Ozone Analysis Articles & Analysis
29 articles found
Ozone (O3) is a powerful oxidizing agent widely used in water and air disinfection and purification. However, its effectiveness is closely tied to its stability, and one of the key factors that influence ozone stability is the pH of the medium. As pH changes, the half-life of ozone is altered, impacting its ability to perform the desired reactions. In this blog post, we will explore how pH ...
Varanasi Municipal Corporation had to monitor the increasing pollution in the city, mainly due to increased tourism and infrastructure developments. Oizom along with Efkon India Pvt Ltd. deployed Polludrone in the city to analyze the pollution and meteorological parameters. 50 Polludrone across the city to gather and monitor ambient data. The data collected is continuously sent to our Terminal, ...
Materials and Methods The AOP Pilot system includes (figure 1): Oxygen fed Ozone generator UV/Ozone/H2O2 oxidation reactor Feed /Recirculation Pump Applied Ozone Dosage: measured at reactor inlet and outlet by ozone gas monitor H2O2 dosing: dosage varied according to ozone dosage pH and temperature ...
It was observed that the predicted values are significant (p<0.001) with coefficients of determination 0.98, 0.96, 0.98 for dye degradation, pH value and ozone concentration, respectively. The analysis of variance results showed that the coefficients of the polynomials for the percentage degradation and ozone concentration responses indicated ...
Introduction In recent years improvements in ozone based advanced oxidation technology efficiencies have lowered capital and operating expenses, improving the viability of the use of ozone as the main oxidant. ...
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. ...
This study investigated the effectiveness of ozone (O3) + granular activated carbon (GAC), O3 + hydroperoxide (H2O2) + GAC, and GAC processes using a pilot scale plant to remove NOM and geosmin (50–1,000 ng/L), and 2-methylisoborneol (2-MIB: 50–300 ng/L). ...
In this study, ozonation was applied on a fraction of sludge of the recirculation line in a full-scale plant (50,000 population equivalent) at a lower–specific ozone dose (SOD) compared to previous studies. ...
An alternative approach for computing exposure indices, such as AOT40 of the ground-level ozone, is considered in this paper. The aim of the study is to compare it with the traditional way of calculating the exposure indices in order to discover possible weaknesses or strengths of both approaches. ...
The inhibitory effect of ozone and hydrogen peroxide (HP) on urea hydrolysis in stored urine was investigated and compared. Ozone showed less effect on urea hydrolysis due to the complicated composition of urine (including a large amount of urease-producing bacteria) and bacteria regeneration. Ozone concentration and total heterotrophic ...
In the United States, the Clean Air Act of 1970 gave the U.S. Environmental Protection Agency (EPA) responsibility for maintaining clean air for health and welfare. Six parameters are measured routinely in ambient air: SOx, NOx, PM10 (particulate matter less than 10 microns), Pb, CO and ozone. In the 1990 Clean Air Act Amendments, Title 1 expanded the measurements in air to include volatile ...
Introduction A container consisting of a mixed medical waste which had been subjected to an ozonator process was received for analysis. 2. Moisture Content Two sub-samples of the received sample were prepared for determination of the moisture content with reference to BS EN 14774-3:2009. ...
Sometimes nocturnal ozone maxima have been observed, contrasting with the nocturnal minimum values of typical daily profile. The influence of land-sea breeze on the nocturnal ozone maxima was analysed in two urban sites strongly influenced by traffic emissions. Results showed that the increase in nocturnal ozone concentration, as well as its maxima was caused by horizontal advection of ozone, ...
Tropospheric ozone concentrations for Kansas City are well known on a regional scale. The Kansas City, Missouri, ground-level ozone (GLO) project measured outdoor ozone concentrations using passive sensing devices (PSDs) on a neighborhood scale. Highly resolved exposure maps were made based on the detailed air quality observations collected ...
In this plant, rapid sand filtration was placed after ozonation-BAC treatment in Process (A), while it preceded ozonation-BAC treatment in Process (B). Analysis of amoA genes of ammonia-oxidizing archaea (AOA) and bacteria (AOB) combined with nitrification potential test was conducted. ...
By utilizing ultra-violet fluorescence (UVF) method and various original analysis techniques such as ozone injection, the MEXA-1170SX achieves reliable measurements with low interference from other co-existing compounds. ...
A statistical analysis of ozone and PM10 concentration levels in the area of Volos, a medium-sized Greek coastal city, was carried out for the period 2001-2003. The data analysis revealed that the Daily Maximum Hourly (DMH) value of ozone concentration reaches a maximum of 160 µg/m³ during summer; it is observed during afternoon ...
A coupled Eulerian photochemical reaction-transport model and a detailed ozone dry deposition model have been utilised for the estimation of stomatal ozone fluxes over Hungary. Ozone concentrations were modelled on an unstructured triangular grid using a method of lines approach to the solution of the reaction-diffusion-advection equations describing ozone formation, transport and deposition. The ...
A study of the air pollution in the Greek coastal town Volos was performed using the available data of the last ten years. Quantile analysis showed that ozone concentrations during weekends were higher by 5–10% in comparison to those on weekdays, while the inverse was observed for the other pollutants, indicating the occurrence of the so called 'weekend effect'. ...
To better evaluate the models' reliability and cleverness in simulating the long-term dynamics of pollutants in the atmosphere, a comprehensive sensitivity analysis with regard to all model configuration and input data has been carried out. ...