Kinetics of the reaction between ozone and phenolic acids present in agro-industrial wastewaters

Beltrán‐Heredia, J.; Torregrosa, Joaquin; Domínguez, Joaquín R.; Peres, José A.

doi:10.1016/s0043-1354(00)00343-2

Cited by 57 publications

(32 citation statements)

References 17 publications

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“…When the temperature is higher, normally the reactivity of ozone oxidation is higher according to Arrhenius-type expression (Beltran-Heredia et al, 2001). However, it can be expected that the residual ozone concentration in water should decrease when the temperature is higher because the solubility of ozone tends to be lower.…”

Section: Resultsmentioning

confidence: 99%

Decomposition of Phenol in Water by Ozone Oxidation with Metal-Supported Carbongel

Sano

Yamamoto

Shinomiya

et al. 2009

J. Chem. Eng. Japan

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Porous carbongel beads supporting Co or Ni were prepared to enhance decomposition of phenol in water with ozone oxidation. The carbongel beads were synthesized by carbonization of resorcinol-formaldehyde (RF) gel beads whose diameter was approximately 1 mm. Co and Ni were supported on carbongel beads by impregnation with soluble nitrate salts of Co and Ni followed by thermal decomposition and post-oxidation treatment. In the experiments to decompose phenol, the enhancement effects of the carbongels supporting Co or Ni were observed, in which the degradation rate of phenol with these gels were larger than that with pristine carbongel or without any carbongel. In comparison between Co and Ni, Co showed larger enhancement effect. In these experiments, the concentration of the residual ozone in water was monitored. It was revealed that the residual ozone is significantly reduced when Co was used. In the experiments with varied temperature 5, 15, 25 • C, the phenol degradation rate became the highest when the temperature was 5 • C, while the higher temperature of 25 • C was preferable when a reduced concentration of residual ozone is demanded.

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Section: Resultsmentioning

confidence: 99%

Decomposition of Phenol in Water by Ozone Oxidation with Metal-Supported Carbongel

Sano

Yamamoto

Shinomiya

et al. 2009

J. Chem. Eng. Japan

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“…Herbicides -when bromoxinile and trifluralin were O 3 treated at doses ranging from 80 to 480 μM (10 min), the gas was able to significantly react with bromoxynil, achieving degradation of 98% (after 2 min), however trifluralin was less O 3 reactive, reaching only half (50%) of its degradation after 5 min [55]. Toxic wastes -on the other hand, wastes that may be present in factories water effluents such as from wine distilleries (also pharmaceutical and textile industries), the O 3 gas lead to living organisms inactivation and toxic compounds degradation thus thus can be a quite beneficial to nature and the humans safety in the area [20,31,34,[56][57][58][59].…”

Section: Toxic Compounds Combinedmentioning

confidence: 99%

Effectiveness of Ozone Gas Application Methods against Combined Multi-Contaminants in Food

Christ¹,

Savi²,

Scussel³

2017

fph

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Despite the ozone (known as GRAS -generally recognized as safe) gas treatments published for each food living organism or chemical decontamination, they are not necessarily present or contaminate food individually. Most of the time, they are present all together. Therefore, the most important point, regarding an O 3 application method to be chosen is its effectiveness to all contaminants that may be in the target food. Therefore, ozone gas decontamination methods that gather combined multi-contaminants and their effectiveness in food were surveyed. Both, for inactivation of living organisms (insects, mites, fungi, yeasts and bacteria) and degradation of toxic compounds (pesticides and mycotoxins). They are the main need for an effective and comprehensive commercial decontamination application. This review brings details on O 3 formation energy sources, its application conditions (concentration / time of exposure), container characteristics (volume / material type / sealed or hermetic) and effectiveness for different food (type / contamination level / batch size/moisture content). From the studies and data reported, ozone has shown to be an efficient green agent for combined multi-decontamination, thus prolonging the food storage and shelf life. It does not cause/produce adverse effects on food quality.

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“…According to Gulyas et al (1995) and Beltrán-Heredia et al (2001), some organic compounds react rapidly with ozone (O 3 ). Polyphenols are aromatic compounds that are prone to attack by electrophilic agents such as O 3 (Alvarez et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Investigating the Effect of Ozone on the Biodegradability of Distillery Wastewater

Sigge¹,

Green²,

Plessis³

et al. 2016

SAJEV

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The effect of ozonation on wine distillery wastewater was investigated firstly by monitoring the effect of ozonation on the composition of the wastewater and, secondly, by investigating its effect on the biodegradability of the wastewater. An average COD reduction of 271 mg COD.g O 3 -1 was found for wastewater from a distillery pond system. Stable microbial populations, which are found in upflow anaerobic sludge blanket (UASB) granules, were used to determine the toxic effect of wastewater on microbial activity. Granule activity was measured in terms of the rate of biogas and methane production, as well as cumulative biogas volume. Low ozone doses (200 to 400 mg O 3 .L -1 ) increased granule activity in terms of biogas, methane production, and cumulative gas volumes. Distillery wastewater reduced the activity of granules, most likely due to the presence of polyphenols and other recalcitrant compounds in the distillery wastewater.

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Kinetics of the reaction between ozone and phenolic acids present in agro-industrial wastewaters

Cited by 57 publications

References 17 publications

Decomposition of Phenol in Water by Ozone Oxidation with Metal-Supported Carbongel

Decomposition of Phenol in Water by Ozone Oxidation with Metal-Supported Carbongel

Effectiveness of Ozone Gas Application Methods against Combined Multi-Contaminants in Food

Investigating the Effect of Ozone on the Biodegradability of Distillery Wastewater

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