Contaminant Extractability by Electrokinetics

Yeung, Albert T.
January 2006
Environmental Engineering Science;Jan2006, Vol. 23 Issue 1, p202
Academic Journal
Electrokinetic extraction is an emerging technology that has shown considerable potential for efficient and effective removal of both inorganic and organic contaminants from fine-grained soils of low hydraulic conductivity and large specific area when conditions are favorable. The cleanup technology is basically the application of a direct-current electric field across contaminated soils through electrodes installed in the subsurface. The contaminant is removed by (1) electro-osmotic advection of pore fluid flushing the contaminants; (2) ionic migration or electromigration of contaminants carrying charges; and (3) electrophoresis of charged colloidal-sized particles carrying contaminants. However, many complicated electrochemical phenomena that can change the electrokinetic properties of soil particles and the chemistry of pore fluid occur simultaneously. The resulting soil–chemical interactions may enhance or inhibit the extractability of contaminants by electrokinetics, as various electrochemical processes are dynamic, reversible, and interdependent. The impacts of these phenomena on contaminant extractability by electrokinetics are discussed in this paper. A comprehensive list of useful references on electrokinetic extraction is also included for use by readers interested in the subject.


Related Articles

  • Separation processes based primarily on action in an electric field. Rangarajan, S. // Chemical Business;Jan2010, Vol. 24 Issue 1, p41 

    The article focuses on separation processes which are based mainly on action in an electric field. The theory of electrical separations is discussed. It defines the four related elektrokinetic phenomena, namely, electrophoresis, sedimentation potential, electroosmosis and streaming potential....

  • ENVIRONMENTAL TECHNOLOGIES.  // Japanese High Energy Efficiency & Clean Energy Technologies;Apr/May2001, Vol. 1 Issue 2, p19 

    Provides information on several research projects on innovative technologies for environmental conservation in Japan as of April 2001. Chemical carbon dioxide fixation and utilization technology; Technology for recovery and fixation of environmentally impacting substances; Simple chemistry...

  • EUTROPHICATED SEDIMENT REMEDIATION USING SHELL FRAGMENT AS REGIONAL UNUSED RESOURCES FOR NUTRIENTS ELUTION CONTROL. Kazuhito Murakami; Saki Agatsuma; Michio Gomyo; Akiko Inoue-Kohama // International Journal of GEOMATE;Jun2015, Vol. 8 Issue 2, p1239 

    Dominant species of Aoko, Anabaena, has a "function of nitrogen fixation from air", so if there is even phosphorus in water, they can multiplicate explosively. This study aimed the removal of phosphorus by shells of regional unused resources as eutrophication countermeasure in Hasunuma Seaside...

  • The ICS 2010 Disaster Restoration & Remediation. Stouffer, Jeffrey // ICS: Cleaning Specialist;Mar2010, Vol. 48 Issue 3, p18 

    The article discusses the "ICS Disaster Restoration & Remediation Market Study," that examined the perspectives and choices of restoration and remediation professionals relative to their business. The top three services to which those surveyed attribute most of their disaster and restoration...

  • Electrokinetic Removal of Manganese from River Sediment. Genc, Ayten; Chase, George; Foos, Annabelle // Water, Air & Soil Pollution;Feb2009, Vol. 197 Issue 1-4, p131 

    Manganese was removed from naturally polluted river sediment by applying an electrokinetic remediation technique. The sediment was alkaline and had 20% clay, which was mainly illite. The electrokinetic remediation experiments were performed by controlling pHs in the electrode cells and reverse...

  • Weakly nonlinear electrophoresis of a highly charged colloidal particle. Schnitzer, Ory; Zeyde, Roman; Yavneh, Irad; Yariv, Ehud // Physics of Fluids;May2013, Vol. 25 Issue 5, p052004 

    At large zeta potentials, surface conduction becomes appreciable in thin-double-layer electrokinetic transport. In the linear weak-field regime, where this effect is quantified by the Dukhin number, it is manifested in non-Smoluchowski electrophoretic mobilities. In this paper we go beyond...

  • The Elizabeth River Project. Brzozowski, Carol // Stormwater;Buyers Guide 2008, Vol. 9 Issue 4, p68 

    The article focuses on the Elizabeth River Project, a nonprofit grassroots effort leading the Elizabeth River cleanup in Virginia. The grassroots effort was started in 1991 and has expanded to include industries, citizens and local state, and municipal government agencies. The overall philosophy...

  • Introduction to the Treatment of Polluted Sediments. Rulkens, Wim // Reviews in Environmental Science & Biotechnology;Sep2005, Vol. 4 Issue 3, p213 

    This paper overviews the large variety of remediation options for polluted sediments that are currently available. These include physico-chemical and biological techniques that can be applied in situ or ex site.

  • A Decision Support System for Concrete Bridge Maintenance. Rashidi, Maria; Lemass, Brett; Gibson, Peter // AIP Conference Proceedings;5/21/2010, Vol. 1233 Issue 1, p1372 

    The maintenance of bridges as a key element in transportation infrastructure has become a major concern for asset managers and society due to increasing traffic volumes, deterioration of existing bridges and well-publicised bridge failures. A pivotal responsibility for asset managers in charge...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics