Photochemical oxidation of persistent cyanide-related compounds

Russian Journal of Physical Chemistry A - Kinetic regularities of the photolysis of thiocyanate solutions using of mono- and polychromatic UV radiation sources with different spectral ranges are...     

Photocatalytic Oxidation of Thiocianates in Aqueous Solutions

Russian Journal of Applied Chemistry - The kinetic patterns of the photocatalytic oxidation of thiocyanates by persulfate under the influence of quasi-solar ultraviolet radiation (UV) were...     

Oxidation of azo dyes in aqueous solutions by combined methods

Fundamental aspects of the oxidative destruction of Orange III azo dye in aqueous solutions by integrated methods combining UV irradiation and iron-peroxide treatment were studied.     

Catalytic destruction of organic contaminants by galvanochemical oxidation

The possibility of intensifying the catalytic destruction of phenol by galvanochemical oxidation was confirmed experimentally. The treatment time can be reduced due to the sluggish occurrence of chain radical oxidation (aftereffect). The oxidation can be performed in less acidic media in the presence of chlorides. The possibility of increasing the efficiency of oxidation by introducing H₂O₂ in the reaction zone in doses and reducing the undesired reactions of the oxidant was confirmed experimentally.     

Cavitational activation of the galvanochemical oxidation of phenol

Possibility of intensifying the galvanochemical oxidation of phenol under hydrodynamic cavitation conditions was studied.     

Liquid-phase oxidation of hydrogen sulfide in centrifugal bubbling apparatus

Liquid-phase oxidation of H₂S in centrifugal-bubbling apparatus in the presence of catalysts [manganese(II) chloride, cobalt phthalocyanine disulfonic acid, and a catalytic system including cobalt phthalocyanine disulfonic acid and MnCl₂] was studied.     

Sono-Photocatalytic Degradation of 4-Clorophenol in Aqueous Solutions

Russian Journal of Physical Chemistry A - The kinetic patterns of oxidative processes involving highly reactive oxygen-containing radicals generated in situ in the aqueous medium affected by...     

Photoactivation of the oxidation process of <Emphasis Type="Italic">para</Emphasis>-chlorophenol in aqueous solutions

Kinetics of the oxidative destruction of para-chlorophenol in a combined iron-persulfate system under the action of simulated sunlight was studied. It was shown that, under additional photoirradiation, a deep conversion of chlorophenol and main intermediate products of its destruction is provided, with iron compounds serving not only as catalysts, but also as photochemical oxidation sensitizers. The degree of mineralization of para-chlorophenol and products of its oxidation under a photoactivated treatment for two hours reached a value of 60%, whereas that in the “dark” reaction did not exceed 1%. In the combined oxidizing system S₂O ₈ ^2– /Fe²⁺/UV-Vis, a considerable synergic effect was observed due to the formation of reactive oxygen intermediate both via decomposition persulfate and through reduction of Fe³⁺ from inactive Fe³⁺ intermediates.     

Oxidation of atrazine by photoactivated potassium persulfate in aqueous solutions

General laws of the photochemical oxidation of atrazine by inorganic peroxo compounds under the impact of solar radiation are studied. It is found that almost complete conversion of atrazine can be achieved via photochemical oxidation with persulfate after 120 min, but no deep mineralization is observed. The effect an aqueous matrix has on the processes of atrazine degradation in combined oxidation systems is considered.     

Oxidative Degradation of Azo Dyes in Combined Fenton-like Oxidative Systems

Russian Journal of Physical Chemistry A - Kinetic patterns of the degradation of Methyl Orange (MO) dye are studied upon persulfate (PS) and quasi-monochromatic UV radiation (mercury-free source:...