ozone oxidation Articles

  • Ethylene removal through oxidation versus Ozone

    Fruit constantly emits ethylene inside the chambers. To efficiently reduce the concentration of ethylene in these spaces, it needs to be eliminated at a speed that is faster than the production ratio of the fruit. This is achieved when the airflow that passes through the machines in one hour is equal to the volume of the chamber.   Depending on the chamber's volume, Bioconservacion ...


    By Bioconservacion SA

  • The degradation of diethyl phthalate (DEP) during ozonation: oxidation by-products study

    The degradation of diethyl phthalate (DEP) in an aqueous solution during ozonation was investigated by identifying the oxidation intermediates using GC–MS. The experiments were carried out in semi-batch mode with a 1.5 mg l-1-min ozone dose. The proposed degradation pathways were divided into hydrolysis of the aliphatic chain (pathway (A)) and hydroxylation resulting from ∙OH attack in the ...


    By IWA Publishing

  • Sanitation Using Ozone & Chlorine

    For nearly 100 years, ozone has been used all over the world for water sanitation. It is nature’s strongest oxidizer and has a byproduct of pure oxygen. Chlorine, on the other hand, is a very effective, time-proven chemical, but is ineffective against hard-to-kill microorganisms such as cryptosporidium. It also has some unpleasant byproducts. Together, however, these two substances can ...

  • A Discussion on Ozone Chemistry

    MEMBRANE AND APPLICATION DEVELOPMENT 1.0 INTRODUCTION The ability of ozone to effectively treat wastewater is dependent on the nature of contaminant in question. For example, ozone will readily remove color from a dye solution, but has much more difficulty reducing the biochemical oxygen demand (BOD) of a sucrose stream. These differences in ozone effectiveness are ...

  • Introduction to Ozone Injection Technology

    Untitled Document Ozone is a highly reactive chemical that has proven to be effective in destroying a wide variety of organic chemicals, including MtBE and chlorinated VOCs. ...

  • Mitigating Environmental Impact Of Gold Mine Wastewater Through Ozone Oxidation And Aquifer Re-injection

    US Environment Protection Agency (USEPA) regulations require mining operations to remediate their waste streams prior to environmental discharge. Wastewater streams from gold mine operations can be particularly toxic due to the potential for cyanide contamination and the concentration of metals contained in the wastewater effluent. This paper reviews the challenges and success of installing and ...

  • Ozone Brings Better Bottled Water

    The proliferation of bottled beverages worldwide and an increased awareness of consumer health issues have beverage bottlers rethinking how to keep their liquids safe for consumption. One problem they face is the need to deliver a product that is free of bacteria, to provide extended shelf life and product quality. Ozone has quickly become the disinfectant of choice among water bottlers ...

  • Ozone-based reclamation of an STP effluent

    The system ozone and hydrogen peroxide was used to reclaim wastewater from the secondary clarifier from a Sewage Treatment Plant (STP) of Alcalá de Henares (Madrid-Spain). The assays were performed by bubbling a gas mixture of oxygen and ozone, with ~24 g Nm-3 of ozone concentration, through a volume of wastewater samples for 20 minutes at 25°C . The removal of dissolved ...


    By IWA Publishing

  • Ethylene removal through oxidation in EthylClean Machines versus forced air through ozone

    Fruit constantly emits ethylene inside the chambers. To efficiently reduce the concentration of ethylene in these spaces, it needs to be eliminated at a speed that is faster than the production ratio of the fruit. This is achieved when the airflow that passes through the machines in one hour is equal to the volume of the chamber. Depending on the chamber's volume, Bioconservacion recommends ...


    By Bioconservacion SA

  • Using Ozone Disinfection for EDC Removal

    Clark County Water Reclamation District (CCWRD) serves the suburban area in and around the city of Las Vegas. The Las Vegas Valley is served by three treatment plants, which all discharge to the Las Vegas Wash. The wash empties into the Las Vegas Bay of Lake Mead. Lake Mead is also the source of drinking water for the Las Vegas Valley. In 1996 USGS reported symptoms of estrogen exposure in carp ...

  • Ozone toxicology and guidelines for safe use in cooling water ozonation systems

    Abstract Ozone, like all oxidizing gases, is potentially harmful if human exposures occur at a significant concentration for a sufficient duration. This paper discusses the physical properties of ozone, current exposure standards, toxicology of ozone, and recommended safety practices for safe operations in cooiing water treatment ...


    By Zentox Corporation

  • Out In the Ozone the Return of Ozone and the Hydroxyl Radical to Wastewater Disinfection

    The City of Phoenix is investigating the use of various disinfection technologies for its 91st Avenue wastewater treatment facility. Key to this investigation is the implementation of a UV system to meet State of Arizona, Class A+ disinfection requirements. During this evaluation, the range of alternatives was expanded to include ozonation and other advanced oxidation processes (AOP), to examine ...

  • Drinking Water Aesthetics Improve with Ozone Treatment

    High quality water sources for municipal use are dwindling, forcing utilities to seek alternate water sources. Many times, aesthetics are the only problem preventing the use of these alternate water sources for potable purposes. Although typically used as a disinfectant, ozone offers municipal water purveyors the benefits of being the strongest commercially available oxidizing agent (Table 1). ...

  • Limitations of the removal of cyanide from coking wastewater by ozonation and by the hydrogen peroxide-ozone process

    The purpose of this study is to compare the efficiency of ozonation and the hydrogen peroxide–ozone process for the removal of cyanide from coking wastewater. The most efficient oxidation process is combined with coagulation–flocculation–decantation and lime–soda ash softening pretreatments. The oxidation in aqueous solution and industrial wastewater (at pH 9.5–12.3) by O3 was carried out ...


    By IWA Publishing

  • How to reverse the causes of ozone layer destruction

    Since the causes of ozone layer depletion were identified, solutions were put into place to reduce or eliminate their usage. The U.S. Clean Air Act and the Montreal Protocols address the problem internationally. The goal of these treaties is to stop the damage to the ozone layer by phasing out known contributors.Although there are numerous causes of ozone layer depletion, chloroflurocarbons have ...


    By Verisae

  • Ozone in the Laundry Industry - Practical Experiences in the United Kingdom

    Abstract Since the early 1990s, the use of ozone in many commercial and industrial laundering applications has been evolving rapidly. Ozone allows washing to be conducted using cold water, thereby saving considerable heat energy and water consumption. Additionally, ozone enhances the wash process, resulting in a significant reduction in detergent dosage and number of rinses, thus saving ...

  • Laundry Oxidation System Saves Money & Time for Hotel

    A recent trial at a local San Antonio hotel using the Ecotex Laundry Oxidation System, has yielded results proving the company's claim that significant savings can be realized in water, natural gas, chemical use, and labor. For this 120 room hotel, a savings of over 250,000 gallons of water per year will be realized, while improving the quality and cleanliness of the laundry being processed. The ...

  • Utilizing UV, ozone & AOP technologies for municipal, industrial & waste water treatment

    ESCO International Solutions & Technologies provide a unique portfolio of technical expertise and equipment, specializing in Ozone, UV and Advanced Oxidation Processes (AOP) for water, gas effluent & Odour treatment. Adapting to strict user guidelines and customer focused design means ESCO International systems are reliable and delivers high water purification standards. As conventional ...


    By ESCO International

  • Heterogeneous catalytic ozonation of cationic dyes using volcanic sand

    This work aims to present experimental results on the treatment of methylene blue contaminated waters using heterogeneous catalytic ozonation promoted by volcanic sand. The effect of pH (2–8), and the presence of radical scavengers (acetate ions) in homogeneous and heterogeneous systems are evaluated at laboratory scale. Heterogeneous catalytic ozonation using volcanic sand increases methylene ...


    By IWA Publishing

  • Enhanced decomposition of 1,4-dioxane in water by ozonation under alkaline condition

    1,4-Dioxane is a probable human carcinogenic and refractory substance that is widely detected in aquatic environments. Traditional wastewater treatment processes, including activated sludge, cannot remove 1,4-dioxane. Removing 1,4-dioxane with a reaction kinetic constant of 0.32 L/(mol·s) by using ozone, a strong oxidant, is difficult. However, under alkaline environment, ozone generates ...


    By IWA Publishing

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