Kinetics of the Reactions of Ozone with Substituted Ethylenes

Комиссаров, В. Д.; Shafikov, N. Ya.; Zimin, Yu. S.

doi:10.1023/b:kica.0000038074.96200.69

Cited by 9 publications

(2 citation statements)

References 9 publications

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“…[4] Advanced oxidation processes (AOPs) optimise the application of ozone, and the concentrations of hydroxyl radicals (E 0 = 2.80 V) that are produced by O 3 -decomposition in aqueous solutions produce a significant increase in the decomposition rate of pollutants. [5,6] The primary field of ozone application is the water industry, although ozone has been increasingly applied to solve gaseous and liquid problems in other industries and in medical therapies. In water treatment, ozone can be used in various steps of the treatment process to enhance biological processes and micro-flocculation, remove iron and manganese, degrade pesticides and other micro-pollutants, [7] remove colour, [3-7-10] remove pharmaceutical compounds during drinking and wastewater treatments, [11] oxidise trace organic impurities in ultra-pure water, [12] treat wine vinasses and disinfect potable water.…”

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confidence: 99%

Treatment of soft drink process wastewater by ozonation, ozonation-H₂O₂and ozonation-coagulation processes

García-Morales

Roa‐Morales

Dı́az

et al. 2012

Journal of Environmental Science and Health, Part A

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In this research, we studied the treatment of wastewater from the soft drink process using oxidation with ozone. A scheme composed of sequential ozonation-peroxide, ozonation-coagulation and coagulation-ozonation treatments to reduce the organic matter from the soft drink process was also used. The samples were taken from the conventional activated sludge treatment of the soft drink process, and the experiments using chemical oxidation with ozone were performed in a laboratory using a reactor through a porous plate glass diffuser with air as a feedstock for the generation of ozone. Once the sample was ozonated, the treatments were evaluated by considering the contact time, leading to greater efficiency in removing colour, turbidity and chemical oxygen demand (COD). The effect of ozonation and coagulant coupled with treatment efficiency was assessed under optimal conditions, and substantial colour and turbidity removal were found (90.52% and 93.33%, respectively). This was accompanied by a 16.78% reduction in COD (initial COD was 3410 mg/L). The absorbance spectra of the oxidised products were compared using UV-VIS spectroscopy to indicate the level of oxidation of the wastewater. We also determined the kinetics of decolouration and the removal of turbidity with the best treatment. The same treatment was applied to the sample taken from the final effluent of the activated sludge system, and a COD removal efficiency of 100% during the first minute of the reaction with ozone was achieved. As a general conclusion, we believe that the coagulant polyaluminum chloride - ozone (PAC- ozone) treatment of wastewater from the manufacturing of soft drinks is the most efficient for removing turbidity and colour and represents an advantageous option to remove these contaminants because their removal was performed in minutes compared to the duration of traditional physical, chemical and biological processes that require hours or days.

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Section: Introductionmentioning

confidence: 99%

Treatment of soft drink process wastewater by ozonation, ozonation-H₂O₂and ozonation-coagulation processes

García-Morales

Roa‐Morales

Dı́az

et al. 2012

Journal of Environmental Science and Health, Part A

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“…This was accomplished by partial ozonolysis of the carbonyl compound corresponding to it, 2E,7-octadienal (3), and selective protection of the intermediate dialdehyde 4. For this, we were guided by the known reduced reactivity of conjugated aldehydes for ozone [4] and in reactions that form acetals [5].…”

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New approach to the synthesis of 9-oxo-2E-decenoic acid, a multifunctional pheromone of queen honeybee, from the telomer of butadiene and water

et al. 2011

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A new approach was proposed for the synthesis of 9-oxo-2E-decenoic acid, a multifunctional pheromone of queen honeybee (Apis mellifera L.), starting from the available telomer of butadiene and water (2E,7-octadien-1-ol) using in the key steps partial ozonolysis of the corresponding carbonyl compound, selective oxidation of the conjugated aldehyde into a carboxylic acid, and alkylation of acetoacetic ester to introduce the oxo group.Keywords: 2E,7-octadien-1-ol, 2E,7-octadienal, ozonolytic cleavage, 9-oxo-2E-decenoic acid, synthesis.9-Oxo-2E-decenoic acid (1) was identified as an important component in the honeybee (Apis mellifera L.) queen substance. It regulates the behavior and vital activity of the bee family. Furthermore, according to our research [1], it exhibits significant pharmacological properties such as antibacterial (for infections caused by Staphylococcus aureus, Proteus, Escherichia coli, Pseudomonas aeruginosa) and anti-inflammatory (for formalin, protein, and lidocaine inflammation models), acts as a wound-healing accelerator for flap wounds and thermal burns, an antidote, and an immunomodulator. Several approaches to the synthesis of 1 exist. They differ by the methods of introducing the oxo-and D,E-unsaturated carboxylic acid [2].Herein we propose a new approach to the synthesis of the biologically active keto acid 1 starting from the available telomer of butadiene and water (2) [3] that involves conversion of the allyl alcohol in the substrate into a conjugated acid and introduction of the oxo group using acetoacetic ester.The carbon skeleton of the starting diene alcohol 2 had to be shortened by one C atom in order to carry out the synthetic scheme. This was accomplished by partial ozonolysis of the carbonyl compound corresponding to it, 2E,7-octadienal (3), and selective protection of the intermediate dialdehyde 4. For this, we were guided by the known reduced reactivity of conjugated aldehydes for ozone [4] and in reactions that form acetals [5].

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Kinetics of Ozone-Olefin Reactions in Aqueous Solutions

et al. 2005

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Kinetics of the Reactions of Ozone with Substituted Ethylenes

Cited by 9 publications

References 9 publications

Treatment of soft drink process wastewater by ozonation, ozonation-H₂O₂and ozonation-coagulation processes

Treatment of soft drink process wastewater by ozonation, ozonation-H₂O₂and ozonation-coagulation processes

New approach to the synthesis of 9-oxo-2E-decenoic acid, a multifunctional pheromone of queen honeybee, from the telomer of butadiene and water

Kinetics of Ozone-Olefin Reactions in Aqueous Solutions

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Kinetics of the Reactions of Ozone with Substituted Ethylenes

Cited by 9 publications

References 9 publications

Treatment of soft drink process wastewater by ozonation, ozonation-H2O2and ozonation-coagulation processes

Treatment of soft drink process wastewater by ozonation, ozonation-H2O2and ozonation-coagulation processes

New approach to the synthesis of 9-oxo-2E-decenoic acid, a multifunctional pheromone of queen honeybee, from the telomer of butadiene and water

Kinetics of Ozone-Olefin Reactions in Aqueous Solutions

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Treatment of soft drink process wastewater by ozonation, ozonation-H₂O₂and ozonation-coagulation processes

Treatment of soft drink process wastewater by ozonation, ozonation-H₂O₂and ozonation-coagulation processes