A study of catalytic behaviour of aromatic additives on the photo-Fenton degradation of phenol red

Abstract

The present study describes the photochemical degradation of phenol-red using photoFenton reaction. The progress of the reaction has been monitored spectrophotometrically. The effect of various organic additives e.g. hydroquinone, resorcinol and catechol on the rate of photodegradation has been observed. The effect of variation of various parameters such as pH, concentration of dye, Fe 3+ ion and additives, amount of H 2 O 2 , and light intensity on the rate of photodegradation was also observed. A tentative mechanism of the reaction has been proposed.

Greener And Expedient Approach for the Wastewater Treatment by Fenton and Photo-Fenton Processes: A Review

“…The enhancement in the rate of degradation of dye was observed in the following order:hydroquinones > chlorophenol> dichlorobenzene > aromatic carboxylic acids > anilidine > nitrophenol. Jain et al [51][52][53][54] studied the photo-Fenton degradation of dyes catalyzed by organic (hydroquinone, resorcinol, catechol) and inorganic additives like sodium thiosulfate and potassium bromate. Maezono et al 55 studied the generation and consumption of hydroxyl radicals as well as effects of operating parameters for the Fenton degradation of azo-dye Orange II.…”

Application of heterogenous catalyst of tris(1,10)-phenanthroline iron(II) loaded on zeolite for the photo-Fenton degradation of methylene blue

“…Kinetic observations showed the rate of the MB decomposition at the initial period was very slow, which implied the decomposition reaction had an induction period [29]. The induction period was about 20 min, in which the hydroxyl radicals started to be generated and resulted in a slow decomposition of MB.…”

Physico‐Chemical Processes

“…The photochemical degradation of phenol-red using photo-Fenton reaction was studied by Jain et al (2009) (Diagne et al, 2009). The experiment was performed at pH 3 and room temperature.…”