Disinfection of urban effluents using solar TiO2 photocatalysis: A study of significance of dissolved oxygen, temperature, type of microorganism and water matrix

García-Fernández, Irene; Fernández-Calderero, I.; Polo-López, M.I.; Fernández‐Ibáñez, Pilar

doi:10.1016/j.cattod.2014.03.026

Cited by 89 publications

(31 citation statements)

References 39 publications

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“…During storm events, wastewater treatment plants are susceptible to inflow of excess stormwater, often resulting in insufficient capacity to fully treat effluent to required standards. Untreated effluent discharged into freshwater systems contains organic material that is broken down by microorganisms, reducing the DO concentrations in water (Garcia-Fernandez et al, 2015). Evidence of this occurs here, where low DO combined with concomitantly elevated ammonium and turbidity concentrations, strongly suggesting that untreated effluent is being pushed through the SSTW, exhibiting a gradual recovery as fresh stormwater pulses re-oxygenate and dilute ammonium and turbidity concentrations ( Figure 4).…”

Section:  Event 2: 23 Rd December (00:00) To 24 Th December (9:00pm)mentioning

confidence: 82%

During a winter of storms in a small UK catchment, hydrology and water quality responses follow a clear rural-urban gradient

McGrane

Hutchins

Miller

et al. 2017

Journal of Hydrology

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Please cite this article as: McGrane, S.J., Hutchins, M.G., Miller, J.D., Bussi, G., Kjeldsen, T.R., Loewenthal, M., During a winter of storms in a small UK catchment, hydrology and water quality responses follow a clear ruralurban gradient, Journal of Hydrology (2016), doi: http://dx.doi.org/10. 1016/j.jhydrol.2016.12.037 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. from the data do not appear to be severe enough to cause ecological harm.

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Section:  Event 2: 23 Rd December (00:00) To 24 Th December (9:00pm)mentioning

confidence: 82%

During a winter of storms in a small UK catchment, hydrology and water quality responses follow a clear rural-urban gradient

McGrane

Hutchins

Miller

et al. 2017

Journal of Hydrology

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“…The use of CPC solar photoreactors was shown to be effective for TiO 2 solar photocatalytic degradation of several organic contaminants such as antibiotics [167], azo dyes [168], water disinfection [169,170], pesticides [8,171], humic acids [172], agro-food industry effluents [173], and ferricyanide [174]. 17 International Journal of Photoenergy Pereira and coworkers [167] studied the TiO 2 solar photocatalytic degradation of the antibiotic amoxicillin in aqueous solutions at neutral conditions (pH 7.5).…”

Section: Organic Matter Degradation By Tio 2 Solarmentioning

confidence: 99%

“…Water disinfection by TiO 2 solar photocatalysis in a solar reactor was also studied in simulated wastewater containing E. coli K-12 [169] and urban effluent contaminated with E. coli and F. solani spores [170]. Fernández et al [169] observed that bactericidal deactivation by sunlight in a CPC solar collector occurred with and without catalyst.…”

Section: Organic Matter Degradation By Tio 2 Solarmentioning

confidence: 99%

“…The slurry TiO 2 was more efficient for bacteria deactivation than the supported TiO 2 in the solar photocatalytic process. García-Fernández and collaborators [170] reported that the temperature and the dissolved oxygen, the most commonly used electron acceptor, were key factors for water disinfection. Thus, changes in temperature of photocatalytic reactors for water disinfection should be considered to evaluate the efficiency of the process.…”

Section: Organic Matter Degradation By Tio 2 Solarmentioning

confidence: 99%

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Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

Gutierrez-Mata

Velázquez-Martínez

Álvarez-Gallegos

et al. 2017

International Journal of Photoenergy

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This literature research, although not exhaustive, gives perspective to solar-driven photocatalysis, such as solar photo-Fenton and TiO 2 solar photocatalysis, reported in the literature for the degradation of aqueous organic pollutants. Parameters that influence the degradation and mineralization of organics like catalyst preparation, type and load of catalyst, catalyst phase, pH, applied potential, and type of organic pollutant are addressed. Such parameters may also affect the photoactivity of the catalysts used in the studied solar processes. Solar irradiation is a renewable, abundant, and pollution-free energy source for low-cost commercial applications. Therefore, these solar processes represent an environmentally friendly alternative mainly because the use of electricity can be decreased/avoided.

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“…Advanced Oxidation Processes (AOPs) are good alternatives to the traditional disinfection methods (García-Fernández et al, 2015;Agullo-Barcelo et al, 2013). These processes are based on the formation of hydroxyl radicals which are highly reactive and non-selective (García-Fernández et al, 2012;Rodríguez-Chueca et al, 2014, Polo-Lopez et al, 2012.…”

Section: Introductionmentioning

confidence: 99%

Comparison of solar/H2O2 and solar photo-fenton processes for the disinfection of domestic wastewaters

Şengül

Alkan

2016

KSCE J Civ Eng

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The aim of the present study was to evaluate and compare the effectiveness of two solar-based processes (solar/H 2 O 2 and solar photo-fenton) for the inactivation of E. coli in simulated domestic wastewater. Different H 2 O 2 concentrations were applied for solar/ H 2 O 2 process (5, 10, 50 and 150 mg/L) and for solar photo-fenton process (10, 30 and 50 mg/L) at different light intensities (200 W/m 2 and 500 W/m 2 ) in glass beakers under solar simulator. The application of light at 200 W/m 2 and 500 W/m 2 showed no difference on the removal time in the absence of hydrogen peroxide. However, in the presence of H 2 O 2 , removal times decreased significantly with the elevation of light intensity. When H 2 O 2 concentration was increased, the removal times decreased consistently for solar photofenton process and solar/H 2 O 2 process both at 200 W/m 2 and 500 W/m 2 , except for the process with solar/50 mg/L H 2 O 2 at 500 W/ m 2 . These results imply that solar/H 2 O 2 and solar photo-fenton processes may be a good alternative for disinfection of domestic wastewaters which contains high amounts of organic and inorganic materials.

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Disinfection of urban effluents using solar TiO2 photocatalysis: A study of significance of dissolved oxygen, temperature, type of microorganism and water matrix

Cited by 89 publications

References 39 publications

During a winter of storms in a small UK catchment, hydrology and water quality responses follow a clear rural-urban gradient

During a winter of storms in a small UK catchment, hydrology and water quality responses follow a clear rural-urban gradient

Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

Comparison of solar/H2O2 and solar photo-fenton processes for the disinfection of domestic wastewaters

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