Spectroscopic Characterization and the pH Dependence of Bactericidal Activity of the Aqueous Chlorine Solution

Nakagawara, Shunji; Goto, Takeshi; Nara, Masayuki; Ozawa, Y.; Hotta, Kunimoto; Arata, Yoji

doi:10.2116/analsci.14.691

Cited by 158 publications

(107 citation statements)

References 6 publications

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“…[117][118][119] [116] The amount of O 2 evolvedi nt he anode cell containing seawater (12.7 mmol) after photoirradiation for 1hwas more than three times larger than that evolvedi nt he anode cellc ontaining pure water (3.7 mmol). [116] Thus, the enhancement of photocatalytic productiono fH 2 O 2 in seawater ( Figure 13) resultsf rom the Cl À -catalyzed photooxidation of water.…”

Section: Hydrogenfrom Black Sea Deep Watermentioning

confidence: 95%

Fuel Production from Seawater and Fuel Cells Using Seawater

2017

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Seawater is the most abundant resource on our planet and fuel production from seawater has the notable advantage that it would not compete with growing demands for pure water. This Review focuses on the production of fuels from seawater and their direct use in fuel cells. Electrolysis of seawater under appropriate conditions affords hydrogen and dioxygen with 100 % faradaic efficiency without oxidation of chloride. Photoelectrocatalytic production of hydrogen from seawater provides a promising way to produce hydrogen with low cost and high efficiency. Microbial solar cells (MSCs) that use biofilms produced in seawater can generate electricity from sunlight without additional fuel because the products of photosynthesis can be utilized as electrode reactants, whereas the electrode products can be utilized as photosynthetic reactants. Another important source for hydrogen is hydrogen sulfide, which is abundantly found in Black Sea deep water. Hydrogen produced by electrolysis of Black Sea deep water can also be used in hydrogen fuel cells. Production of a fuel and its direct use in a fuel cell has been made possible for the first time by a combination of photocatalytic production of hydrogen peroxide from seawater and dioxygen in the air and its direct use in one‐compartment hydrogen peroxide fuel cells to obtain electric power.

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Section: Hydrogenfrom Black Sea Deep Watermentioning

confidence: 95%

Fuel Production from Seawater and Fuel Cells Using Seawater

2017

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“…When dissolved in water, chlorine converts to an equilibrium mixture of chlorine, hypochlorous acid (HOCl), and hydrochloric acid (HCl). [1] Cl 2 + H 2 O ⇌ HOCl + HCl …”

Section: Chlorinationmentioning

confidence: 99%

“…The advance treatment technologies and processes, reducing concentration of the pollutants and also give scope for recovery and recycle of water and salt from effluents, which help conserve natural sources. [1] The chemical treatments and advanced oxidation are mainly used to eliminate the dyes from textile effluents and do not bring any solutions to remove strong quantities of salt present in the complex effluent in textiles. [2] [3] Enzymatic catalysis, coagulation/flocculation and nanofiltration processes are used for decolourization of the reconstituted textile effluent and nanofiltration seems to be an efficient process in colour removal of textile wastewater.…”

Section: Introductionmentioning

confidence: 99%

A Case Study on Importance of Salt Recovery Plant in Textile Dyeing Industry

Zerin¹,

Rasel²

2017

IJEE

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Abstract:This study reveals recover salt from waste water as saline water, application of salty or saline water on dyeing of cotton fabric with reactive dyes and compare it with the samples dyed using ground water, compare the spectro photometric evaluation, color fastness to wash and rubbing. This study is done in the laboratory of Niagra Textiles Ltd. Bangladesh. It has been found that the results are satisfactory for the fabric dyed with both type of water.

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“…When the EW is in contact with the organic matter or is diluted with ordinary tap water by reverse osmosis, water becomes again "normal". As a result, the impact on the environment is much less negative compared to the use of chemical disinfectants, the use of which is also linked to the difficulties of transporting and storing potentially hazardous chemicals (Nakagawara et al 1998;Tanaka et al 1999). On the other hand, the main disadvantage is that EW rapidly loses its antimicrobial activity.…”

Section: Introductionmentioning

confidence: 99%

Electrolysed Water in the Food Industry as Supporting of Environmental Sustainability

Colangelo

Caruso

Favati

et al. 2015

The Sustainability of Agro-Food and Natural Resource Systems in the Mediterranean Basin

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Food safety is a priority for the food industry and to achieve this result a correct plant sanitation programme is of the utmost importance. Among various disinfection techniques, an emerging one is represented by the use of electrolysed water (EW) as the disinfecting agent. The use of EW is compliant with the desire to find alternatives to chlorination and heat treatments, representing a green cleaning alternative to toxic disinfectants. EW is an activated liquid, obtained by passing a diluted saline solution (NaCl, KCl or MgCl 2 ) through an electrolytic cell, thus causing the production from the anode side of electrolysed oxidising water, containing high dissolved oxygen, free chlorine and characterised by a low pH (2.3-2.7) and a high oxidation-reduction potential (ORP > 1,000 mV). At the same time from the cathode side electrolysed reduced water is produced, with high pH (10.0-11.5), high dissolved hydrogen and low ORP (À800 to À900 mV). Unlike other chemical disinfectants, EW is not harmful for skin and mucous membranes and is quite easy to handle. Furthermore, the use of EW is relatively inexpensive and, above all, is a sustainable technique. Currently used sanitisers (e.g. glutaraldehyde, formaldehyde, etc.) are effective, but their adverse effects on the environment are well known. Differently from these chemicals, the use of EW has a reduced impact on the environment and because of its properties, it may find several applications in the food industry. In this work, the characteristics and some EW applications as sustainable sanitation technique applied in the food industry are reported and discussed.

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Spectroscopic Characterization and the pH Dependence of Bactericidal Activity of the Aqueous Chlorine Solution

Cited by 158 publications

References 6 publications

Fuel Production from Seawater and Fuel Cells Using Seawater

Fuel Production from Seawater and Fuel Cells Using Seawater

A Case Study on Importance of Salt Recovery Plant in Textile Dyeing Industry

Electrolysed Water in the Food Industry as Supporting of Environmental Sustainability

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