A kinetic model for H2O2/UV process in a completely mixed batch reactor

Crittenden, John C.; Hu, Shumin; Hand, David W.; Green, Sarah

doi:10.1016/s0043-1354(98)00448-5

Cited by 463 publications

(284 citation statements)

References 30 publications

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“…(Penru et al, 2012;Crittenden et al, 1999). Probably, the sum of the effects from UV radiation and OH radicals (highly reactive) is the major route of inactivation of E. coli in this system.…”

Section: E Coli Inactivation In Milli-q Watermentioning

confidence: 99%

Comparative effect of simulated solar light, UV, UV/H2O2 and photo-Fenton treatment (UV–Vis/H2O2/Fe2+,3+) in the Escherichia coli inactivation in artificial seawater

et al. 2013

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Fe 2þ and 10 mg L À1 of H 2 O 2 , led to the fastest bacterial inactivation kinetics. Using H 2 O 2 / UV 254 high disinfection rates were obtained similar to those obtained with photo-Fenton under UV 254 light. In Milli-Q water, the rate of inactivation for Escherichia coli was higher than in Leman Lake water and seawater due to the lack of inorganic ions affecting negatively bacteria inactivation. The presence of bicarbonate showed scavenging of the OH radicals generated in the treatment of photo-Fenton and H 2 O 2 /UV 254 . Despite the negative effect of inorganic ions, especially HCO 3 -, the disinfection treatments with AOPs in lake water and seawater improved significantly the disinfection compared to light alone (simulated sunlight and UV 254 ). In the treatment of photo-Fenton with simulated sunlight, dissolved organic matter had a beneficial effect by increasing the rate of inactivation. This is associated with the formation of Fe 3þ -organo photosensitive complexes leading to the formation of ROS able to inactivate bacteria. This effect was not observed in the photo-

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Section: E Coli Inactivation In Milli-q Watermentioning

confidence: 99%

Comparative effect of simulated solar light, UV, UV/H2O2 and photo-Fenton treatment (UV–Vis/H2O2/Fe2+,3+) in the Escherichia coli inactivation in artificial seawater

et al. 2013

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“…Effect of temperature on H 2 O 2 conversion. As stated in the previous literatures, hydroxyl radical is the product of hydrogen peroxide UV radiation [11][12][13][14]. The conversion of hydrogen peroxide to hydroxyl radical can be worked out both from the increase of hydroxyl radical concentration and the decrease of hydrogen peroxide concentration in the liquid.…”

Section: Resultsmentioning

confidence: 97%

“…In advance oxidation process of H 2 O 2 /UV, it is critical to know the hydrogen peroxide concentration since hydroxyl radical ( * OH) is the hydrogen peroxide transformation product from direct photolysis of H 2 O 2 under UV radiation as the catalyst. The decomposition of hydrogen peroxide is presented in Equation (1) [14]:…”

Section: Resultsmentioning

confidence: 99%

Oxidation Process of H 2 O /UV for COD Reduction of Wastewater from Soybean Tofu Production

Pontas

Muslim

2015

MST

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Chemical Oxygen Demand (COD) reduction of wastewater from soybean tofu production was studied by conducting advanced oxidation process (AOP) using hydrogen peroxide with UV radiation catalysts in a closed cylindrical glass reactor. The hydroxyl radical (*OH) concentration from H 2 O 2 decomposition was modeled, and exponential trends were found for the *OH concentration over radiation time and operation temperature. As a result, it was found that the maximal *OH concentration was 0.209 mol L -1 at 240 minutes and 50 °C. The *OH concentration exponentially increased following rise in operation temperature. The H 2 O 2 /UV AOP application reduced COD concentration to approximately 42.41% from 10,545 to 6,073.2 mol L -1 at 240 minutes and 50 °C. In addition, the pseudo second order kinetics is a reliable model to present the COD reduction kinetics with the correlation coefficient R 2 in the range of 95.9 to 99.4%. The kinetics constant increased with rise in operation temperature, and it was approximately 2.30E-07, 2.590E-07, and 3.03E-07 L mg -1 min -1 for 30, 40, and 50 °C, respectively. The activation energy of COD reduction obtained was approximately 0.0138 J mol -1 . AbstrakProses Oksidasi H 2 O 2 /UV untuk Pengurangan COD Limbah Cair dari Produksi Tahu Kacang Kedele. Pengurangan Chemical Oxygen Demand (COD) pada limbah dari produksi tahu kacang kedele diteliti dengan melakukan percobaan Advanced Oxidation Process (AOP) menggunakan hidrogen peroksida dengan katalis radiasi UV di dalam sebuah reaktor silinder tertutup. Konsentrasi radikal hidroksida (*OH) dari dekomposisi H 2 O 2 dimodelkan, dan kecenderungan eksponensial didapat untuk konsentrasi *OH terhadap waktu radiasi dan suhu operasi. Konsentrasi *OH maksimum adalah 0,209 mol L -1 pada menit ke-240 dan temperatur 50 °C. Konsentrasi *OH meningkat secara eksponensial untuk temperatur operasi yang meningkat. Aplikasi AOP H 2 O 2 /UV telah mampu mengurangi kadar COD sebanyak 42,41% dari 10.545 sampai pada 6.073,2 mol L -1 pada waktu ke-240 menit dan suhu 50 °C. Sebagai tambahan, model kinetika orde dua semu sesuai untuk menggambarkan kinetika pengurangan COD dengan koefisien korelasi R 2 sebesar 95,9 sampai 99,4%. Konstanta kinetik meningkat dengan meningkatnya suhu, dan nilainya sebesar 2,30E-07, 2,590E-07, dan 3,03E-07 L mg -1 min -1 untuk suhu 30, 40, dan 50 °C secara berurutan. Energi aktivasi pengurangan COD didapat sebesar 0,0138 J mol -1 .

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“…The detailed UV-H 2 O 2 kinetic model has been extensively validated in several previous studies and particularly in Crittenden et al [2] for continuous flow stirred tank reactors and Li et al [13], who implemented the UV-H 2 O 2 reaction mechanism in the AdOx software. The kinetic model was incorporated into CFD using numerical subroutines to prescribe the net rate of generation for each chemical species considered.…”

Section: The Kinetic Model For Uv-h2o2 Advanced Oxidationmentioning

confidence: 99%

“…Stefan et al [1] conducted a study on the kinetics and reaction mechanism of acetone degradation by UV-H 2 between observed and predicted data.…”

Section: Introductionmentioning

confidence: 99%

Performance and Energy Consumption Analysis of UV-H2O2 Photoreactors Using Computational Fluid Dynamics

Moghaddami¹,

Raisee²

2012

IJESD

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A kinetic model for H2O2/UV process in a completely mixed batch reactor

Cited by 463 publications

References 30 publications

Comparative effect of simulated solar light, UV, UV/H2O2 and photo-Fenton treatment (UV–Vis/H2O2/Fe2+,3+) in the Escherichia coli inactivation in artificial seawater

Comparative effect of simulated solar light, UV, UV/H2O2 and photo-Fenton treatment (UV–Vis/H2O2/Fe2+,3+) in the Escherichia coli inactivation in artificial seawater

Oxidation Process of H 2 O /UV for COD Reduction of Wastewater from Soybean Tofu Production

Performance and Energy Consumption Analysis of UV-H2O2 Photoreactors Using Computational Fluid Dynamics

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