| Title: |
Electrokinetic Ferric Iron Remediation and Stabilisation (FIRS) of Hexavalent Chromium Contaminated Soils: An Ex Situ Field Scale Demonstration
|
| Resource Type: |
document --> case study
|
| Country: |
United Kingdom
|
| Year: |
2009 |
| Availability: |
Research Bulletin 9 (RB9)
|
| Author 1/Producer: |
CL:AIRE - Contaminated Land Applications in Real Environments
|
| Author / Producer Type: |
Professional / trade / industry associations, institutes or networks
|
|
EUGRIS Keyword(s): |
Contaminated land-->Remediation options-->In situ treatment technologies
Sediments
|
| Short description: |
Research by staff at the University of Brighton has led to the development of a novel, low energy, natural-analogue-based, electrokinetic system called FIRS (Ferric Iron Remediation and Stabilisation).
The FIRS system applies a low magnitude direct electric potential between two or more sacrificial iron-rich electrodes placed at opposing sides of a mass of contaminated soil or sediment. The electric potential generates a strong Eh-pH gradient between the two electrodes, promotes anodic dissolution, Fe0 and Fe2+(aq) migration, and forces the precipitation of ferric iron oxyhydroxides, hematite, goethite, magnetite and zero valent iron, at near neutral pH values at the interface of the anodic and cathodic domains.
|
|
Submitted By:
|
Professor Paul Bardos WhoDoesWhat?
Last update: 23/04/2009
|
|
|
