Influence of iron ions on the phenol oxidation

Dors, M.; Metel, E.; Mizeraczyk, J.

doi:10.1007/s10582-006-0361-6

Cited by 5 publications

(2 citation statements)

References 25 publications

(30 reference statements)

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“…Instead of being involved in Fenton reactions, iron ions reacted with ozone. It is the case reported in another study concerning ozonation of phenol (Dors et al, 2006). Moreover, inhibition of alachlor and simazine oxidation at relatively high concentrations of Fe +2 and Mn +2 also was reported (Rivas et al, 2001;Li et al, 2004).…”

Section: Degradation Of Patulin In the Absence And Presence Of Metal supporting

confidence: 62%

Effects of Some Metals and Chelating Agents on Patulin Degradation by Ozone

Karaca

Velioğlu

2009

Ozone: Science & Engineering

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The efficiency of ozone treatment for degradation of the mycotoxin patulin in the presence of various metal ions was evaluated in model systems. An initial patulin concentration of 250 mg/L was ozonated and residual ozone concentration was about 0.17±0.01 mg/L at the end of the experiment. Patulin showed a weak resistance to ozone, because up to 98% of this toxin was oxidized in only one minute. Degradation rates in the presence of calcium, aluminum, copper and zinc were almost the same in the absence of these metals. However, degradation of patulin was reduced from 98 to 37% when the concentration of manganese increased from 0 to 3 mg/L. Patulin was almost completely degraded in the absence of iron, while the degradation was only 8.5% in the presence of 0.5 mg/L of iron. These results have revealed that manganese and iron significantly reduce the detoxification of patulin by ozone. Agents such as ethylenediaminetetraacetic acid and sodium polyphosphate effectively chelated iron and increased the degradation rate of patulin. None of the tested agents were able to chelate manganese and to enhance patulin degradation by ozone.

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Section: Degradation Of Patulin In the Absence And Presence Of Metal supporting

confidence: 62%

Effects of Some Metals and Chelating Agents on Patulin Degradation by Ozone

Karaca

Velioğlu

2009

Ozone: Science & Engineering

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“…Efforts to utilize more efficiently the ability of corona discharge to produce short‐lived radicals have led to the development of reactors in which the discharge is applied directly into the water 8, 19, 23–35. When both the electrodes are submerged the discharge is called electrohydraulic and is characterized by the formation into the water of a plasma channel which can reach temperatures of 14 000–50 000 K and thus function as a blackbody radiation source.…”

Section: Introductionmentioning

confidence: 99%

Advanced Oxidation Process for Degradation of Aqueous Phenol in a Dielectric Barrier Discharge Reactor

Marotta

Schiorlin

Ren

et al. 2011

Plasma Processes & Polymers

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A novel dielectric barrier discharge reactor was developed for the oxidative degradation of organic pollutants in water. Phenol, chosen as a model compound, is efficiently removed from the aqueous solution according to an exponential decay as a function of treatment time at constant voltage. The effect of different experimental variables was investigated, including the active electrodes material and size and the flow rate of air above the solution. A few intermediates and CO 2 , the final product of phenol decomposition, were detected and identified by LC/ESI-MS and FT/IR analysis. The major reactive species formed upon application of the discharge in air, the OH radical and ozone, were determined by means of specific chemical probes.

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