@mastersthesis {51385,
	title = {Adsorption of single-ring model naphthenic acid from oil sands tailings pond water using petroleum coke-derived activated carbon},
	year = {2013},
	pages = {124 pages},
	school = {University of Toronto Department of Chemical Engineering and Applied Chemistry },
	address = {Toronto, Ontario.  },
	abstract = {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.},
	keywords = {coke, laboratory, naphthenic acids, tailings water, wastewater, wastewater treatment},
	url = {http://search.proquest.com/docview/1501950473},
	author = {Sarkar, B.}
}
