<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">MacKinnon, M. D.</style></author><author><style face="normal" font="default" size="100%">Boerger, H.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Description of two treatment methods for detoxifying oil sands tailings pond water</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Biodegradation</style></keyword><keyword><style  face="normal" font="default" size="100%">bioremediation</style></keyword><keyword><style  face="normal" font="default" size="100%">Syncrude</style></keyword><keyword><style  face="normal" font="default" size="100%">tailings treatment</style></keyword><keyword><style  face="normal" font="default" size="100%">tailings water</style></keyword><keyword><style  face="normal" font="default" size="100%">toxicity</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1986</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.researchgate.net/publication/244993290_Description_of_two_treatment_methods_for_detoxifying_oil_sands_tailings_pond_water</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Water Pollution Research Journal of Canada </style></publisher><volume><style face="normal" font="default" size="100%">21</style></volume><pages><style face="normal" font="default" size="100%">16 pages </style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Large quantities of toxic wastewater are produced in the processing of oil sands. The toxicity appears to be due primarily to polar organic carboxylic acids (naphthenic acids). These surfactants occur naturally in oil sands and are released during the caustic hot-water extraction process. Relatively high concentrations of suspended particulate matter, bitumen, and dissolved solids, as well as low dissolved oxygen levels, may also contribute to the toxicity of the water. Tailings pond water can be detoxified by rapid chemical treatments which involved coagulation at a pH between 4. 5-5. 0, followed by flocculation with an anionic polyelectrolyte. This method has been successfully scaled up to large batch and flowthrough systems under field conditions. A second treatment method involves the storage of tailings pond water in shallow, well aerated pits for 1 - 2 years, during which period natural processes result in a significant improvement in water quality.</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><custom2><style face="normal" font="default" size="100%">Alberta oil sands </style></custom2><custom4><style face="normal" font="default" size="100%">OSEMB</style></custom4></record></records></xml>