ozone oxidation Articles

  • Comparison of Fenton's oxidation and ozonation for removal of estrogens

    This study compares efficiency of Fenton's oxidation and ozonation of 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) as two possible processes for removal of estrogens from aqueous solutions. The effectiveness of Fenton's oxidative removal was studied at different ratios of reagents Fe2+:H2O2 (1:0.5; 1:10; 1:20; 1:33), where with some molar ratios up to 100% removal of E2 and EE2 was achieved ...


    By IWA Publishing

  • Oxidative degradation of COD in Petrochemical facility using Ozone-based advanced oxidation

    The aim of this study was to investigate the use of ozone-based advanced oxidation processes for the oxidative destruction of COD in a petrochemical facility. Several  AOP experiments were carried out in order to select and optimise the successful treatment option. A LABO3-AOP pilot unit was used where filtered wastewater (COD 1250 ppm) was circulated throughout the AOP reactor and ozone ...


    By ESCO International

  • The influence of reaction conditions in the oxidation of organic compounds of nuclear laundry water by ozone

    This paper presents a summary of degrading organic compounds of nuclear laundry water by ozonation in different conditions of pH, hydrogen peroxide and ultraviolet radiation. The degradation of organic compounds was analysed by chemical oxygen demand (COD), total organic carbon (TOC) and biochemical oxygen demand (BOD). The optimal degradation conditions were at pH 7 with ozone, UV radiation and ...


    By IWA Publishing

  • 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

  • Pulsed corona discharge: the role of ozone and hydroxyl radical in aqueous pollutants oxidation

    Ozone and hydroxyl radical are the most active oxidizing species in water treated with gas-phase pulsed corona discharge (PCD). The ratio of the species dependent on the gas phase composition and treated water contact surface was the objective for the experimental research undertaken for aqueous phenol (fast reaction) and oxalic acid (slow reaction) solutions. The experiments were carried out in ...


    By IWA Publishing

  • Catalytic Oxidizers

    As the full effect of the Federal Clean Air Act (CAA) Amendments continue to impact today’s industry, many different companies will be required to install air pollution control equipment. With more than twenty-five years of proven success, catalytic oxidation continues to be a popular method for controlling volatile organic compound (VOC) emissions. According to the Clean Air Act, any organic ...


    By The CMM Group, LLC

  • Ozone Introduction in Waste Water

    Application in WASTE WATER Oxidation of organic waste. Cyanide destruction. Ground water petrochemical oxidation. Heavy metal precipitation. Pulp & paper effluents. Textile Mill effluents. Textile Dye, Starch, FOG (Fate, Oil, Grease) elimination. Pesticide, herbicide and insecticide elimination. BOD reduction of ...


  • 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 ...

  • Ozonation Pretreatment to MIEX® Process

    The MIEX®DOC process is a proven technology for the removal of dissolved organic carbon (DOC) from potable and wastewater sources. Occasionally, waters are found to contain an intractable fraction of organic carbon and in such instances, the performance of the MIEX®DOC technology can be enhanced with ozonation. Ozonation is believed to be effective in partially oxidizing organic material and ...


    By IXOM Watercare

  • Ozone systems for beginners

    This paper is intended for people who know a cooling tower when they see one but have little or no knowledge of their care or what part ozone plays. I have tried to make this as simple as possible and there is even a block diagram on the last page to help you out. Ready? Okay, here is what you need to know first: The sole function of ozone use in evaporative cooling towers is to disinfect water. ...


    By Zentox Corporation

  • Qmax Ozone Presentation

    Ozone (O3) is an allotrope of oxygen, the molecule consisting of three oxygen atoms instead of the more stable diatomic O2 Ozone is a pale blue gas at standard temperature and pressure. It forms a dark blue liquid below -112 ºC and a dark blue solid below -193 ºC. Ozone is a powerful oxidizing agent. It is also unstable, decaying to ordinary oxygen through the reaction: ...


  • A Different Way of Looking at Ozone

    Ozone, a tri-oxygenated molecule, is known to act as a shield to protect us from the sun’s harmful rays.  As this innocent molecule plummets to the lower elevations on its journey to our hometowns, it meets hydrocarbon vapors and oxides of nitrogen (bad company), is exposed to sunlight and temperature (bad influence), and becomes a culprit and villain named photochemical smog or bad ozone. ...


  • 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 ...

  • Degradation and changes in toxicity and biodegradability of tetracycline during ozone/ultraviolet-based advanced oxidation

    Advanced oxidation processes (AOPs) composed of O3, H2O2 and ultraviolet (UV) were applied to degrade tetracycline (TC). Degradation efficiency was evaluated in terms of changes in absorbance (ABS) and total organic carbon (TOC). The change in biotoxicity was monitored with Escherichia coli and Vibrio fischeri. The improvement in ...


    By IWA Publishing

  • Combination of microwave demulsification, ozone oxidation and biological aerated filter for advanced treatment of oilfield wastewater with low biodegradability

    In this study, a combination process was developed in laboratory-scale including microwave demulsification, ozonation, and biological aerated filter (BAF) in series for the purpose of removing pollutants in oilfield wastewater with high microtoxicity. The microwave demulsification treatment removed 63.4% of oil. The ozonation treatment removed 79.3% of petroleum sulfonate, resulting in a ...


    By IWA Publishing

  • Removal of heavy metals in an abandoned mine drainage via ozone oxidation: a pilot-scale operation

    The objective of this study was to evaluate the ozone oxidation of dissolved heavy metals in an abandoned mine drainage (AMD) by conducting a pilot-scale operation at two different ozone doses of 7.5 and 24.0 g O3/h into an ozone reactor. A portion of the abandoned mine drainage near the Jungam Mine in Samchuck, Korea was pumped into this pilot-scale plant and used as an influent for the ozone ...


    By IWA Publishing

  • Removal of heavy metals in an abandoned mine drainage via ozone oxidation: a pilot-scale operation

    The objective of this study was to evaluate the ozone oxidation of dissolved heavy metals in an abandoned mine drainage (AMD) by conducting a pilot-scale operation at two different ozone doses of 7.5 and 24.0 g O3/h into an ozone reactor. A portion of the abandoned mine drainage near the Jungam Mine in Samchuck, Korea was pumped into this pilot-scale plant and used as an influent for the ozone ...


    By IWA Publishing

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