Wastewater disinfection by combination of ultrasound and ultraviolet irradiation

Naddeo, Vincenzo; Landi, Milena; Belgıorno, Vincenzo; Napoli, R. M. A.

doi:10.1016/j.jhazmat.2009.02.128

Cited by 76 publications

(34 citation statements)

References 40 publications

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“…Some of the AOPs have got drawbacks related to formation of by-products that could have harmful effects. In view of the increased demand for higher water quality standards without toxic by-product concerns, significant attention has been drawn to the use of ultrasound for treatment of pharmaceutical and personal care products in water and wastewater (Gogate and Pandit 2004;Naddeo et al 2009;Chiha et al 2011). This is because the generation of hydroxyl radicals through acoustic cavitations results in oxidative degradation of contaminants (Torres et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Sonochemical degradation of endocrine disrupting chemicals 17β-estradiol and 17α-ethinylestradiol in water and wastewater

Ifelebuegu

Onubogu

Joyce

et al. 2013

Int. J. Environ. Sci. Technol.

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The sonochemical degradation of 17b-estradiol (E2) and 17a-ethinylestradiol (EE2) in water and wastewater was investigated at ultrasonic frequency of 850 kHz. The effects of pH, initial concentrations, temperature, power and dissolved organic carbon were examined. The results obtained indicated that the rate of ultrasonic degradation of E2 and EE2 in water and wastewater is influenced by the pH, power, air sparging and the dissolved organic content of the aqueous solutions. Mass degradation rates of E2 and EE2 per kW ranged from 1.7 to 4.0 mg kW -1 at varying process parameters. The degradation process followed the pseudo-second-order kinetic model with rate constant of 1.71 9 10 -2 min -1 at 25°C. The value for activation energy (E a = 15.21 kJ mol -1 ) obtained from Arrhenius-type plot, indicated that the ultrasonic degradation of steroid hormones is thermodynamically feasible, and does not progress only on radical reactions but other intermediate reaction processes. In wastewater, the higher dissolved organic carbon significantly reduced the effectiveness of degradation of the E2 and EE2 showing that ultrasound treatment will be more effective as a tertiary treatment option in wastewater applications.

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Section: Introductionmentioning

confidence: 99%

Sonochemical degradation of endocrine disrupting chemicals 17β-estradiol and 17α-ethinylestradiol in water and wastewater

Ifelebuegu

Onubogu

Joyce

et al. 2013

Int. J. Environ. Sci. Technol.

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“…Authors found that US allowed the halving of the reaction time necessary to obtain complete removal of Total coliforms by UV radiation alone. Naddeo et al (2009c) investigated the combined ultrasound and ultraviolet disinfection process in a pilot-scale configuration which is schematically shown in Figure 3. The reactor consists of a low frequency (39 kHz) ultrasonic transducer capable of operating at ultrasound power varying between 350 and 1400 W and two low pressure UV-C lamps of 150 W each.…”

Section: Ultrasound and Ultraviolet Disinfection Efficiencymentioning

confidence: 99%

“…The latter include (i) the degradation and removal of conventional and emerging contaminants in wastewaters , Hoffman et al, 1996Lifka et al, 2003;Gogate, 2008;Naddeo et al, 2009a;Naddeo et al, 2009b;Naddeo et al, 2010;Mendez-Arriaga et al, 2008;Secondes et al, 2014), (ii) drinking water and wastewater disinfection (Harvey and Loomis, 1929;Mason et al, 2003;Naddeo et al, 2009c;Arrojo et al, 2008), (iii) sludge (Tiehm et al, 1997;Chu and Lee, 2004;Wang et al, 2005;Bougrier et al, 2005;Climent et al, 2007;Naddeo et al, 2009d) and solid waste (Chen et al, 2008;Cesaro et al, 2012;Cesaro and Belgiorno, 2013;Cesaro et al, 2014) treatment prior to anaerobic digestion, (iv) landfill leachate pre-treatment (Lema et al, 1998;Gonze et al, 2003;Neczaj et al, 2007), (v) extraction of substances from contaminated sediments (Mecozzi et al, 2002;Collasiol et al, 2004;Moreda et al, 2004) and (vi) air purification (Grinthal and Ondrey, 1992;Serpone et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Water and wastewater disinfection by ultrasound irradiation - a critical review

Naddeo¹,

Cesaro²,

Mantzavinos³

et al. 2014

Global NEST Journal

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It is well known that chlorine and its compounds, traditionally utilized for water and wastewater disinfection, react with some organic matter to form undesirable by-products, hazardous to human health, known as Disinfection By-Products (DBPs). In many countries very stringent limits for chlorination by-products such as trihalomethanes were set for wastewater reuse. Accordingly, the use of different oxidation/disinfection systems should be evaluated as possible alternative to chlorine. Ultrasound (US) was recently found to be effective for this purpose.Aim of this work is to review main US disinfection studies, pointing out ultrasound mechanisms as well as its effects in terms of different bacteria inactivation (Total coliform, Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Saccharomyces cerevisiae, Klebsiella pneumonia) at both laboratory scale and pilot-scale. To this end, several experimental results were discussed and both focal interest points and encountered problems were summarized.Moreover the intensification of cavitation phenomena by combined oxidation processes was overviewed and main advantages and disadvantages were pointed out, in order to address future research and promote efficient large scale operations.

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“…(Adewuyi, 2005;Jones et al, 2005;Stackelberg et al, 2004;Ternes et al, 2002), advanced oxidation processes (AOPs), including ultrasound (US) treatment methodologies have received increasing attention during the last decade (Hartmann et al, 2008;Manariotis et al, 2011;Mendez-Arriaga et al, 2008;Naddeo et al, 2009aNaddeo et al, , 2009bNaddeo et al, 2010;Perez-Estrada et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Mediated effect of ultrasound treated Diclofenac on mussel hemocytes: First evidence for the involvement of respiratory burst enzymes in the induction of DCF-mediated unspecific mode of action

et al. 2016

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Wastewater disinfection by combination of ultrasound and ultraviolet irradiation

Cited by 76 publications

References 40 publications

Sonochemical degradation of endocrine disrupting chemicals 17β-estradiol and 17α-ethinylestradiol in water and wastewater

Sonochemical degradation of endocrine disrupting chemicals 17β-estradiol and 17α-ethinylestradiol in water and wastewater

Water and wastewater disinfection by ultrasound irradiation - a critical review

Mediated effect of ultrasound treated Diclofenac on mussel hemocytes: First evidence for the involvement of respiratory burst enzymes in the induction of DCF-mediated unspecific mode of action

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