<?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%">Headley, John V.</style></author><author><style face="normal" font="default" size="100%">Peru, Kerry M.</style></author><author><style face="normal" font="default" size="100%">Adenugba, Adeola A.</style></author><author><style face="normal" font="default" size="100%">Du, Jing-Long</style></author><author><style face="normal" font="default" size="100%">McMartin, Dena W.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Dissipation of naphthenic acids mixtures by lake biofilms</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%">federal government</style></keyword><keyword><style  face="normal" font="default" size="100%">laboratory trials</style></keyword><keyword><style  face="normal" font="default" size="100%">microbiology</style></keyword><keyword><style  face="normal" font="default" size="100%">naphthenic acids</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2010</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.researchgate.net/profile/Dena_Mcmartin/publication/44652800</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Journal of Environmental Science and Health Part A Toxic/Hazardous Substances and Environmental Engineering </style></publisher><volume><style face="normal" font="default" size="100%">45</style></volume><pages><style face="normal" font="default" size="100%">9 pages </style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The dissipation (combined sorption and biodegradation) of naphthenic acids (C(n)H(2n+z)O(2)) by lake biofilms with no previous adaptation to oil sands acids was investigated using rotating annular bioreactors. The dissipation by the biofilm was dependent on the chemical composition of the naphthenic acids mixture. There were 2 distinct groups of Fluka naphthenic acids which dissipated with pseudo first order kinetics: (a) t(1/2)= 7 days, r(2)= 0.984 and (b) components which were less readily dissipated with t(1/2)= 134 days, r(2)= 0.618. In contrast to the results observed for Fluka naphthenic acids, no dissipation was evident for lake biofilm exposed to Athabasca oil sands naphthenic acids. The differences in dissipation observed for the systems investigated are attributed to the combination of 3 key factors: (i) molecular structure and (ii) molecular mass of the naphthenic acids; along with (iii) inhibition by some components (containing elements of S and/or N acids). The later are more prevalent in oil sands naphthenic acids compared to Fluka naphthenic acids.</style></abstract><issue><style face="normal" font="default" size="100%">9</style></issue><custom2><style face="normal" font="default" size="100%">Athabasca Oil Sands Region (AOSR)</style></custom2><custom3><style face="normal" font="default" size="100%">http://www.worldcat.org/oclc/673212594</style></custom3><custom4><style face="normal" font="default" size="100%">OSEMB</style></custom4></record></records></xml>