In-Situ Removal of Heavy Metals from Vadose Zone Contaminated Soils Using Enhanced Electrokinetics

EPA Contract Number: 68D60051
Title: In-Situ Removal of Heavy Metals from Vadose Zone Contaminated Soils Using Enhanced Electrokinetics
Investigators: Taylor, E. Jennings
Small Business: Faraday Technology, Inc.
EPA Contact: Manager, SBIR Program
Phase: II
Project Period: September 1, 1996 through October 1, 1998
Project Amount: $224,846
RFA: Small Business Innovation Research (SBIR) - Phase II (1996) Recipients Lists
Research Category: SBIR - Waste , Hazardous Waste/Remediation , Small Business Innovation Research (SBIR)

Description:

In Phase I program, Faraday Technology demonstrated the feasibility of a novel approach to electrokinetic cleanup of contaminated soils. Specifically, the Phase I work demonstrated that the non-uniform pH profile can be eliminated by using 1) novel electrodes, and 2) periodic reverse current electric fields. Using these innovations, they demonstrated enhanced recovery of lead and mercury from contaminated soil samples.

In Phase II, they propose to demonstrate their innovative approach to electrokinetic soil remediation on a bench scale with synthetic soil matrix and on a pilot scale with real soil samples. The Phase II program will allow them: 1) to optimize the electrode pattern for field application; 2) to optimize the periodic reverse current waveform electric fields for increasedperformance; 3) to optimize the design of the electrode for higher surface area application at lower cost; 4) to extend the feasibility studies for moving the radionuclide contaminants in vadose zone soils; and 5) to extend the feasibility studies to simulated soils containing other constituents along with heavy metal contaminants.

Supplemental Keywords:

small business, SBIR, engineering., Scientific Discipline, Water, Waste, Contaminated Sediments, Geochemistry, Environmental Engineering, Engineering, Mercury, sediment treatment, electrokinetics, in situ remediation, lead recovery, contaminated sediment, lead, soil extraction, remediation, reverse current recovery , extraction of metals, heavy metal contamination, vadose zone, heavy metals

Progress and Final Reports:

  • Final

  • SBIR Phase I:

    In-Situ Removal of Heavy Metals from Vadose Zone Contaminated Soils Using Enhanced Electrokinetics