus increasing coal mine water conductivity. A conductivity benchmark of 300 µS/cm for mine water dischar...

Mine-impacted materials were collected from Victoria, Australia and categorized into three source materials; tailings (n = 35), calcinated (n = 10) and grey slimes (n = 5). Arsenic (As) concentrations in these materials varied over several orders of magnitude (30-47,000 mg kg<SU...

Pollution prevention through Life Cycle Assessment (LCA) is a departure from evaluating waste management options that look mainly at single issues such as recyclability or reduced toxicity. An LCA is a snapshot in time of inputs and outputs. It can be used as an objective technic...

Solid wastes produced in today’s society originate from a myriad of sources, including households, government, businesses, and industry. Current U.S. federal regulations for solid waste management have been developed to promote sound management of these wastes in a manner protect...

The United States Environmental Protection Agency (EPA) is charged by Congress with protecting the Nation's land, air, and water resources. Under a mandate of national environmental laws, the Agency strives to formulate and implement actions leading to a compatible balance betwee...

Lead (Pb) sorption onto oxide surfaces in soils may strongly influence the risk posed from incidental ingestion of Pb-contaminated soil. Lead was sorbed to model oxide minerals of corundum (α-Al<SUB>2</SUB>O<SUB>3</SUB>) and ferrihydrite (Fe<SUB>5</SUB>HO<SUB>8</SUB>•4H<SUB>2</S...

National generation estimates for seven material types in the construction and demolition debris stream are regularly published in the United States. However, the quantities of these materials in different endof- life management pathways are not published or otherwise made avai...

Mine waste rock and roaster tailings were collected from the Sulfur Bank Mercury Mine (SBMM) located in Clearlake Oaks, California. The site has been under investigation as a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) site. Leaching profiles o...

This study was undertaken as a part of developing treatment alternatives for waste materials, primarily waste rock and roaster tailings, from sites contaminated with Mercury (Hg) mining wastes. Leaching profiles of waste rock over a range of different pH and oxidation-reduction ...

This study was undertaken as a part of developing treatment alternatives for waste materials, primarily waste rock and roaster tailings, from sites contaminated with mercury (Hg) mining wastes. Leaching profiles of waste rock over a range of different pH and oxidation-reduction (...

The safe and sustainable management of electronic waste (e-waste) generated from devices (e.g., consumer electronics, solar panels) reaching their end-of-use life has become a critical global environmental health challenge. Electronic plastics pose particular challenges. There is...