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Simultaneous Extraction of Anionic and Cationic Metal Contaminants at Superfund Sites

EPA Contract Number: 68D50074
Title: Simultaneous Extraction of Anionic and Cationic Metal Contaminants at Superfund Sites
Investigators: Gleason, Kevin
Small Business: TDA Research Inc.
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: September 1, 1995 through March 1, 1996
Project Amount: $65,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1995)
Research Category: Hazardous Waste/Remediation , SBIR - Remediation

Description:

Soils and groundwater contaminated with heavy metals are serious environmental problems. More than 70% of 358 Superfund hazardous waste dump sites are contaminated with zinc, while chromium, copper, and lead are found in more than 50% of these sites. The environmental remediation processes used to clean up metal contaminated sites generally produce large volumes of water contaminated with low concentrations of metals. the well established processes used to precipitate metals and reduce them it non-hazardous solids are relative inexpensive when carried out on concentrated wastewaters. However, these same processes can be prohibitively expensive if applied to large volumes containing dilute metals as well as other pollutants. Thus, there is a need for a process that inexpensively removes the metals from pump-and-treat or soil washing water and concentrates them for ultimate reduction and disposal. Therefore, TDA Research proposed to develop an emulsion liquid membrane process capable of simultaneously extracting heavy metal anions and cations from dilute, complex contaminated streams and concentrating the metal species for subsequent treatment and disposal.

Supplemental Keywords:

small business, SBIR, engineering, chemistry. , Toxics, Water, Scientific Discipline, Waste, RFA, Analytical Chemistry, Hazardous Waste, Environmental Engineering, Environmental Chemistry, Chemistry and Materials Science, Contaminated Sediments, Hazardous, 33/50, heavy metal contamination, heavy metals, remediation, chromium & chromium compounds, extraction of metals, soil and groundwater remediation, contaminated waste sites, Superfund sites, hazardous waste sites, metal release, contaminated sediment, emulsion liquid membrane, Superfund site remediation, lead & lead compounds, metal contamination, metals, contaminated soil, cleanup, groundwater remediation, hazardous waste site, hazardous waste treatment, hazardous chemicals, soil extraction

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The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

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