Chlorine Dioxide for Bleaching, Industrial Applications and Water Treatment

Jonnalagadda, Sreekantha B.; Nadupalli, Srinivasu

doi:10.1080/00194506.2014.881032

Cited by 19 publications

(14 citation statements)

References 28 publications

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“…In water treatment facilities, the most used procedure to generate chlorine dioxide is based on the use of sodium chlorite in acid medium in order to increase the conversion and the reaction yield as well as to minimize by‐products formation . Taking into account the literature data, the chlorine dioxide solution was prepared in distilled water (18.4 mL) mixing 6 mL NaClO 2 25 % (w/w) and 4.3 mL HCl 37 % (w/w) . In this way, chlorine dioxide is produced according to the following reaction:

true 5 NaClO_{2} + 4 HCl \to 4 ClO_{2} + 2 normalH_{2} normalO + 5 NaCl .

…”

Section: Methodssupporting

confidence: 91%

“…In addition, chlorine dioxide is a stronger oxidant in respect to chlorine reagents with i) outstanding disinfectant properties , ii) production of low amount of trihalomethanes, and iii) capability to work in a wide pH range . These relevant features have enlarged the market of chlorine dioxide, from swimming pool and wastewater treatment until to food and paper industries .…”

Section: Introductionmentioning

confidence: 99%

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A Miniaturized Carbon Black‐based Electrochemical Sensor for Chlorine Dioxide Detection in Swimming Pool Water

et al. 2020

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The recent trend of using sustainable disinfectants in water treatment sector boosted the employment of chlorine dioxide (ClO2) as green disinfectant. Indeed, this disinfectant is characterised by several attractive features such as the working capability in a wide range of pH and the absence of harmful by‐products. These characteristics confer to chlorine dioxide a prominent position between the disinfectants, thus analytical tools for on‐site detection are needed to customize the water treatment. Herein, we described the development of an innovative and cost‐effective carbon black modified screen‐printed electrode for amperometric quantification of chlorine dioxide in standard solution and in swimming pool water. The carbon black as working electrode nanomodifier allowed for the detection of chlorine dioxide at low applied potential, with linear range of 0.05–20 ppm, and a detection limit of 0.01 ppm. The matrix effect evaluation as well as the recovery study demonstrated the capability of this sensor for a cost‐effective detection of chlorine dioxide in swimming pool water, paving the way for the use of miniaturised electrochemical sensors in water treatment field.

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true 5 NaClO_{2} + 4 HCl \to 4 ClO_{2} + 2 normalH_{2} normalO + 5 NaCl .

…”

Section: Methodssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

A Miniaturized Carbon Black‐based Electrochemical Sensor for Chlorine Dioxide Detection in Swimming Pool Water

et al. 2020

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“…Among the different chemical agents that can be used as alternatives to chlorine for water treatment, chlorine dioxide has received considerable attention (Jonnalagadda & Nadupalli 2014). Chlorine dioxide is a powerful, selective oxidant and broad-spectrum biocide thus pre-oxidation of water with chlorine dioxide improves coagulation and extends filter runs (Gordon & Rosenblatt 2005).…”

Section: Introductionmentioning

confidence: 99%

Investigating use of chlorine dioxide for pre-treatment of raw water from polluted sources at Morton Jaffray Water Treatment Works, Harare, Zimbabwe

Hoko

Toto²,

Mapenzauswa³

et al. 2021

Water Practice and Technology

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Raw water quality deterioration has affected capabilities of Conventional Water Treatment Methods (CWTM) in many countries. CWTM used at Morton Jaffray Water Treatment Works (MJWTW) in Harare have proven ineffective due to pollution. The study investigated the use of Chlorine Dioxide (ClO2) as an alternative pre-treatment chemical. Its effectiveness was compared to that of Calcium Hypochlorite (Ca(CIO)2) used at MJWTW. Grab raw water samples from MJWTW were collected between January and March 2020 and pre-treated with ClO2 and Ca(CIO)2 followed by jar tests with alum to determine pre-treatment effectiveness. Parameters analyzed included Electrical Conductivity (EC), Total Dissolved Solids (TDS), Total Solids (TS), turbidity, Chemical Oxygen Demand (COD), pH and total algae counts (TAC). The raw water had mean TDS (264 mg/L), TS (440 mg/L), turbidity (7.1 NTU), COD (85 mg/L), pH (7.9) and TAC (28.4 × 106 cells/mL). The optimum alum dosage without pre-oxidation was 80 mg/L. Pre-oxidation with 0.075 mg/L ClO2 reduced alum dosage to 60 mg/L. This ClO2 dosage was compared to a Ca(CIO)2 dosage of same concentration and strength at 5 and 15-minutes contact time before alum dosage at 60 mg/L. The treated water quality parameter levels proved better performance for ClO2 compared to calcium hypochlorite.

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“…Chlorine dioxide is a greenish–yellowish gas, and it is known to be highly effective at alkaline pH [ 15 ]. Although this compound is a gas, it is highly soluble in water [ 16 ].…”

Section: Discussionmentioning

confidence: 99%

Intestinal perforation associated with chlorine dioxide ingestion: an adult chronic consumer during COVID-19 pandemic

Arellano-Gutiérrez

Aldana-Zaragoza

Pérez-Fabián

2021

Clin J Gastroenterol

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COVID-19 pandemic is one of the most devastating worldwide crises in recent years. During this pandemic, people have been exposed to products that have not been proven to be safe and effective against COVID-19. We present an adult chronic consumer of chlorine dioxide, in which a fatal outcome is described. This case demonstrates that for people searching products to protect themselves from COVID-19, unregulated access to industrial disinfectants represents a dangerous alternative. To date, there is no scientific evidence to uphold the use of chlorine dioxide or chlorine derivatives as preventive or therapeutic agents against COVID-19. Researchers and general population must take into consideration the fatal possible consequences of not following communications and warnings from health authorities and government institutions.

show abstract

Chlorine Dioxide for Bleaching, Industrial Applications and Water Treatment

Abstract: As an oxidant,

Cited by 19 publications

References 28 publications

A Miniaturized Carbon Black‐based Electrochemical Sensor for Chlorine Dioxide Detection in Swimming Pool Water

A Miniaturized Carbon Black‐based Electrochemical Sensor for Chlorine Dioxide Detection in Swimming Pool Water

Investigating use of chlorine dioxide for pre-treatment of raw water from polluted sources at Morton Jaffray Water Treatment Works, Harare, Zimbabwe

Intestinal perforation associated with chlorine dioxide ingestion: an adult chronic consumer during COVID-19 pandemic

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