Degradation of nitrogen containing organic compounds by combined photocatalysis and ozonation

Utilization of single-chamber microbial fuel cells as renewable power sources for electrochemical degradation of nitrogen-containing organic compounds

“…Comparatively, chemical-oxidative processes have been employed for nitrogen-containing organic compounds removals removal from aqueous solutions extensively as they can decompose molecules effectively. By omitting the generation of sludge from Fenton process and the utilization of photocatalyst, electrolysis technology exhibits promising future for nitrogen-containing organic compounds contamination controls among chemical-oxidative processes [10,11]. As higher applied voltage (almost up to 12 V) or current (up to 6 A) are often required in these processes [12][13][14], thus other alternatives should be explored to strengthen their efficiencies with energy conservation.…”

Assessment of Fenton's reagent and ozonation as pre-treatments for increasing the biodegradability of aqueous diethanolamine solutions from an oil refinery gas sweetening process

“…The pH varied from 2.05 to 5.70, the ferrous iron concentration was fixed at 1000 mg/L, and the hydrogen peroxide dose was varied from 600 to 12 000 mg/L (doses were selected on the basis of information reported in literature [13,14,19,20] and from preliminary experiments not discussed in this paper). To stop the reaction in each sample, a solution of sodium hydroxide was added for causing a sudden change in pH after addition of NaOH (pH 10) and to inac- tivate the residual content of hydrogen peroxide [9].…”

“…[17]. As mentioned in Section 2.2 of this work, the values of these parameters were set up according to information reported by Mare et al [13], Langlais et al [14] for ozonation as well San Sebastián Martínez et al [18] and Duesterberg et al [19] for Fenton's reagent and also from preliminary experiments not discussed in this paper. The response factor was the removal of COD in the treated solutions.…”

“…The first application of this method was the removal of organic pollutants in municipal wastewater [11,12] and after that many applications have been found for this AOP [9]. However, none report has been identified for the application of Fenton's reagent as pre-treatment of alkanolamines solutions for biological treatment, and for ozone only two specific reports have been found [13,14], one of them combining this oxidant with TiO 2 . Thus it is important to develop research projects for evaluating such oxidation processes as a pre-treatment step for biological treatment of the alkanolamines most commonly employed in refinery plants.…”

Degradation of Phthalic Acids and Benzoic Acid from Terephthalic Acid Wastewater by Advanced Oxidation Processes

“…These results are consistent with the previous reports, where the performance of photo catalytic ozonation was found to be greater, though moderately, than ozone photolysis (UV-O 3 ) system for the destruction of organics like phenol, nitrophenols, acetic acid, 2,4-dichlorophnoxyacetic acid (2,4-D), aniline, dimethylamine, pyridine etc. [26,[30][31][32] …”