Chemical & Biological Dynamics

****!!!!**** "The photochemical decomposition is characterized by small quantities of O3+ atoms and of equal amounts of chlorine atoms and molecular oxygen, the latter originating in the reaction: ClOO --- Cl + O2" "The isomer ClOO is formed by the geminate recombination of ClO and O, a process which is twice as important as diffusion of the fragments into the mass of the solution an done which represents 30% of the decomposition of the chlorine dioxide. Under our experimental conditions, the lifetime of the ClOO is less than one microsecond."

The U.S. Department of Energy's Office of Scientific and Technical Information

The mechanism and toxicity of TCS degradation by ClO2 was investigated. Intermediate products during the oxidation process were identified by GC/MS and LC/MS. A microtox bioassay and a SOS/umu assay were employed to evaluate the acute toxicity and genotoxicity of the resulting solutions d …

The explosion characteristics of chlorine dioxide gas have been studied for the first time in a cylindrical exploder with a shell capacity of 20 L. The experimental results have indicated that the lower concentration limit for the explosive decomposition of chlorine dioxide gas is 9.5% ([ClO(2)]/[ai …

The isolation of a highly resistant vegetative Gram-positive bacterium to a highly reactive oxidizing agent is worrying. Understanding the mechanisms conferring such resistance is essential to effectively control such bacterial isolates. Here, we postulate that there are still mechanisms of bacteria …

Structure, properties, spectra, suppliers and links for: Chlorine dioxide, 10049-04-4.

{Mentions active CD amts in Oxine} "It is clear from the results that *inactivated* ClO2 has no measurable sporidical properties."

**Derived from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7403125/

***Tailing occurs even at constant ClO2 concentrations. The cause for tailing is the deposition of an adduct onto the virus capsid over the course of the experiment, which protects the viruses. This adduct could easily be removed by washing, which restored the susceptibility of the viruses to ClO2. This finding highlights an important ***shortcoming of ClO2, namely its self-limiting effect on virus disinfection***. It is important to take this effect into account in treatment applications to ensure that the water is sufficiently disinfected before human consumption.

1982

The emergence of waterborne viruses with resistance to disinfection has been demonstrated in the laboratory and in the environment. Yet, the implications of such resistance for virus control remain obscure. In this study we investigate if viruses with ...

{Includes CD} Oxidation and reduction (redox) reactions are very important in drinking water. Oxidation-reduction potential (ORP) measurements reflect the redox state of water. Redox measurements are not widely made by drinking water utilities in part because they are not well understood. The objective of this study was to determine the effect of oxidant type and concentration on the ORP of carbonate buffered water as a function of pH. Oxidants that were studied included: chlorine, monochloramine, potassium permanganate, chlorine dioxide, and oxygen. ORP decreased with increasing pH, regardless of the ox...

Provided are apparatuses and methods for making chlorine dioxide on demand by converting a chlorine dioxide generating solution into chlorine dioxide by exposure to UV light.

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Request PDF | On Jan 1, 2002, S. Dobson and others published Chlorine dioxide (Gas) | Find, read and cite all the research you need on ResearchGate

The Science Behind the Formula Anti Bacterial Effectiveness General Detergent Cresol, Phenol Sodium Hypochlorite (Bleach) Ethanol (Alcohol) Virus Protect+ (Chlorine Dioxide) 99.99%

An aqueous stabilised chlorine dioxide solution for use as a universal biocide. The stabilized solution preferably, but not necessarily, includes: (A) an effective stabilising amount of ClO 2 − ions; (B) an effective biocidal amount of ClO 2 ; (C) an acidulator sufficient to release ClO 2 , in a safe manner, and (D) an amount of water qs. The solution may, but not necessarily, have a molar ratio of components (A):(B) that is from 20:1 to 1:20.

(2017). Chlorine dioxide oxidation of Escherichia coli in water – A study of the disinfection kinetics and mechanism. Journal of Environmental Science and Health, Part A: Vol. 52, No. 7, pp. 598-606.

Benzalkonium chlorides (BACs) are chemicals with widespread applications due to their broad-spectrum antimicrobial properties against bacteria, fungi, and viruses. This review provides an overview of the market for BACs, as well as regulatory measures ...

****"the unit consumption of disinfection agent per unit organic matters (represented by ClO2/DOC) is in the following sequence hydrophobic substance > hydrophilic substance > non-acid hydrophilics. It indicated that larger molecular organic precursors had larger consumption of disinfectant. We also discovered that after the reaction of the three different organic substances with chlorine dioxide, the largest amount of disinfection by-products were generated by the non-acid hydrophilics."

This paper investigated the encapsulation complex (EC) of chlorine dioxide (ClO2) in α-cyclodextrin. The encapsulation process was evaluated with vary…