| diethylaminoethyl-cellulose clean-up of a large volume naphthenic acid extract. | the athabasca oil sands of alberta, canada contain an estimated 174 billion barrels of bitumen. during oil sands refining processes, an extraction tailings mixture is produced that has been reported as toxic to aquatic organisms and is therefore collected in settling ponds on site. investigation into the toxicity of these tailings pond waters has identified naphthenic acids (nas) and their sodium salts as the major toxic components, and a multi-year study has been initiated to identify the princ ... | 2006 | 16469358 |
| toxicity assessment of collected fractions from an extracted naphthenic acid mixture. | recent expansion within the oil sands industry of the athabasca basin of alberta, canada has led to increased concern regarding process-affected wastewaters produced during bitumen extraction. naphthenic acids (nas) have been identified as the primary toxic constituents of oil sands process-affected waters (ospw) and studies have shown that with time, microbial degradation of lower molecular weight nas has led to a decrease in observed toxicity. as earlier studies identified the need for an "une ... | 2008 | 18555508 |
| granular activated carbon for simultaneous adsorption and biodegradation of toxic oil sands process-affected water organic compounds. | naphthenic acids (nas) released into oil sands process-affected water (ospw) during bitumen processing in northern alberta are problematic for oil sands industries due to their toxicity in the environment and resistance to degradation during conventional wastewater treatment processes. granular activated carbon (gac) has shown to be an effective media in removing biopersistent organics from wastewater using a combination of adsorption and biodegradation removal mechanisms. a simultaneous gac (0. ... | 2015 | 25617868 |
| application of a solar uv/chlorine advanced oxidation process to oil sands process-affected water remediation. | the solar uv/chlorine process has emerged as a novel advanced oxidation process for industrial and municipal wastewaters. currently, its practical application to oil sands process-affected water (ospw) remediation has been studied to treat fresh ospw retained in large tailings ponds, which can cause significant adverse environmental impacts on ground and surface waters in northern alberta, canada. degradation of naphthenic acids (nas) and fluorophore organic compounds in ospw was investigated. i ... | 2014 | 25051215 |