The impact of metallic coagulants on the removal of organic compounds from oil sands process-affected water

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Parastoo Pourrezaei
  • Przemysław Drzewicz
  • Yingnan Wang
  • Mohamed Gamal El-Din
  • Leonidas A. Perez-Estrada
  • And 5 others
  • Jonathan W. Martin
  • Julie Anderson
  • Steve Wiseman
  • Karsten Liber
  • John P. Giesy

Detail(s)

Original languageEnglish
Pages (from-to)8452-8459
Journal / PublicationEnvironmental Science and Technology
Volume45
Issue number19
Publication statusPublished - 1 Oct 2011

Abstract

Coagulation/flocculation (CF) by use of alum and cationic polymer polyDADMAC, was performed as a pretreatment for remediation of oil sands process-affected water (OSPW). Various factors were investigated and the process was optimized to improve efficiency of removal of organic carbon and turbidity. Destabilization of the particles occurred through charge neutralization by adsorption of hydroxide precipitates. Scanning electron microscope images revealed that the resultant flocs were compact. The CF process significantly reduced concentrations of naphthenic acids (NAs) and oxidized NAs by 37 and 86%, respectively, demonstrating the applicability of CF pretreatment to remove a persistent and toxic organic fraction from OSPW. Concentrations of vanadium and barium were decreased by 67-78% and 42-63%, respectively. Analysis of surface functional groups on flocs also confirmed the removal of the NAs compounds. Flocculation with cationic polymer compared to alum, caused toxicity toward the benthic invertebrate, Chironoums dilutus, thus application of the polymer should be limited. © 2011 American Chemical Society.

Citation Format(s)

The impact of metallic coagulants on the removal of organic compounds from oil sands process-affected water. / Pourrezaei, Parastoo; Drzewicz, Przemysław; Wang, Yingnan; Gamal El-Din, Mohamed; Perez-Estrada, Leonidas A.; Martin, Jonathan W.; Anderson, Julie; Wiseman, Steve; Liber, Karsten; Giesy, John P.

In: Environmental Science and Technology, Vol. 45, No. 19, 01.10.2011, p. 8452-8459.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review