Electrokinetic enhancement removal of heavy metals from industrial wastewater sludge

Chemosphere
Ching Yuan, Chih-Huang Weng

Abstract

An enhanced electrokinetic process for removal of metals (Cr, Cu, Fe, Ni, Pb, Zn) from an industrial wastewater sludge was performed. The electrokinetic experiments were conducted under a constant potential gradient (1.25 V cm(-1)) with processing fluids of tap water (TW), sodium dodecylsulfate (SDS) and citric acid (CA) for 5 days. Results showed that metal removal efficiency of heavy metals for EK-TW, EK-SDS and EK-CA systems are 11.2-60.0%, 37.2-76.5%, and 43.4-78.0%, respectively. A highest metal removal performance was found in EK-CA system. The removal priority of investigated metals from sludge by EK process was found as: Cu > Pb > Ni > Fe > Zn > Cr. The results of sequential extraction analysis revealed that the binding forms of heavy metals with sludge after electrokinetic process were highly depend upon the processing fluid operated. It was found that the binding forms of metals with sludge were changed from the more difficult extraction type (residual and sulfate fractions) to easier extraction types (exchangeable, sorbed, and organic fraction) after treatment by electrokinetic process. Results imply that if a proper treatment technology is followed by this EK process to remove metals more effectively, this treated s...Continue Reading

References

Jul 21, 2001·Journal of Hazardous Materials·C N MulliganB F Gibbs
Jun 7, 2002·The Science of the Total Environment·Jurate VirkutytPetri Latostenmaa
Jun 5, 2004·Journal of Hazardous Materials·David B GentSteve Granade
Jan 1, 2005·The Science of the Total Environment·Ahmet Altin, Mustafa Degirmenci
Apr 7, 2005·Journal of Hazardous Materials·Abidin Kaya, Yeliz Yukselen

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Citations

Dec 2, 2009·Environmental Technology·Ozge HanayOzgur Ozdemir
May 9, 2009·Journal of Hazardous Materials·Ozge HanayNilufer Nacar Kocer
Jul 1, 2008·Chemosphere·Shou-Heng Liu, H Paul Wang
Feb 7, 2015·Environmental Science and Pollution Research International·Jong-Chan YooKitae Baek
Dec 19, 2007·The Analyst·Jeffrey R Bacon, Christine M Davidson
Oct 23, 2015·Environmental Science and Pollution Research International·Matteo MasiGabriella Losito
Jul 12, 2016·Journal of Environmental Management·Amin Keyvan ZeraatkarMark P McHenry
Jun 24, 2008·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·M T RicartM A Sanroman

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