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 efficie...

Capillary electrophoresis coupled to mass spectrometry (CE-MS) was used for the analysis of naphthenic acid fraction compounds (NAFCs) of oil sands process-affected water (OSPW). A standard mixture of amine-derivatized naphthenic acids is injected directly onto the CE column and analyzed by CE-MS in less than 15min. Time of flight MS analysis (TOFMS), optimized for high molecular weight ions, s...

A detailed computational study has been performed to assess the possibility of applying polydimethylsiloxane (PDMS) and its structurally similar derivatives as semi-permeable membranes filter two naphthenic, cyclohexanecarboxylic 2-norbornaneacetic, acids using a portable mass spectrometer. Several state-of-the-art levels theory have used understand interactions between PDMS naphthenic acids, w...

Naphthenic acids (NAs) are natural constituents in many petroleum sources, including bitumen in the oil sands of Northern Alberta, Canada. Bitumen extraction processes produce tailings waters that cannot be discharged to the environment because NAs are acutely toxic to aquatic species. However, aerobic biodegradation reduces the toxic character of NAs. In this study, four commercial NAs and the...

This paper presents chemical composition and aquatic toxicity characteristics of a commercial sample of naphthenic acids (NAs). Naphthenic acids are derived from the refining of petroleum middle distillates and can contribute to refinery effluent toxicity. NAs are also present in oil sands process-affected water (OSPW), but differences in the NAs compositions from these sources precludes using ...

Naphthenic Acids (NA) are important oil extraction subproducts. These chemical species one of the leading causes marine pollution and duct corrosion. For this reason, understanding behavior NAs in different saline conditions is challenges industry. In work, we simulated several naphthenic acid their mixtures, employing density functional theory calculations with MST-IEFPCM continuum solvation m...