Monitoring of ORP, pH and DO in heterogeneous Fenton oxidation using nZVI as a catalyst for the treatment of azo-dye textile wastewater

Yu, Ruey-Fang; Chen, Ho‐Wen; Cheng, W. T. K.; Lin, Y.C.; Huang, Chin-Lan

doi:10.1016/j.jtice.2013.09.006

Cited by 56 publications

(28 citation statements)

References 40 publications

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“…The dissolved oxygen in the tests reaches a similar maximum value because the solubility of O2 in the aqueous solution is the same, with a mean of 379 DO%. Similar observations were made by Lin et al (2012) and Yu et al (2014), who noticed a relationship between hydroxyl radical production and ORP, producing a high level of contamination removal.…”

Section: Discussionsupporting

confidence: 87%

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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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Section: Discussionsupporting

confidence: 87%

“…The percentage of DO and ORP increased greatly during the adsorption process and this behavior may be due to the turbulence generated in circulated water, principally in the moment when it is returned to the tank, increasing the concentration of DO in the system and consequently the increase in ORP (Pankaj et al, 2008;Yu et al, 2014).…”

Section: Discussionmentioning

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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“…And it was reported that NZVI is capable of discolorating and removing dyes by destroying their chromogenic group (i.e. N N ) [24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and reactivity of cellulose modified nano zero-valent iron for dye discoloration

Wang

et al. 2015

Applied Surface Science

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“…Wastewaters from dyeing and other textile processes, containing high levels of color, refractory organics, and solids, pose a significant threat to environment and public health owing to their potential to form toxic aromatic products with carcinogenic and mutagenic properties [3,4]. Methylene blue (MB) is the most commonly employed basic dye, which can cause increased heart rate, vomiting, shock, Heinz body formation, cyanosis, jaundice, quadriplegia, and tissue necrosis in humans [5].…”

Section: Introductionmentioning

confidence: 99%

Morphologically controlled synthesis of porous Mn₂O₃microspheres and their catalytic applications on the degradation of methylene blue

Tao

Shao

Song

et al. 2015

Desalination and Water Treatment

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A B S T R A C T Porous Mn 2 O 3 microspheres are controllably synthesized by selectively etching MnCO 3 precursor with HCl solution. Morphologies and microstructures of Mn 2 O 3 microspheres are analyzed by SEM, TEM, XRD, and N 2 sorption technique. The catalytic performances of Mn 2 O 3 microspheres for the degradation of methylene blue (MB) are investigated, and the reaction kinetics of MB degradation is also studied. The results show it is feasible to control the morphologies of Mn 2 O 3 microspheres by adjusting the concentration of HCl solution, and the well-developed porous Mn 2 O 3 microspheres demonstrate good potential on MB degradation. The degradation reactions follow the pseudo-first-order kinetic model, and the degradation capabilities for MB are great dependent on BET surface areas and pore volumes of Mn 2 O 3 microspheres.

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Monitoring of ORP, pH and DO in heterogeneous Fenton oxidation using nZVI as a catalyst for the treatment of azo-dye textile wastewater

Cited by 56 publications

References 40 publications

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

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

Synthesis, characterization, and reactivity of cellulose modified nano zero-valent iron for dye discoloration

Morphologically controlled synthesis of porous Mn₂O₃microspheres and their catalytic applications on the degradation of methylene blue

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Monitoring of ORP, pH and DO in heterogeneous Fenton oxidation using nZVI as a catalyst for the treatment of azo-dye textile wastewater

Cited by 56 publications

References 40 publications

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

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

Synthesis, characterization, and reactivity of cellulose modified nano zero-valent iron for dye discoloration

Morphologically controlled synthesis of porous Mn2O3microspheres and their catalytic applications on the degradation of methylene blue

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Product

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Morphologically controlled synthesis of porous Mn₂O₃microspheres and their catalytic applications on the degradation of methylene blue