Interaction between E. coli inactivation and DBP-precursors — dihydroxybenzene isomers — in the photocatalytic process of drinking-water disinfection with TiO2

Rincon, A. G.; Pulgarín, C.; Adler, N.; Péringer, Paul

doi:10.1016/s1010-6030(01)00374-4

Cited by 137 publications

(62 citation statements)

References 25 publications

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“…Advanced oxidation processes represent a group of techniques used for the treatment of water characterized by the generation of radicals, such as the hydroxyl radical (OH ) and may be an alternative to chlorine disinfection (De la Cruz et al, 2012;Marugan et al, 2008;Rincon et al, 2001;Pulgarin and Kiwi, 1996). UV/H 2 O 2 is an AOP based on the combination of UV light and hydrogen peroxide, generating OH radicals.…”

Section: Introductionmentioning

confidence: 99%

Comparative effect of simulated solar light, UV, UV/H2O2 and photo-Fenton treatment (UV–Vis/H2O2/Fe2+,3+) in the Escherichia coli inactivation in artificial seawater

et al. 2013

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Fe 2þ and 10 mg L À1 of H 2 O 2 , led to the fastest bacterial inactivation kinetics. Using H 2 O 2 / UV 254 high disinfection rates were obtained similar to those obtained with photo-Fenton under UV 254 light. In Milli-Q water, the rate of inactivation for Escherichia coli was higher than in Leman Lake water and seawater due to the lack of inorganic ions affecting negatively bacteria inactivation. The presence of bicarbonate showed scavenging of the OH radicals generated in the treatment of photo-Fenton and H 2 O 2 /UV 254 . Despite the negative effect of inorganic ions, especially HCO 3 -, the disinfection treatments with AOPs in lake water and seawater improved significantly the disinfection compared to light alone (simulated sunlight and UV 254 ). In the treatment of photo-Fenton with simulated sunlight, dissolved organic matter had a beneficial effect by increasing the rate of inactivation. This is associated with the formation of Fe 3þ -organo photosensitive complexes leading to the formation of ROS able to inactivate bacteria. This effect was not observed in the photo-

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Section: Introductionmentioning

confidence: 99%

Comparative effect of simulated solar light, UV, UV/H2O2 and photo-Fenton treatment (UV–Vis/H2O2/Fe2+,3+) in the Escherichia coli inactivation in artificial seawater

et al. 2013

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“…Nevertheless, usage of other disinfectants has also been observed to form DBPs and present regulations attempt to stabilize the hazards between microbial pathogens and DBPs. DBPs comprise the following (Weiner, 2012):  Halogenated organic compounds, such as THMs, haloacetic acids, haloketones, and other halogenated compounds that are produced firstly while chlorine or ozone (in the presence of bromide ion) are utilized as disinfectant (Bougeard et al, 2008;Xie et al, 2015;Ye et al, 2012;Kanokkantapong et al, 2006;Navalon et al, 2009;Aydin et al, 2012;Rincón et al, 2001).  Organic oxidation by-products, such as aldehydes, ketones, assimilable organic carbon, and biodegradable organic carbon.…”

Section: Disinfectionmentioning

confidence: 99%

Disinfection and DBPs removal in drinking water treatment: A perspective for a green technology

Ghernaout

2018

Int. j. adv. appl. sci.

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The generation, monitoring, and health impacts of disinfection by-products (DBPs) in potable water are problems of worldwide worry. Several nations, besides the World Health Organization, possess regulations and/or guidelines on bearable levels of DBPs in water. Since drinking water is frequently remediated using a chemical killing agent, DBPs are pollutants to which several humans are unprotected. On account of the health impacts linked to subjection to chlorinated water and/or some DBPs, the water manufacturing has performed great endeavors to equilibrate killing pathogens and DBP monitoring. Large survey has been realized on rising DBPs of health and regulatory worry. In spite of the fact that the attention on DBPs was previously on chlorine-and bromine-containing carbonaceous DBPs, appearing DBPs comprise iodine-containing species, also halogenated and non-halogenated nitrogenous DBPs. In addition, latest toxicity experimentation has proposed that certain of the more recent PBPs are of more elevated toxicity than some of the regulated chemical products. Therefore, survey has been realized to better comprehend how to costeffectively monitor a large interval of regulated and appearing DBPs. This comprises the usage of advanced remediation and killing pathogens methodologies. This paper shows certain of the newest research works at comprehending these significant DBP-related problems. Disinfection is killing microorganisms present in water; but, it is as well killing human beings drinking water by poisonous DBPs. Using chemicals for water treatment is finally a lost cause.

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“…Other effects of photocatalysts include damage to the respiratory system within the cells and loss of fluidity and increase ion permeability in the cell membrane [55,[84][85][86]. The exposure time required to achieve desired reductions is shorten by using solar photocatalytic materials with containers.…”

Section: Enhancement For Solar Disinfection Of Watermentioning

confidence: 99%

Drinking Water Disinfection by Solar Radiation

Teksoy¹,

Eleren²

2017

eer

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A primary concern of developing countries throughout the world is that of obtaining safe drinking water. Waterborne diseases are still common in developing countries since drinking water sources are contaminated and the conventional rural water treatment plants are often inefficient to produce safe drinking water. This situation in developing countries is a major problem in terms of preventing public health. It is estimated that diarrhea accounted for 99% of the 69 million deaths among children before the age of five. Inadequate operation and maintenance after installations caused by a lack of trained operators, by a treacherous supply of chemicals and spare parts, and by financial problems lead to produce unhealthy drinking water. Since major urban water supplies are also not always capable of maintaining a regular supply of qualitatively good water, the distributed water is often considered unsafe for direct consumption. Treatment of water at the household level (etc. boiling) or purchasing of mineral water for consumption is more real than an exception in urban areas of developing countries. Recently, another small-scale approach using the lethal effect of sunlight has gained importance to sanitary contaminated water. Solar disinfection (SODIS) is one of the simplest methods for providing acceptable quality drinking water and consists of filling transparent containers (plastic bags, plastic bottles or glass bottles) with water and exposing the containers to sunlight for approximately 6 hours. Because of the low cost and easy usage, solar disinfection is commonly used in developing countries in Asia, Africa and South America. The aim of this literature review is to give information about solar disinfection mechanism, to compare the efficiency of solar disinfection on different microorganisms based on the past studies, and to discuss the several applications of solar disinfection in the world.

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Interaction between E. coli inactivation and DBP-precursors — dihydroxybenzene isomers — in the photocatalytic process of drinking-water disinfection with TiO2

Cited by 137 publications

References 25 publications

Comparative effect of simulated solar light, UV, UV/H2O2 and photo-Fenton treatment (UV–Vis/H2O2/Fe2+,3+) in the Escherichia coli inactivation in artificial seawater

Comparative effect of simulated solar light, UV, UV/H2O2 and photo-Fenton treatment (UV–Vis/H2O2/Fe2+,3+) in the Escherichia coli inactivation in artificial seawater

Disinfection and DBPs removal in drinking water treatment: A perspective for a green technology

Drinking Water Disinfection by Solar Radiation

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