The influence of different disinfectants on mutagenicity and toxicity of urban wastewater

Monarca, Silvano; Feretti, Donatella; Collivignarelli, Carlo; Guzzella, Licia; Zerbini, Ilaria; Bertanza, Giorgio; Pedrazzani, Roberta

doi:10.1016/s0043-1354(00)00192-5

Cited by 144 publications

(91 citation statements)

References 36 publications

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“…of residual ozone exposure). Similar results have been reported by Monarca et al [20], who studied the effect of ozonated secondary effluents (at specific optimized ozonation conditions concerning certain microbiological parameters) on bacteria Vibrio fischeri. Nakamuro et al [21], Ono et al [22] al.…”

Section: Introductionsupporting

confidence: 89%

“…Results obtained from other studies are rather conflicting and indicate that ozonation may either increase or decrease the toxicity of samples. Monarca et al [20] found that toxicity modification of ozonated urban wastewaters depended significantly upon the characteristics of the raw samples. The toxicity of summer samples was increased after ozonation (ICF 50 was decreased), whereas the toxicity of winter samples was significantly decreased (4-5-fold ICF 50 increase) after ozonation using similar treatment conditions.…”

Section: Effect Of Ozone On Test Organism In Secondary Effluentmentioning

confidence: 99%

“…Ozonation has been used to meet discharge requirements for coliform and virus inactivation since the 1970s [16]. Frequent Ozonation for treatment of wastewater and drinking water is due to its ability to oxidize complex organic molecules, phenols, Endocrine Disruptive Chemicals (EDCs) and pharmaceuticals [17][18][19][20][21]. In combination of microbial disinfection make ozonation an attractive alternative for advanced wastewater treatment [22].…”

Section: Introductionmentioning

confidence: 99%

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Removal of Organic Content and Color from Secondary Treated Wastewater in Reference with Toxic Potential of Ozone During Ozonation

Mani¹

2011

Hydrol Current Res

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Present study was conducted to evaluate the impact of ozonation on the quality improvement of Secondary Treated wastewater at Varanasi, in India. Physico-chemical parameters such as BOD, COD, TOC, UV 254 , color and microbiological parameters such as E. coli, fecal coli. & total coliform disinfection parameters were used to evaluate the efficiency of ozone to upgrade secondary effluent quality. Experimental results revealed that 10 mgL -1 O 3 for 5 minutes exposure duration was found most suitable dose and contact time for the significant reduction of physicochemical parameters of secondary treated wastewater such as BOD, COD, TOC, UV 254 and color i.e. 30%, 14.3% 45% & 60% respectively as well as it enhanced the biodegradability more than 50% in the treated water. Our data also revealed that this applied dose and exposure time is responsible for the highest degradation of microbiological parameters i.e. >98%. Other than this the toxic response of test species was influenced mainly by the dose and exposure time. The acute toxic effect after ozonation was observed on V. fischeri and found that toxic effect of the secondary effluent was decreased after applied dose and exposure duration. Results supported the expectation that the process of Ozone might enhance the overall treatment efficiency of secondary effluent treatment.

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Section: Introductionsupporting

confidence: 89%

Section: Effect Of Ozone On Test Organism In Secondary Effluentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removal of Organic Content and Color from Secondary Treated Wastewater in Reference with Toxic Potential of Ozone During Ozonation

Mani¹

2011

Hydrol Current Res

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“…Devido ao alto potencial de oxidação do ozônio, há certa preocupação quanto à natureza dos subprodutos formados e sua possível toxicidade (MONARCA et al, 2000;PARASKEVA & GRAHAM, 2002).…”

Section: Parâmetrounclassified

Desinfecção de efluente anaeróbio com o uso de ozônio/cloro

Silva

Daniel

2015

Eng. Sanit. Ambient.

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RESUMOO principal objetivo desta pesquisa foi estudar o processo de oxidação, a eficiência da inativação de coliformes e a formação de subprodutos da ozonização, associado com a desinfecção de efluente sanitário anaeróbio proveniente de um reator UASB. Tal evento foi realizado por meio da aplicação das dosagens de ozônio de 5,0 mg.O 3 .L -1 + 10 mg.Cl 2 .L -1 (ensaio 1); ABSTRACTThe main purpose of this research was to study the oxidation process, the coliform inactivation effectiveness, and the formation of ozone disinfection byproducts, which were associated with disinfection of the anaerobic sanitary wastewater effluent from a UASB reactor. Nos últimos anos, em função da maior atenção dada às saúdes ambiental e pública, houve um aumento da preocupação com a possível toxicidade dos agentes desinfetantes e dos respectivos subprodutos da desinfecção.

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“…Sodium hypochlorite is commonly used as a root canal irrigant to disinfect the canal prior to filling and placement of a cap (Bystrom and Sundqvist 1983). Though sodium hypochlorite is a widely used substance for disinfection, when it is added to water or waste water, the solution easily reacts with organic material, for example humic and fulvic acids in surface water, causing the generation of many volatile and nonvolatile disinfection by-products toxic for the aquatic environment (Emmanuel et al 2004) and with mutagenic and/or carcinogenic activity on human and aquatic organisms (Monarca et al 2000;Guzzella et al 2004;Crebelli et al 2005). These organic halogenated compounds include haloalkenes, haloacetic acids, haloacetonitriles, haloketones and haloaldehydes, bromoform, dichloroacetic acid, dibromoacetic acid, 5-methyl-2-furancarboxyaldehyde, 3-acetyl-dihydro-2(3H)-furanone .…”

Section: Introductionmentioning

confidence: 99%

Cytotoxic and genotoxic effects of sodium hypochlorite on human peripheral lymphocytes in vitro

2009

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Chlorination is widely used method in the disinfection of drinking and utility water worldwide. In this study, cytotoxic and genotoxic effects of sodium hypochlorite were investigated by the cytokinesis-block micronucleus assay and chromosomal aberration analysis on human peripheral lymphocytes in vitro. A significant increase in chromosomal aberration frequency was observed in all treatments of NaOCl (0.030, 0.065, 0.100, 0.25, 0.5, 1, 2, 4 lg/mL) at 24 and 48 h compared with the negative control and mitomycin C (MMC, 0.3 lg/mL), which was used as a positive control. NaOCl significantly increased the frequency of micronuclei in a dose dependent manner. The results showed that there was a significant correlation between NaOCl concentration and chromosomal aberration, micronuclei frequency, necrotic cells, apoptotic cells and binucleated cells.

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The influence of different disinfectants on mutagenicity and toxicity of urban wastewater

Cited by 144 publications

References 36 publications

Removal of Organic Content and Color from Secondary Treated Wastewater in Reference with Toxic Potential of Ozone During Ozonation

Removal of Organic Content and Color from Secondary Treated Wastewater in Reference with Toxic Potential of Ozone During Ozonation

Desinfecção de efluente anaeróbio com o uso de ozônio/cloro

Cytotoxic and genotoxic effects of sodium hypochlorite on human peripheral lymphocytes in vitro

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