Modelisation Of Micropollutant Removal In Drinking Water Treatment By Ozonation Or Advanced Oxidation Processes (O3/H2O2)

Laplanche, A.; Velásquez, M.T. Orta de; Boisdon, V.; Martin, N.; Martin, G.

doi:10.1080/01919519508547579

Cited by 17 publications

(9 citation statements)

References 10 publications

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“…Addition of a small quantity of H 2 O 2 (0.0001 mol/L) reduced DBS disappearance rate, compared to the disappearance rate measured for DBS oxidation with ozone alone, for all applied pH values. Those observations are consistent with results of previously published studies on effect of H 2 O 2 /O 3 molar rate on efficiency of oxidation processes [32][33][34].…”

Section: Resultssupporting

confidence: 94%

Rate of dibutylsulfide decomposition by ozonation and the O3/H2O2 advanced oxidation process

Popiel

Nalepa

Dzierżak

et al. 2009

Journal of Hazardous Materials

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Section: Resultssupporting

confidence: 94%

Rate of dibutylsulfide decomposition by ozonation and the O3/H2O2 advanced oxidation process

Popiel

Nalepa

Dzierżak

et al. 2009

Journal of Hazardous Materials

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“…This is the same as the typical ozone decomposition trend in natural water (Park et al, 2001). Raw water quality can influence ozonation reactions with the main parameters considered to be natural organic materials (NOM) (Laplanche et al, 1995). One-hundred percent of Mesocyclops leukarti could be inactivated by 2.82 mg/L contact for 30 min.…”

Section: Removal Effect Of Five Oxidants On Mesocyclops Leukartimentioning

confidence: 63%

Study of removal effect on Mesocyclops leukarti with oxidants

Zuo

Cui

Lin

2006

J. Zhejiang Univ. - Sci. B

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Cyclops of zooplankton propagates prolifically in eutrophic waterbody and it cannot be exterminated by conventional disinfection process. The mutagenicity of Mesocyclops leukarti and its extermination with oxidants in a drinking waterworks in China were studied. Among five oxidants for use in bench-scale, chlorine dioxide is the most effective and the potassium permanganate is the weakest against Mesocyclops leukarti under the same conditions. Full-scale results showed that Mesocyclops leukarti could be effectively removed from water by 1.0 mg/L chlorine dioxide preoxidation combined with conventional removal physical process. After filtration, chlorite, a by-product of prechlorine dioxide, is stable at 0.45 mg/L, which is lower than the critical value of the USEPA. GC-MS examination and Ames test further showed that the quantity of organic substance and the mutagenicity in water treated by chlorine dioxide preoxidation are obviously less than those of prechlorination.

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“…The model was validated a posteriori, given that 70% of the experiments could be predicted satisfactorily by extrapolation (80%, when using all the experiments for calibration). Most authors who have modeled the kinetics of ozone with NOM focused on other aspects of the ozonation process: bromate formation ( [39]; [11]), impact of inorganic carbon [17], fate of micropollutants ( [40]; [41]), pathogen inactivation [11]. Consequently, little amounts of data can be found in these studies on the kinetics of ozone with NOM.…”

Section: Reducing the Data Needed For Calibration: Validation Of The mentioning

confidence: 99%

Large-Scale Experimental Validation of a Model for the Kinetics of Ozone and Hydroxyl Radicals with Natural Organic Matter

Mandel

Roche

Wolbert

2014

Ozone: Science & Engineering

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Accepted: 15 Jul 2013International audienceA unified model for the kinetics of O3 and *OH with NOM was proposed, calibrated and validated based on large experimental data sets. Single-phase batch experiments were done on 11 water samples from seven resources. Seasonal variations were studied on three resources. Effects of reaction time with ozone, ozone dose, pH, temperature, radical scavenger adding, and NOM dilution were studied. The experiments represented more than 1200 and 900 concentration measurements, respectively, for ozone and pCBA (*OH tracer). Mechanistic models were used for ozone self-decomposition and carbonate species kinetics. Results showed that the proposed model is robust and can handle different water characteristics and different experimental conditions: 75% of the experiments were modeled satisfactorily (for ozone and pCBA). Next, the domain of validity was determined: 6 ≤ pH ≤ 8; 1 meq.L−1 ≤ alkalinity ≤ 6 meq.L−1; 0-0.5 mgC.L−1 ≤ TOC ≤ 3.1 mgC.L−1. Only water samples with high organic (TOC > 2.4 mg.L−1) and low inorganic contents (alkalinity < 0.3 meq.L−1) could not be modeled adequately. Seasonal comparisons showed that the quality of the predictions decreases only for pCBA when having calibrated the model at another season. The model gave good results when using only 6 single batch experiments for calibration

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Modelisation Of Micropollutant Removal In Drinking Water Treatment By Ozonation Or Advanced Oxidation Processes (O₃/H₂O₂)

Cited by 17 publications

References 10 publications

Rate of dibutylsulfide decomposition by ozonation and the O3/H2O2 advanced oxidation process

Rate of dibutylsulfide decomposition by ozonation and the O3/H2O2 advanced oxidation process

Study of removal effect on Mesocyclops leukarti with oxidants

Large-Scale Experimental Validation of a Model for the Kinetics of Ozone and Hydroxyl Radicals with Natural Organic Matter

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