Solar photo-Fenton treatment of winery effluents in a pilot photocatalytic reactor

Velegraki, Theodora; Mantzavinos, Dionissios

doi:10.1016/j.cattod.2014.06.008

Cited by 28 publications

(17 citation statements)

References 37 publications

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“…However, solar photo-Fenton process proved to be highly efficient in the mineralization and detoxification of real winery wastewater. Velegraki and Mantzavinos [77] achieved 80% of DOC and TOC removals and concluded that increasing iron dosage enhanced the reaction rate due to higher hydroxyl radical production. Souza et al [65] reached a COD value lower than 150 mg O 2 /L, therefore in agreement with Portuguese legislation for discharge into water bodies (Decree-Law n • 236/98).…”

Section: Winery Wastewater Treatment By Aopsmentioning

confidence: 99%

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Application of Advanced Oxidation Processes for the Treatment of Recalcitrant Agro-Industrial Wastewater: A Review

Amor

Marchão

Lucas

et al. 2019

Water

178

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Agro-industrial wastewaters are characterized by the presence of multiple organic and inorganic contaminants of environmental concern. The high pollutant load, the large volumes produced, and the seasonal variability makes the treatment of these wastewaters an environmental challenge. A wide range of wastewater treatment processes are available, however the continuous search for cost-effective treatment methods is necessary to comply with the legal limits of release in sewer systems and/or in natural waters. This review presents a state-of-the-art of the application of advanced oxidation processes (AOPs) to some worldwide generated agro-industrial wastewaters, such as olive mill, winery and pulp mill wastewaters. Studies carried out just with AOPs or combined with physico-chemical or biological treatments were included in this review. The main remarks and factors affecting the treatment efficiency such as chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total organic carbon (TOC), and total polyphenols removal are discussed. From all the studies, the combination of processes led to better treatment efficiencies, regardless the wastewater type or its physico-chemical characteristics.

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Section: Winery Wastewater Treatment By Aopsmentioning

confidence: 99%

“…Application of the photo-Fenton process using sunlight as source of irradiation were also investigated to WWs treatment [65,77]. Due to the differences between effluents, which represent optimal [Fe]/[H 2 O 2 ] ratio to each one, studies cannot be compared.…”

Section: Winery Wastewater Treatment By Aopsmentioning

confidence: 99%

Application of Advanced Oxidation Processes for the Treatment of Recalcitrant Agro-Industrial Wastewater: A Review

Amor

Marchão

Lucas

et al. 2019

Water

178

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“…The factors evaluated were (i) the concentration of hydrogen peroxide (+1 = 1000 mg L −1 , −1 = 100 mg L −1 ), (ii) the concentration of Fe 2+ (+1 = 100 mg L −1 , −1 = 10 mg L −1 ), (iii) the pretreatment of JWW (+1 = pretreated, −1 = non‐pretreated) and (iv) the presence of solar UV (+1 = with UV (photo‐Fenton), −1 = without UV (Fenton)). These concentrations were chosen taking previous studies into consideration …”

Section: Methodsmentioning

confidence: 99%

“…These concentrations were chosen taking previous studies into consideration. [20][21][22] The pretreatment of the water consists of the use of resins that remove the sulfite from the JWW. This allows reducing the concentration of these compounds from 600 to 50 mg L −1 and also modifying the pH from 2.2 to 5.1.…”

Section: Experimental Designmentioning

confidence: 99%

Fenton and solar photo‐Fenton processes in the depuration of wastewater resulting from production of grape juice. A factorial design

Poblete

Cortés

Maldonado

2020

J of Chemical Tech & Biotech

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BACKGROUND Grapes used in the production of juice have high total phenolic content due to the undesirable fermentation process, consequence of the high content of sugar ant fatty acids in grapes, which produce a high amount of ethanol. Therefore, the amount of wastewater with a high concentration of organic matter is an environmental concern related to juice production. We evaluated the potential of the use of these Fenton and photo‐Fenton processes in the depuration of organic matter in the juice production wastewater and determined the factors that affect the treatment. RESULTS We obtained different levels of organic matter removal, with a higher level for the experimental conditions, that is, a high concentration of H2O2 and Fe+2 and the use of UV irradiation (photo‐Fenton). In this case, COD and polyphenol elimination was 70.2 % and 36.1%, respectively, with juice wastewater under no pretreatment and applying UV irradiation. The most important factor in the removal of COD in juice wastewater was the concentration of Fe+2, followed by H2O2 and the presence of solar UV. The most important factor in the removal of polyphenols is the pretreatment of the juice wastewater, with better results whenthere is no pretreatment. The highest removal of polyphenols was obtained using the water without being pretreated. CONCLUSIONS The specific energy consumption and the electrical energy per order under the photo‐Fentonprocess was lower than under the Fenton process, indicating a more efficient energy use. This is because the natural UV irradiation enhances the chemical reaction of the oxidation process, producing a higher difference in the concentration of COD and polyphenols in comparison to the process carried out without UV solar irradiation. © 2019 Society of Chemical Industry

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“…Advanced Oxidation Processes (AOPs) are physicochemical techniques (De la Cruz et al, 2013Rubio-Clemente et al, 2014), which have been applied to treat organic pollutants in both drinking water and wastewater (De la Cruz et al, 2013;Giraldo et al, 2010;Guzman-Duque et al, 2011;Velegraki and Mantzavinos, 2015). AOPs are characterized by the formation of oxidative species, mainly the hydroxyl radical ( OH), which degrades organic compounds with high reaction rates (Glaze et al, 1987).…”

Section: Introductionmentioning

confidence: 99%

Selecting the best AOP for isoxazolyl penicillins degradation as a function of water characteristics: Effects of pH, chemical nature of additives and pollutant concentration

Villegas-Guzmán

Silva-Agredo

Flórez

et al. 2017

Journal of Environmental Management

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a b s t r a c tTo provide new insights toward the selection of the most suitable AOP for isoxazolyl penicillins elimination, the degradation of dicloxacillin, a isoxazolyl penicillin model, was studied using different advanced oxidation processes (AOPs): ultrasound (US), photo-Fenton (UV/H 2 O 2 /Fe 2þ ) and TiO 2 photocatalysis (UV/TiO 2 ). Although all processes achieved total removal of the antibiotic and antimicrobial activity, and increased the biodegradability level of the solutions, significant differences concerning the mineralization extend, the pH of the solution, the pollutant concentration and the chemical nature of additives were found. UV/TiO 2 reached almost complete mineralization; while~10% mineralization was obtained for UV/H 2 O 2 /Fe 2þ and practically zero for US. Effect of initial pH, mineral natural water and the presence of organic (glucose, 2-propanol and oxalic acid) were then investigated. UV/H 2 O 2 /Fe 2þ and US processes were improved in acidic media, while natural pH favored UV/TiO 2 system. According to both the nature of the added organic compound and the process, inhibition, no effect or enhancement of the degradation rate was observed. The degradation in natural mineral water showed contrasting results according to the antibiotic concentration: US process was enhanced at low concentration of dicloxacillin followed by detrimental effects at high substrate concentrations. A contrary effect was observed during photo-Fenton, while UV/TiO 2 was inhibited in all of cases. Finally, a schema illustrating the enhancement or inhibiting effects of water matrix is proposed as a tool for selecting the best process for isoxazolyl penicillins degradation.

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Solar photo-Fenton treatment of winery effluents in a pilot photocatalytic reactor

Cited by 28 publications

References 37 publications

Application of Advanced Oxidation Processes for the Treatment of Recalcitrant Agro-Industrial Wastewater: A Review

Application of Advanced Oxidation Processes for the Treatment of Recalcitrant Agro-Industrial Wastewater: A Review

Fenton and solar photo‐Fenton processes in the depuration of wastewater resulting from production of grape juice. A factorial design

Selecting the best AOP for isoxazolyl penicillins degradation as a function of water characteristics: Effects of pH, chemical nature of additives and pollutant concentration

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