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Superfund Innovative Technology Evaluation (SITE)

 EPA/540/R-94/522

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

  Dynaphore, Inc. Forager™ Sponge Technology Innovative Technology Evaluation Report
June 1995
Capsule (540/R-94/522a)

Dynaphore, Inc.'s ForagerT Sponge is a volume reduction technology in which heavy metal contaminants from an aqueous medium are selectively concentrated into a smaller volume for facilitated disposal. The technology is applicable to the treatment of contaminated groundwater, surface waters and process waters by absorbing dissolved ionic species onto a sponge matrix. The sponge matrix can be directly disposed, or regenerated with chemical solutions. The Sponge can remove toxic heavy metals from waters in the presence of high concentrations of innocuous, naturally occurring dissolved inorganic species. The ForagerT Sponge process was evaluated under the SITE Program in April 1994, at the NL Industries, Inc. Superfund Site in Pedricktown, New Jersey. The demonstration focused on the system's ability to remove lead, cadmium, chromium, and copper from contaminated groundwater at this former secondary lead smelting facility. The results from the demonstration indicated that cadmium was reduced by 90%, copper reduced by 97%, lead reduced by 97% and chromium reduced by 32%. The removal of heavy metals proceeded in the presence of significantly higher concentrations of innocuous cations such as calcium, magnesium, sodium, potassium, and aluminum.

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