chlorine dioxide Articles
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Using RuO2 anode for chlorine dioxide production in an un-divided electrochemical cell
Chlorine dioxide is a well known powerful disinfectant. Although there are several chemical and electrochemical methods developed for on-line chlorine dioxide generation, the details are mostly confined as patents. We studied in this work the electrochemical generation of dissolved chlorine dioxide from an un-buffered solution of sodium chlorite and sodium chloride mixture in an un-divided ...
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Chlorine Dioxide – dispelling the myths
The internet is an incredibly useful research tool. It allows us to source and share information instantaneously. Unfortunately, this means that myths and misconceptions can spread very quickly and obscure the truth. In this post, we aim to tackle some of the myths that surround chlorine dioxide, and how this differs from our chlorine dioxide based product CleanOxide. Myth 1: Pure chlorine ...
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Modelling approach to quickly assess polyethylene ageing by chlorine dioxide in distribution systems
A prediction model for the life of polyethylene (PE) has been developed as a function of chlorine dioxide concentration and pressure. It can be coupled with an existing hydraulic model covering chlorine dioxide residuals and pressure values in the network. It allows a quick identification of the areas of highest PE failure risk. The methodology is applied successfully to a real distribution ...
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4 reasons chlorine dioxide should be your preferred sanitiser
To the lay-person, a commercial kitchen is just a floor and some equipment that needs a good clean regularly. They don’t understand the dangers of bacterial contamination and how easy it is for food to be affected. Most commercial kitchens will use bleach, or a similar sanitiser, to keep their space safe. Today, we will share with you the top five reasons you should be using chlorine ...
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Accidental Releases Analysis for Toxic Aqueous Solutions
As a result of the cluster rule for the control of the hazardous air pollutants, pulp and paper mills are in the process of further substituting chlorine with aqueous chlorine dioxide for their bleaching operations. In addition, ammonia aqueous solutions are applied by paper mills in various processes. An evaporation model including both heat and mass transfer for aqueous solutions has been ...
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Accidental releases analysis for toxic aqueous solutions
Abstract As a result of the cluster rule for the control of the hazardous air pollutants, pulp and paper mills are in the process of further substituting chlorine with aqueous chlorine dioxide for their bleaching operations. In addition, ammonia aqueous solutions are applied by paper mills in various processes. An evaporation model including both heat and mass transfer for aqueous solutions has ...
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Simultaneous reduction of by-products of chlorine dioxide and chlorine using Fe(II)–Al(III) coagulant mixture
Ferrous iron has been considered very useful for removal of chlorite, a by-product of chlorine dioxide. However, a serious problem can occur associated with high residual iron concentrations in water after Fe(II) treatment, especially at weak acidic condition (pH 6), having a higher capacity of chlorite reduction. Simultaneous removal of chlorite, dissolved iron, and humic acids was achieved with ...
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Change in genotoxicity of wastewater during chlorine dioxide and chlorine disinfections and the influence of ammonia nitrogen
The effects of chlorine dioxide and chlorine disinfections on the genotoxicity of different biologically treated sewage wastewater samples were studied by umu-test. The experiment results showed that when chlorine dioxide dosage was increased from 0 to 30 mg/L, the genotoxicity of wastewater first decreased rapidly and then tended to be stable, while when the chlorine dosage was increased from 0 ...
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Oxidative transformation of oxcarbazepine by Cl2, ClO2 and O3: characteristics and pathways
In this research, the degradation efficiency, mechanism and intermediates’ toxicities of oxcarbazepine (OXC) upon chlorination, chlorine dioxide oxidation and ozonation were investigated. Results showed that three degradation approaches followed second-order kinetics, and ozonation had the highest removal efficiency both of OXC and dissolved organic carbon (DOC). Reaction intermediates were ...
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Case study - Elemental chlorine free kraft pulp bleaching and chlorine dioxide scrubbing
Chlorine Dioxide - CIO2 Scrubber Packing at Kraft Pulp Mills Elemental Chlorine Free - ECF - bleaching of wood pulp using Chlorine Dioxide, CIO2, as the primary bleaching agent eliminates dioxin emissions. This is a reflection of the fact that as a bleaching agent CIO2 is 10 times more reactive than elemental Chlorine, Ck. As a powerful oxidizing agent CIO2 must be generated on site - it is too ...
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Monochloramine and chlorine dioxide for controlling
Legionella pneumophila contamination: biocide levels and disinfection by-product formation in hospital water networksLegionella colonization in hospital hot water distribution networks was evaluated following 36 months of continuous treatment with monochloramine and compared with chlorine dioxide. Nitrite, nitrate, chlorite, chlorate, bromide, trihalomethanes and haloacetic acids as well as the biocide concentration at sampled points were measured. Only 8/84 samples treated with monochloramine were found ...
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Catalytic oxidation and spectroscopic analysis of simulated wastewater containing acid chrome blue K by using chlorine dioxide as oxidant
An activated carbon-MnO2 catalyst was prepared by the dipping-calcination method using activated carbon as catalyst support. The catalyst was used for the catalytic oxidation of simulated acid chrome blue K wastewater. The COD removal efficiency and decolor efficiency by catalytic oxidation are 72.0% and 87.8%, respectively, at the condition of wastewater's COD is 2,418 mg/L, the optimum pH value ...
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Modeling and analysis of chlorine dioxide, chlorite, and chlorate propagation in a drinking water distribution system
The drinking water distribution system of Cremona, in the north of Italy, was monitored for 6 years (2006–2011) analyzing chlorine dioxide, chlorite, and chlorate concentrations. The software Epanet 2.0 (USEPA) was applied to the distribution system. The mixing zone of the water coming from the two drinking water treatment plants, respectively located to the west and east of the city, was ...
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Saturated sodium & dissolved gas resistant pH sensors - Case Study
Saturated Sodium Resistant pH glass element and Dissolved Gas Resistant Solid State Polymer Reference System are specifically engineered for Chlor-Alkali and functionally similar Process Applications High Quality PEEK plastic is not damaged by presence of dissolved oxidizing gases such as chlorine and chlorine dioxide Vastly superior lifetime due to custom engineering and component selection ...
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Virginia Water Treatment Plant Remains in Compliance and Improves Safety After Foreign Supplier Abruptly Ends Service - Case Study
Plant Converts to EPA-Approved Sodium Chlorite solution to Generate Chlorine Dioxide for Treatment of 2 to 3 MGD Situation This Mid-Atlantic water plant’s treatment system used gaseous chlorine and dry sodium chlorite to form chlorine dioxide. Chlorine dioxide is fed to the raw water and used to reduce TOC, iron and manganese, TTHM and HHA5 at this facility. Due to the storage and ...
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Comparison of commercial analytical techniques for measuring chlorine dioxide in urban desalinated drinking water
Most drinking water industries are closely examining options to maintain a certain level of disinfectant residual through the entire distribution system. Chlorine dioxide is one of the promising disinfectants that is usually used as a secondary disinfectant, whereas the selection of the proper monitoring analytical technique to ensure disinfection and regulatory compliance has been debated ...
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Biocidal Products Regulation - White Paper
The European Biocidal Products Regulation (Regulation (EU) No. 528/2012) stipulates that biocidal products may only be made available and used on the market if they are certified in accordance with this regulation. Unlike the previous biocidal products legislation, so-called “in-situ” procedures such as electrolysis, chlorine dioxide and ozone now also fall under this certification ...
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How to care for your water tank
Caring for your water tank not only makes it last longer, it keeps the water safe for you and your family. Follow our care tips and you will always be able to rely on your tank. Inspect the tank every 3 months Inspecting your tank helps you identify leaks and damage. Repairing these early goes a long way to keeping your water tank safe. Other things you should look for include: Guttering ...
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Efficacy of chlorine, chlorine dioxide and ultraviolet radiation as disinfectants against plant pathogens in irrigation water
Abstract A number of disinfection treatments are available to treat irrigation water to reduce the risk of plant disease. However, limited published studies had compared the efficacy of disinfection treatments on a range of plant pathogen species, on their various life stages and in different water qualities. In this study, propagules (spores, mycelium, cells) of eight plant pathogens including ...
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Choosing the Right Pumped Gas Detector
Before you purchase or rent a pumped gas detector, make sure you’re getting the right one. The best detectors for industrial applications should have the following parts: Probe: A stainless-steel probe or a high-temperature stable probe is necessary when using the detector in a cramped space. Tubing: Tubing is essential for vertical, thin cavities. Urethane tubing is common, ...
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