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 (1996) RFA Text |  Recipients Lists
Research Category: SBIR - Waste , Hazardous Waste/Remediation , Small Business Innovation Research (SBIR)


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

Progress and Final Reports:

  • Final