Wet air oxidation of nitrobenzene enhanced by phenol

Simultaneous oxidation of cyanide and thiocyanate at high pressure and temperature

“…These results suggest an interaction between the two species during the oxidation process, cyanide being easily oxidizable and thiocyanate being more refractory to oxidation [29]. Synergism phenomena has been frequently reported by several authors during the wet oxidation of different compounds such as: mixtures of simple alcohols and acetic acid [30], low molecular mass carboxylic acids [31], phenol, cellobiose and low molecular weight acids [32], nitrobenzene and phenol [25], and dinitrophenol and trinitrophenol [33]. During a synergistic mechanism, one of the species (cyanide in this case) is a better radical generator than the less easily oxidizable species (thiocyanate).…”

“…The existence of synergistic and inhibitory effects is common in aqueous-phase oxidations, such as wet oxidation, and may affect the overall oxidation rate of the process significantly. Synergism involves the simultaneous reaction of two species, one being easily oxidized and the other more refractory to oxidation, with the easily oxidized component effectively increasing the oxidation rate of the refractory compound [25]. Hence, the values of the kinetic constants for the simultaneous degradation of thiocyanate and cyanide may be different from those obtained in the individual degradation of both pollutants.…”

Catalytic Degradation of Nitrobenzene and Aniline in Presence of Ozone by Magnesia from Natural Mineral

“…Nitrobenzene is an important material for the production of aniline, aniline dyes, explosives, pesticides and drugs. It has also been used as a solvent in products such as paints, shoes and floor metal polishes [1,2]. Aniline and its derivatives are commonly produced as by-products of the petroleum, paper, coal and chemical industries [3].…”

Wet air co-oxidation of decabromodiphenyl ether (BDE209) and tetrahydrofuran

“…Since some compounds are very difficult to be oxidized under moderate reaction conditions, more easily oxidisable compounds may initiate the more difficultly oxidisable compounds. Therefore, wet air co-oxidation (WACO) has drawn more and more attention of researchers [17][18][19]. In this paper, the WACO of a major commercial polybrominated diphenyl ether flame retardant congener, BDE209, was studied with THF as an initiator for the first time.…”