Photocatalysis of Naphthenic Acids in Water
Open Access
- 1 January 2010
- journal article
- Published by Scientific Research Publishing, Inc. in Journal of Water Resource and Protection
- Vol. 02 (07), 644-650
- https://doi.org/10.4236/jwarp.2010.27074
Abstract
Naphthenic acids (NAs) are soluble in water and are concentrated in oil sand process water (OSPW) as a result of caustic oil sands extraction processes. Significant environmental and regulatory attention has been focused on the naphthenic acids. A laboratory scale photocatalysis system was developed using UV254 florescent lamps. Experiments were conducted to determine the NA degradation efficiency of this system in presence of TiO2 catalyst. Degradation kinetics for total NAs as well as individual z-families was calculated. The developed treatment system was able to degrade OSPW NAs with half life values ranging between 1.55 and 4.80 h. This system also completely reduced the acute toxicity associated with NAs (up to 5 min. IC50 v/v > 90%) based on Microtox assaysKeywords
This publication has 1 reference indexed in Scilit:
- Comparison of high‐ and low‐resolution electrospray ionization mass spectrometry for the analysis of naphthenic acid mixtures in oil sands process waterRapid Communications in Mass Spectrometry, 2008