oxygen gas Articles
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Characteristics of atomic oxygen produced by a pulsed streamer corona discharge
Various active species can be formed by a pulsed discharge in water, and these active species may play an important role in killing bacteria and degrading organic compounds. In recent years, interest in the formation of OH, O3 and H2O2 has grown enormously. The O is also a very powerful oxidant, but little research has been done on the oxygen radical. In this paper, production of atomic oxygen by ...
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What is the difference between a gas analyser and a gas monitor?
Technically, there does not have to be any difference at all. However, semantically, “analysis” might suggest something more scientific with higher precision and better performance than a simple “monitor” which possibly suggests a more indicative output where precision is of less importance. With that said, the two words “analyser” and “monitor” ...
By OPSIS AB
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Food packaging designs tested using Systech Illinois gas analysis equipment - case study
At the Loughry Campus, Systech Illinois' headspace gas analyzer and oxygen permeation analyzer are used in the testing of food packaging. Located in Cookstown, County Tyrone, Northern Ireland, Loughry Campus offers educational and training programmes in all elements of Food Management. Students have access to a purpose built food technology centre and laboratories where they can develop ...
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A connection between cycle chemistry and condenser configuration: part II
Abstract Air in-leakage into the steam space of a condenser can become stored in pockets of high partial pressures that negatively impact condenser performance and become a source of dissolved gases in the feedwater. These pockets can be configuration caused and generally cannot be eliminated by reducing air ingress or increasing venting capacity. Fortunately, engineering designs are available ...
By Intek, Inc.
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Aeration and Stripping
Aeration in the treatment of water is a process that is used for either of two purposes: either to add oxygen (or possibly another gas) to water (adsorption) or to remove an unwanted gas from water (desorption or stripping). It follows that aeration is most likely to be encountered in the treatment of ground waters. Aeration can be carried out in a variety of ways. The most appropriate ...
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My diffuser goes up to eleven, actually twelve
Abstract Fine pore membrane diffusers arc used extensively worldwide for aeration of activated sludge basins. Aeration can account for as much as 60% of a plant's energy usage (Rosso, et al. 2005). Pore fouling and membrane material degradation can reduce energy efficiency of fine pore membrane diffusers to 50% of the original efficiency after just a few years of operation. Tins work ...
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Inactivation of
Escherichia coli in water by pulsed dielectric barrier discharge in coaxial reactorAn experimental study of ATCC (American Type Culture Collection) 8739 Escherichia coli bacteria inactivation in water by means of pulsed dielectric barrier discharge (PDBD) atmospheric pressure plasmas is presented. Plasma is generated by an adjustable power source capable of supplying high voltage 25 kV pulses, ∼30 μs long and at a 500 Hz frequency. The process was conducted in a ...
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5th-Generation Thermox WDG Flue Gas Combustion Analyzer
"For more than 40 years, we have been a leader in combustion gas analysis," says Mike Fuller, divison VP of sales and marketing and business development for Ametek Process Instruments, "and we believe the WDG-V is the combustion analyzer of the future." WDG analyzers are based on a zirconium oxide cell that provides a reliable and cost-effective solution for measuring excess oxygen in flue gas as ...
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The Benefits of Nitrogen and Carbon Dioxide for Food Processing
The Benefits of Nitrogen and Carbon Dioxide for Food Processing A blend of gases -- carbon dioxide, oxygen, and nitrogen -- help preserve packaged food by reducing the amount of oxygen inside the sealed package. Gas flushing or Modified Atmosphere Packaging, as the process is called, also reduces the amount of processing that food must undergo. This preserves the quality and nutrient content of ...
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Monitoring the oxygen content in bio-methane-to-grid supply
Orbital utilise the EC91 ATEX oxygen analyser from Systech Illinois to accurately monitor the oxygen content in the purified bio-methane gas prior to it being injected into the national grid gas network In September 2010, Orbital installed the gas monitoring and treatment plant on the UK’s very first large-scale bio-methane-to-grid production facility. This site was designed specifically ...
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Portable gas detector working principle
Background: Portable gas detector is a kind of instrument that can quickly detect the gas concentration in the environment in the field. It can be used in industry, environmental protection, health, military and other fields. This paper introduces the classification, working principle, application scenario and development trend of portable gas detector. Classification of portable gas detector ...
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Selective catalytic reduction of nitric oxide over copper oxide and cerium oxide catalysts
The selective catalytic reduction of nitric oxide with hydrocarbons in an oxygen-containing simulated flue gas has been investigated for a series of copper oxide and cerium oxide alumina supported catalysts at 600–775 K. The activity of these catalysts for the reduction of NO by methane or propane has been investigated in simulated flue gas. The effects of sulphates on the catalyst, and of water ...
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Headspace gas and oxygen permeation analysis of food packaging designs - Case Study
Food packaging designs tested using Systech Illinois gas analysis equipment At the Loughry Campus, Systech Illinois' headspace gas analyzer and oxygen permeation analyzer are used in the testing of food packaging. Located in Cookstown, County Tyrone, Northern Ireland, Loughry Campus offers educational and training programmes in all elements of Food Management. Students have access to a purpose ...
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Applying Refrigerant Codes
Administering limits for the amount of refrigerant that can be discharged into a space in the event of a leak Some years ago, two young and inexperienced technicians were called to work on a large refrigerant system. The system was not working properly because of an incorrectly installed valve. In their attempt to fix the system, the technicians caused a leak in the piping at the tank, which ...
By Evapco Inc.
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Why the use of a CO2 monitor may not be the best solution for protecting workers against leaks from beverage dispensing systems in the fast food industry
Carbon Dioxide (CO2) is the primary compressed gas used for dispensing beverages at fast food chains. This gas is also used in restaurants, gas stations, and grocery stores. When CO2 leaks into a confined space or basement, it creates a very unsafe environment for employees because it lowers the concentration of breathable oxygen. History seems to repeat itself all too often while dealing ...
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Improve fed-batch fermentation by measuring mass flow
How can my fermentation process yield a more consistent product? Any biochemical process is only as consistent as the parameters that control it. What makes a fed-batch fermentation process particularly susceptible to variation is the fact that it relies on many critical parameters. With an aerobic fermentation process, temperature, pO2, substrate consumption, and pH are primary critical ...
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Carbon Molecular Sieve Dessicant
Carbon Molecular Sieve used in the PSA Nitrogen generation, the Nitrogen generation by Pressure Swing Adsorption (PSA) process is a technology used to separate nitrogen from a mixture of gases under pressure according to the special selective adsorption characteristics of the Carbon Molecular Sieves (CMS).The Carbon molecular sieve is a material containing tiny pores of a precise and uniform size ...
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Low-frequency plasma activation of nylon 6
Abstract In the study reported in this paper, a series of reproducible conditions were employed to uniformly functionalize nylon 6 surfaces using a commercially available, low-frequency (40 kHz), low-pressure plasma system, utilizing oxygen plasma as a reactive gas. Initially, the plasma-treated samples were investigated using static contact angle measurements, showing a progressive increase in ...
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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 ...
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Process Heating - Temperature Measurement in Metal Reheat Furnaces
Read our latest article in Process Heating where Manfred Hayk, Global Infrared Product Manager, explains how the starting point for higher product quality is knowing that the temperature is homogenous and consistent and how thermal-imaging systems can deliver highly detailed images, which are fully radiometric, enabling accurate temperature readings within their entire field of view. Reheat ...
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