Electrodialytic soil remediation: Principle, changes in the soil system, and optimising the remediation process

Bodil Karlsmose, Lisbeth M. Ottosen, Lene Hansen, Henrik K. Hansen, Anne Juul Pedersen, Iben Vernegren Kristensen, Alexandra J. B. Ribeiro, Gregers Bech-Nielsen, Arne Villumsen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The paper gives an overview of how heavy metals can be found in the soil and the theory of electrodialytic remediation. Basically electrodialytic remediation works by passing electric current through the soil, and the heavy metals in ionic form will carry some of the current. Ion-exchange membranes prevents the protons and the hydroxides ions from the electrode processes to enter the soil. The heavy metals are collected in a concentration compartment, which is separated from the soil by ion-exchange membranes. Examples from remediation experiments are shown, and it is demonstrated that it is possible to remediate soil polluted with heavy metals be this method. When adding desorbing agents or complexing agents, chosing the right current density, electrolyte and membranes, the proces can be optimised for a given remediation situation. Also electroosmosis is influencing the system, and if extra water is not added, the soil can be dewatered because of this effect.
Original languageEnglish
Title of host publicationHeavy Metals in the Environment and Electromigration Applied to Soil Remediation
Place of PublicationLyngby
PublisherTechnical University of Denmark, Environmental Electrochemistry
Publication date1999
Pages81-89
ISBN (Print)87-987461-0-3
Publication statusPublished - 1999
EventSymposium on Heavy Metals in the Environment and Electromigration Applied to Soil Remediation - Lyngby
Duration: 1 Jan 1999 → …
Conference number: 2

Conference

ConferenceSymposium on Heavy Metals in the Environment and Electromigration Applied to Soil Remediation
Number2
CityLyngby
Period01/01/1999 → …

Fingerprint Dive into the research topics of 'Electrodialytic soil remediation: Principle, changes in the soil system, and optimising the remediation process'. Together they form a unique fingerprint.

Cite this