Photo-Fenton process as an efficient alternative to the treatment of landfill leachates

Primo, Óscar; Rivero, Marı́a J.; Ortiz, Inmaculada

doi:10.1016/j.jhazmat.2007.09.053

Cited by 190 publications

(99 citation statements)

References 37 publications

(57 reference statements)

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“…According to previous studies, increasing the initial concentration of H 2 O 2 increases the rate of OH radical production. Previous studies also have found that increasing OH radical production is done due to certain concentrations of H 2 O 2 , and if H 2 O 2 is added to the process it causes limitation and removal of the procedure [50][51][52][53]. 43.4, 59.85, and 63.88%, respectively, which is consistent with our previous study [53][54][55].…”

Section: The Effect Of Hydrogen Peroxidesupporting

confidence: 91%

Comparison of Fenton and Photo-Fenton Processes for Removal of Linear Alkyle Benzene Sulfonate (Las) from Aqueous Solutions

Miranzadeh¹,

Zarjam²,

Dehghani³

et al. 2016

Pol. J. Environ. Stud.

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The aim of our study was to investigate the effectiveness of Fenton and photo-Fenton processes for removing anionic surfactants from aqueous solutions. The study was conducted using 200 mgL and 120 mgL -1 ferrous ion) were 69.38 and 86.66%, respectively, which is consistent with the significant increase in the rate of LAS removal efficiency with reaction time (P<0.05). In conclusion, anionic surfactants removal was significantly correlated with reaction time by both methods, but showed less dependence on H 2 O 2 and Fe 2+ concentrations.

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Section: The Effect Of Hydrogen Peroxidesupporting

confidence: 91%

Comparison of Fenton and Photo-Fenton Processes for Removal of Linear Alkyle Benzene Sulfonate (Las) from Aqueous Solutions

Miranzadeh¹,

Zarjam²,

Dehghani³

et al. 2016

Pol. J. Environ. Stud.

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“…• effect (Tuhkanen, 2004;Primo et al, 2008). Also, the excess of H2O2 could be dangerous for the organisms that are going to use the treated water.…”

Section: Methodsmentioning

confidence: 99%

“…The success of the basics AOP lies in their ability to produce hydroxyl radicals (HO • ), through the use of H2O2, Fe +2 , UV, O3, or O3/UV, and heterogeneous photocatalysis by TiO2 (Primo et al, 2008;Deng & Englehardt, 2007). The utilization of H2O2/Fe +2 /UV or H2O2/Fe +2 is considered highly important in homogeneous catalysis in AOPs that are used in wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Treatment of seawater for rotifer culture uses applying adsorption and advanced oxidation processes

Poblete-Chávez

Cortés-Pizarro

Rojas-Araya

2016

lajar

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ABSTRACT. The use of live feed is common in aquaculture processes due to its nutritional advantages, and rotifers comprise one of the most used feeds in finfish aquaculture. However, bacteria present in water used for rotifer culture are a significant source of infection and consequently diseases could cause mortality in fishes. Advanced oxidation process (AOPs) are methods that may be useful to eliminate bacterial infections present in aquaculture wastewater and may allow the reuse of this water. Therefore, the prospect of using different advanced oxidation processes to inactivate Vibrio spp. and total bacteria cultures (TCB) present in this kind of water was evaluated. In particular, UVc/O3/H2O2, UVc/H2O2 and O3/H2O2 and the adsorption process were applied to seawater coming from a fish farming tank. The results obtained were highly promising because it was possible to inactivate 100% of bacteria present in the seawater when UVc/ozone/hydrogen peroxide and UVc/hydrogen peroxide were applied, needing around 20 and 80 min for Vibrio spp. and total culturable bacteria inactivation, respectively. These results are justified due to the strong action between H2O2 in the presence of UVc, which may produce a large amount of hydroxyl radicals. Nevertheless, when ozone/hydrogen peroxide was applied, total inactivation of bacteria did not occur. Also, an interesting relationship between bacteria inactivation and oxide reduction potential of seawater was observed during the process. Rotifers put in water after the treatment did not suffer behavior changes (swimming) and no mortalities were observed. Keywords: rotifers, bacteria, UV irradiation, ozone, hydrogen peroxide, aquaculture.Tratamiento de agua de mar para el cultivo de rotíferos mediante procesos de adsorción y oxidación avanzados RESUMEN. El uso de organismos vivos como alimento es común en la acuicultura, debido a sus ventajas nutricionales. Los rotíferos constituyen uno de los alimentos principales en el cultivo de peces. Sin embargo, las bacterias presentes en aguas utilizadas en el cultivo de rotíferos son una fuente importante de infección y pueden causar enfermedades y mortalidad en peces. Los procesos de oxidación avanzados son métodos útiles para eliminar bacterias presentes en aguas residuales de la acuicultura, permitiendo su reutilización. Se evaluó la inactivación de Vibrio spp. y bacterias cultivables totales presentes en aguas residuales de la acuicultura a través procesos de oxidación avanzados. Particularmente, se estudió la aplicación de UVc/O3/H2O2, UVc/H2O2 y O3/H2O2 junto a procesos de adsorción aplicados a agua proveniente de un estanque de cultivo de peces. Los resultados obtenidos son muy prometedores debido a que fue posible inactivar el 100% de bacterias presentes cuando se utilizó UVc/O3/H2O2 y UVc/H2O2, requiriendo 20 y 80 min para la inactivación de Vibrio spp. y bacte- __________________ Corresponding editor: Ricardo Prego 780Latin American Journal of Aquatic Research rias cultivables totales, respectivamente. Estos resultados se expl...

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“…The hydroxyl radical is the second strongest oxidant with an oxidation potential at 2.80 V. It is effective at destroying organic pollutants rapidly with second-order rate constants, usually in the range of 10 9 -10 10 M -1 s -1 , and non-selectively with nearly all electron-rich organic compounds (26), such as hydrocarbons (23,27), organic dyes (28,29), antibiotics (30,31), pesticides (32,33), landfill leachates (34,35), explosives (36)(37)(38), phenols (39,40), and microbial contaminants (17,41). Meanwhile, nanocatalysis is one of many practical applications of nanotechnology.…”

Section: Nanocatalyst For Heterogeneous Advanced Oxidation Processes mentioning

confidence: 99%

Nanotechnology Solutions for Global Water Challenges

McGuinness

Garvey

Whelan

et al. 2015

ACS Symposium Series

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The lack of clean and safe drinking water is responsible for more deaths than war, terrorism and weapons of mass destruction combined. This suggests contaminated water poses a significant threat to human health and welfare. In addition, standard water disinfection approaches such as sedimentation, filtration, and chemical or biological degradation are not fully capable of destroying emerging contaminants (e.g. pesticides, pharmaceutical waste products) or certain types of bacteria (e.g. Cryptosporidium parvum). Nanomaterials and nanotechnology based devices can potentially be employed to solve the challenges posed by various contaminants and

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Photo-Fenton process as an efficient alternative to the treatment of landfill leachates

Cited by 190 publications

References 37 publications

Comparison of Fenton and Photo-Fenton Processes for Removal of Linear Alkyle Benzene Sulfonate (Las) from Aqueous Solutions

Comparison of Fenton and Photo-Fenton Processes for Removal of Linear Alkyle Benzene Sulfonate (Las) from Aqueous Solutions

Treatment of seawater for rotifer culture uses applying adsorption and advanced oxidation processes

Nanotechnology Solutions for Global Water Challenges

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