Minimization of organic pollutant content in aqueous solution by means of AOPs: UV- and ozone-based technologies

Kušić, Hrvoje; Koprivanac, Natalija; Božić, Ana Lončarić

doi:10.1016/j.cej.2006.07.011

Cited by 172 publications

(67 citation statements)

References 31 publications

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“…Literature data have reported that ozone disinfection efficiency has little dependence on the pH range of domestic effluents, which is between 6.0 and 8.0 (Langlais et al, 1991;Silva et al, 2010). All but one of the samples had pH measurements within this range (6.0 -8.0) and, therefore, there was no pH influence on the inactivation of total coliform and E. coli.…”

Section: Total Coliform and E Colimentioning

confidence: 88%

“…The formation of aldehydes during ozonation is well established (Langlais et al, 1991;Melin & Odegaard, 2000;Huang et al, 2005), and the main aldehydes formed are formaldehyde (H 2 CO), acetaldehyde (C 2 H 4 O), glyoxal (C 2 H 2 O 2 ) and methylglyoxal (C 3 H 4 O 2 ), all of which are potentially carcinogenic and mutagenic. These compounds have been observed to cause tumors in experimental animals (Bull & Koppfler, 1991).…”

Section: --Introductionmentioning

confidence: 99%

“…The addition of H 2 O 2 accelerates the decomposition of ozone due to the increased rate of hydroxyl radical generation (Brunet et al, 1984;Glaze et al, 1987, Kusic et al, 2008 Although ozone has become a popular and successful disinfectant for drinking water, it has not been widely used for wastewater disinfection due to the operation and maintenance problems associated with first generation systems, its high costs, and the high ozone demand of many effluents (Xu et al, 2002;Gehr et al, 2003).…”

Section: --Introductionmentioning

confidence: 99%

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Anaerobic effluent disinfected with ozone/hydrogen peroxide

Silva

Daniel²,

Contrera

et al. 2017

Cieng

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This research aimed at studying the oxidation process, to verify the effectiveness of coliform inactivation and to evaluate the formation of ozonation disinfection byproducts (DBP) in anoxic sanitary wastewater treated with ozone/hydrogen peroxide applied at doses of 2. RESUMOEsta pesquisa visou estudar o processo de oxidação, verificar a eficácia da inativação de coliformes e avaliar a formação de subprodutos da ozonização em efluente sanitário anóxico tratado com ozônio/peróxido de hidrogênio aplicado em doses de 2.6 mg O 3 L -1 e 2.0 mg H 2 O 2 L -1 com tempo de contato de 10 min e 8,1 mg O 3 L -1 e 8,0 mg H 2 O 2 L -1 com tempo de contato de 20 min. As reduções médias da demanda química de oxigênio (DQO) foram 7,50 e 9,40% para dosagens aplicadas de 2,5 -2,8 e 6,4 -9,4 mg O 3 L -1 + 2,0 e 8,0 mg.H 2 O 2 .L -1 , respectivamente. O intervalo de inativação de Escherichia coli (E. coli) foi 2,98 -4,04 log 10 e o intervalo de inativação de coliformes totais foi 2,77 -4,01 log 10 . Os aldeídos investigados foram o formaldeído, acetaldeído, glioxal e metilglioxal. Foi observada apenas a formação de acetaldeído que variou de 5,53 até 29,68 µg L -1 . Palavras-Chaves: Ozônio, peróxido de hidrogênio, desinfecção, subprodutos, esgoto sanitárior, efluente anaeróbio.

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Section: Total Coliform and E Colimentioning

confidence: 88%

Section: --Introductionmentioning

confidence: 99%

Section: --Introductionmentioning

confidence: 99%

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Anaerobic effluent disinfected with ozone/hydrogen peroxide

Silva

Daniel²,

Contrera

et al. 2017

Cieng

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“…The mechanism of the Fenton and photoFenton's reaction Scheme 1 was reported in the published literature (Arslan-Alaton et al 2009;Sohrabi et al 2014). Table 1 Kusic H. et al (2006) mentioned that the Fenton's techniques and a combination of UV and H 2 O 2 are the widely used methods compared to other chemical AOPs. Therefore, photoFenton in which ferric ion instead of ferrous ion was applied in this case.…”

Section: Samples and Chemicalsmentioning

confidence: 99%

Optimization of the Photochemical Degradation of Textile Dye Industrial Wastewaters

Dang

Mai

Truong³

et al. 2017

AJSTD

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In this study, the photochemical degradation via photo-Fenton process was carried out to degrade dyes in textile industrial wastewaters. Experimental design methodology was also applied for optimizing effects of factors which influence the effective treatment such as ferric dose, hydroperoxide dosage, initial pH, reaction time and initial chemical oxygen demand (COD). Two independent variables namely colour and COD removal efficiencies were used to evaluate the treatment yield. Under the optimal conditions, ca. 99% and ca. 88%, colour, and COD were removed, respectively.

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“…For a long time, some hope in wastewater and water treatment associated with the so-called Advanced Oxidation Processes -AOP, which include chemical, photochemical and photocatalytic processes [Legrini, Oliveros, and Braun 1993;Sobczyński and Dobosz 2001;Kusic, Koprivanac, and Bozic 2006]. Most of the AOP reactions are carried out at ambient temperature [Gogate and Pandit 2004].…”

Section: 7mentioning

confidence: 99%

Photocatalytic Processes in Environmental Protection Degradation of Anthocyanins E163 Ws on Illuminated TIO2

Zmudziński

Pawłowski

2017

SOEP

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Th e research results on the possibility of anthocyanins' traces degradationobtained from Vitis vinifera L. grapes peel (commercial colouring agent E163 WS) contained in water (sewage) are presented in this paper. Experiments were conducted in the model photocatalytic systems: UV/E163/H 2 O/TiO 2 and UV/E163/H 2 O. Th e level of the colour degradation was estimated on spectrophotometric measurements. Th e amount of mineralized colour in UV/E163/H 2 O/TiO 2 system was inversely proportional to the initial concentrations in the examined solution. Th e E163 colourant loss expressed as absorbance decrease of tested solutions, which was a result of photocatalytic degradation ranged from 40% to 88%, depending on the initial concentration of colourant in the solution. On the basis of the conducted kinetics analysis it was found that in the range of the studied concentration of E163 WS colourant the photocatalytic process reveals substantial deviations from the generally accepted Langmuir-Hinshelwood model. Th is is among others due to the so-called a homogeneous photodegradation of substrate (in UV/E163/H 2 O system) -45-68% in relation to the process occurring in the heterogeneous system, UV/E163/H 2 O/ TiO 2 . Th e examined conduction of variations in pH during illumination showed the formation of acid derivatives of anthocyanins photooxidation. Th e research results indicate that photocatalytic processes belonging to so-called advanced oxidation processes (AOP) may constitute an alternative to the traditional methods for sewage treatment of the food industry.Keywords: water quality, photocatalysis, photolysis, TiO2, anthocyanins, E163 WS.

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Minimization of organic pollutant content in aqueous solution by means of AOPs: UV- and ozone-based technologies

Cited by 172 publications

References 31 publications

Anaerobic effluent disinfected with ozone/hydrogen peroxide

Anaerobic effluent disinfected with ozone/hydrogen peroxide

Optimization of the Photochemical Degradation of Textile Dye Industrial Wastewaters

Photocatalytic Processes in Environmental Protection Degradation of Anthocyanins E163 Ws on Illuminated TIO2

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