Advances in encapsulation technologies for the management of mercury-contaminated hazardous wastes.

@article{Randall2004AdvancesIE,
  title={Advances in encapsulation technologies for the management of mercury-contaminated hazardous wastes.},
  author={P. Randall and S. Chattopadhyay},
  journal={Journal of hazardous materials},
  year={2004},
  volume={114 1-3},
  pages={
          211-23
        }
}
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 hazardous waste generation. This study was performed to evaluate whether the U.S. EPA could propose treatment and disposal alternatives to the current land disposal restriction (LDR) treatment standards for mercury. The focus… Expand
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References

SHOWING 1-10 OF 77 REFERENCES
Demonstration of New Technologies Required for the Treatment of Mixed Waste Contaminated with {ge}260 ppm Mercury
The Resource Conservation and Recovery Act (RCRA) defines several categories of mercury wastes, each of which has a defined technology or concentration-based treatment standard, or universalExpand
Full‐scale technology demonstration of a polyethylene encapsulation process for radioactive, hazardous, and mixed wastes
Abstract A full‐scale technology demonstration of a polyethylene encapsulation process, sponsored by the U.S. Department of Energy (DOE) Office of Technology Development, was held at theExpand
Polyethylene encapsulation of mixed wastes: Scale-up feasibility
A polyethylene process for the improved encapsulation of radioactive, hazardous, and mixed wastes have been developed at Brookhaven National Laboratory (BNL). Improvements in waste loading and wasteExpand
Phosphate ceramic process for macroencapsulation and stabilization of low-level debris wastes
Abstract Across the DOE complex, large quantities of contaminated debris and irradiated lead bricks have been accumulated for disposal. Under the US Environmental Protection Agency’s AlternativeExpand
Site Sampling and Treatability Studies for Demonstration of WasteChem’s Asphalt Encapsulation Technology Under EPA’s SITE Program
This paper presents a sampling approach that was used to determine whether there were adequate quantities and concentrations of wastes at the Woodland Township Route 532 Site for demonstration of theExpand
Sulfur polymer solidification/stabilization of elemental mercury waste.
TLDR
A new process to immobilize elemental mercury wastes, including those contaminated with radionuclides, in a form that is non-dispersible, will meet EPA leaching criteria, and has low mercury vapor pressure is described. Expand
Mercury stabilization in chemically bonded phosphate ceramics
We have investigated mercury stabilization in chemically bonded phosphate ceramic (CBPC) using four surrogate waste streams that represent U.S. Department of Energy (DOE) ash, soil, and two secondaryExpand
Recovery and Marine Clay Stabilization of Heavy Metals Present in Spent Hydrotreating Catalysts
This paper presents the results of an investigation on the treatment of two industrial solid wastes produced by oil refineries in Singapore, namely Ni/Mo/γAl2O3 and Co/Mo/γAl2O3. Calcination at 500°CExpand
Solidification/stabilisation of hazardous arsenic containing waste from a copper refining process
An industrial waste, originating from a metallurgical process in which copper is refined and containing large amounts of arsenic (42 wt%), was studied. A suitable treatment method,Expand
Mixed Waste Solidification Testing on Polymer and Cement-Based Waste forms in Support of Hanford's WRAP 2A Facility
A testing program has been conducted by the Westinghouse Hanford Company to confirm the baseline waste form selection for use in Waste Receiving and Processing (WRAP) Module 2A. WRAP Module 2A willExpand
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