PMID: 18409644Apr 16, 2008Paper

Electroosmotic flow stimulates the release of alginate-bound phenanthrene

Environmental Science & Technology
Lei ShiLukas Y Wick

Abstract

There is growing interest in employing electro-bioremediation, a hybrid technology of bioremediation and electrokinetics for the treatment of contaminated soil. Most present applications of electrokinetics aim at pollutant extraction, which requires transport over large distances facilitated by electroosmotic flow (EOF). They do not explicitly account for the possibility that EOF passing along soil particles stimulates the release of hydrophobic organic compounds (HOC) and locally improves pollutant bioavailability. Here, we report on the stimulated release of polycyclic aromatic hydrocarbon (phenanthrene) from model organic matter in the presence of direct current (DC)-electric fields (0.5-2 V cm(-1)) typically used in electrobioremediation measures. Alginate beads were employed as a model polymer release system (MPRS) exhibiting similar release behavior as natural organic matter (NOM). In the presence of EOF the phenanthrene release flux from alginate beads was between 1.4- and 1.8-fold higher than under hydraulic flow conditions with equal bulk water velocity and 30-120-fold higherthan under stagnantwater conditions. Our data suggest that DC-electric fields (0.5-2 V cm(-1)) can stimulate the release of PAH bound to particles...Continue Reading

References

Apr 1, 1999·Biotechnology and Bioengineering·H MulderW H Rulkens
Jul 29, 2005·Environmental Science & Technology·Stefanie KohlmeierLukas Y Wick
Dec 13, 2005·Environmental Pollution·José-Luis Niqui-ArroyoJosé-Julio Ortega-Calvo
Jan 1, 1995·Applied and Environmental Microbiology·H Harms, A Zehnder
Dec 30, 2006·Analytical Chemistry·Dzmitry HlushkouUlrich Tallarek
Feb 1, 1995·Environmental Science & Technology·P B Hatzinger, M Alexander

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Citations

Apr 16, 2013·Journal of Hazardous Materials·J J Ortega-CalvoM Cantos
Jul 29, 2010·The Science of the Total Environment·Lukas Y WickGraciela N Pucci
Feb 18, 2015·Journal of Hazardous Materials·Jinyi QinLukas Y Wick
Feb 3, 2011·Journal of Environmental Quality·José-Luis Niqui-Arroyo, José-Julio Ortega-Calvo
Nov 5, 2019·Chemosphere·Yongping ShanLukas Y Wick
Apr 26, 2021·Environmental Science and Pollution Research International·Ying HuangZhongjian Li

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