Effects of Ozone and Ozone/Hydrogen Peroxide on the Degradation of Model and Real Oil-Sands-Process-Affected-Water Naphthenic Acids

Water treatment technologies for the remediation of naphthenic acids in oil sands process-affected water

“…A more recent report published by Afzal et al [47] examined the oxidative degradation of cyclohexanoic acid (n = 7, z = À2, MW = 128.17 g mol À1 ), a single ring model compound, and native NAs from OSPW supplied by Syncrude Canada Ltd. using O 3 and O 3 /H 2 O 2 advanced oxidation processes in the presence of potential hydroxyl radical scavengers, such as tert-butyl alcohol and tetranitromethane. NA removal rates of up to 97.7% and 62.4% were observed when treating the water with O 3 in batch and semi-batch configurations, respectively.…”

An overview of oil–water separation using gas flotation systems

“…Effluent from flotation systems and can achieve below 10 mg L À1 OIW through multiple stages need to be further treated in the presence of dissolved oil/hydrocarbons. Several post treatment techniques such as advance oxidation (Afzal et al, 2015), solvent sublation (Bayati et al, 2012), photo-fenton (da Silva et al, 2015) and membrane filtration (Alzahrani and Mohammad, 2014;Muraleedaaran et al, 2009) are used to remove toxic dissolved hydrocarbon substances from water (e.g. Gas field produced water).…”

Assessment of an MnCe-GAC Treatment Process for Tetramethylammonium-Contaminated Wastewater from Optoelectronic Industries

“…However, the removal of TMAH by the MnCe-GAC/O 3 /H 2 O 2 process (42%) was significantly greater than that observed for the GAC/O 3 /H 2 O 2 process (29%) (Figure 3). The addition of H 2 O 2 could improve the removal of pollutants in wastewater in ozonation processes and it might be due to the formation of •OH radicals by the conjugated base of H 2 O 2 with ozone [16,[22][23][24][25]. In addition, an overdose of H 2 O 2 might act as a scavenger and react with •OH instead of ozone.…”