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The impact of oil sands process water matrix on the ozonation of naphthenic acids: from a model compound to a natural mixture.
- Source :
-
Canadian Journal of Civil Engineering . Oct2020, Vol. 47 Issue 10, p1166-1174. 9p. - Publication Year :
- 2020
-
Abstract
- Oil sands process water (OSPW) contains organics, inorganics, and particles. To understand and improve the ozonation performance, it is crucial to clarify the effect of inorganics and particles on the ozonation of OSPW organic compounds. In this study, OSPW containing only inorganic fraction (OSPW-IF) was obtained after the organics were adsorbed onto granular activated carbon. A model naphthenic acid (NA) compound, cyclohexanecarboxylic acid (CHA), was dissolved in OSPW-IF (CHA-OSPW-IF) and NaHCO3 buffer (CHA-Buffer). Ozonation of CHA-Buffer achieved higher CHA removal and lower utilized ozone dosages compared to CHA-OSPW-IF. Some inorganic ions present in OSPW (i.e., NH4+, HCO3−, and Cl−) caused a slight reduction of CHA degradation. Inorganics in OSPW inhibited the degradation of natural-occurring NAs while a negligible influence of particles on the ozonation of NAs was found. This research suggests that ozonation could be better utilized as an intermediate or post-treatment step in a treatment train for OSPW reclamation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03151468
- Volume :
- 47
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Canadian Journal of Civil Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 146140087
- Full Text :
- https://doi.org/10.1139/cjce-2019-0516