<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sarkar, B.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adsorption of single-ring model naphthenic acid from oil sands tailings pond water using petroleum coke-derived activated carbon</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">coke</style></keyword><keyword><style  face="normal" font="default" size="100%">laboratory</style></keyword><keyword><style  face="normal" font="default" size="100%">naphthenic acids</style></keyword><keyword><style  face="normal" font="default" size="100%">tailings water</style></keyword><keyword><style  face="normal" font="default" size="100%">wastewater</style></keyword><keyword><style  face="normal" font="default" size="100%">wastewater treatment</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://search.proquest.com/docview/1501950473</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">University of Toronto Department of Chemical Engineering and Applied Chemistry </style></publisher><pub-location><style face="normal" font="default" size="100%">Toronto, Ontario.  </style></pub-location><pages><style face="normal" font="default" size="100%">124 pages</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Petroleum coke-derived activated carbons were prepared and used for the adsorptive removal of a single-ring naphthenic acid (NA) from synthetic oil sands tailings pond water (TPW). The overall adsorption process was found to be intra-particle diffusion-controlled. The Weber-Morris intra-particle diffusion rate constants decreased from 7.43 to 1.23 mg/g min 0.5 after activated carbon was post-oxidized with oxygen, suggesting a hindering effect of oxygen surface groups. The Freundlich model fit of the equilibrium adsorption isotherms and the small negative ΔHo pointed to a physisorption-dominated process and the importance of specific surface area. It was estimated that about 2.7 g/L of basic CO2 -activated carbon is needed to reduce NA concentration from 120 mg/L to 2.5 mg/L (~98% removal) in synthetic TPW. However, equilibrium adsorption capacity was found to vary significantly after oxygen or nitrogen groups were introduced onto the surface. Therefore, there is a potential for enhanced adsorption by chemical functionalization of carbon.</style></abstract><custom3><style face="normal" font="default" size="100%">http://www.worldcat.org/oclc/5571610147</style></custom3><custom4><style face="normal" font="default" size="100%">OSEMB</style></custom4></record></records></xml>