@article {52598,
	title = {Impact of peroxydisulfate in the presence of zero valent iron on the oxidation of cyclohexanoic acid and naphthenic acids from oil sands process-affected water},
	volume = {46},
	year = {2012},
	month = {07/2012},
	pages = {7 pages },
	publisher = {Environmental Science \& Technology },
	abstract = {Large volumes of oil sands process-affected water (OSPW) are produced during the extraction of bitumen from oil sands in Alberta, Canada. The degradation of a model naphthenic acid, cyclohexanoic acid (CHA), and real naphthenic acids (NAs) from OSPW were investigated in the presence of peroxydisulfate (S2O82{\textendash}) and zerovalent iron (ZVI). For the model compound CHA (50 mg/L), in the presence of ZVI and 500 mg/L S2O82{\textendash}, the concentration decreased by 45\% after 6 days of treatment at 20 {\textdegree}C, whereas at 40, 60, and 80 {\textdegree}C the concentration decreased by 20, 45 and 90\%, respectively, after 2 h of treatment. The formation of chloro-CHA was observed during ZVI/S2O82{\textendash} treatment of CHA in the presence of chloride. For OSPW NAs, in the presence of ZVI alone, a 50\% removal of NAs was observed after 6 days of exposure at 20 {\textdegree}C. The addition of 100 mg/L S2O82{\textendash} to the solution increased the removal of OSPW NAs from 50 to 90\%. In absence of ZVI, a complete NAs removal from OSPW was observed in presence of 2000 mg/L S2O82{\textendash} at 80 {\textdegree}C. The addition of ZVI increased the efficiency of NAs oxidation by S2O82{\textendash} near room temperature. Thus, ZVI/S2O82{\textendash} process was found to be a viable option for accelerating the degradation of NAs present in OSPW.},
	keywords = {naphthenic acids, tailings water, UofA, wastewater, wastewater treatment},
	url = {https://www.researchgate.net/profile/Przemystaw_Drzewicz/publication/229154446},
	author = {Drzewicz, Drzewicz and Perez-Estrada, Leonidas and Alpatova, Alla and Martin, Jonathan W. and Gamal El-Din, Mohamad}
}
