Degradation of linuron by ultrasound combined with photo-Fenton treatment

Katsumata, Hideyuki; Kobayashi, Takuya; Kaneco, Satoshi; Suzuki, Tohru; Ohta, Kouji

doi:10.1016/j.cej.2010.10.073

Cited by 59 publications

(13 citation statements)

References 37 publications

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“…The effectiveness of the process can be improved by artificial or solar irradiation in a photo-assisted Fenton reaction, or "photo-Fenton" (Katsumata et al, 2011;Mendez-Arriaga et al, 2009;Torres et al, 2008a). This enhancement results from H 2 O 2 photodecomposition as indicated above, as well as across the photolysis of Fe(III) hydroxide [Fe(OH) 2+ ] and complexes [Fe(III)-organic ligand] that produces additional OH and regenerates Fe(II).…”

Section: Ultrasound Action Enhancement In Fenton and Photo-fenton Promentioning

confidence: 99%

The use of power ultrasound for water treatment

Pétrier

2015

Power Ultrasonics

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Section: Ultrasound Action Enhancement In Fenton and Photo-fenton Promentioning

confidence: 99%

The use of power ultrasound for water treatment

Pétrier

2015

Power Ultrasonics

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“…Therefore, the removal of pesticides from water by suitable methods is an urgent necessity. There are many methods available for removal of pesticides from aqueous medium including chlorination [7], ultrasound combined with photo-Fenton treatment [8], photocatalytic degradation [9,10], advanced oxidation processes [11], aerobic degradation [12] electrodialysis membranes [13], ozonation [14], and adsorption [15]. Among these conventional methods for the removal of pesticides, adsorption technique is found to be the most economical, effective, highly flexible in design, and simple as well as offers scope for regeneration of adsorbent materials [3].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Adsorption Parameters for Removal of Carbaryl Insecticide Using Neem Bark Dust by Response Surface Methodology

Chattoraj

Mondal

Sadhukhan

et al. 2016

Water Conserv Sci Eng

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Adsorptive removal of carbaryl from aqueous solutions by neem bark dust (NBD) was investigated in a batch method under laboratory conditions. At first, the effects of particle size, stirring rate, and contact time on the adsorption process were studied. The optimum value of particle size, stirring rate, and contact time were 200 μm, 250 rpm, and 25 min, respectively. Subsequently, response surface methodology (RSM) was applied to investigate the effects of other operating parameters such as solution pH (2-10), adsorbent dose (0.01-1 g), and initial concentration (5-20 ppm). The optimization of the process parameters and calculation of the effects and interactions of process variables were done by using Box-Behnken design (BBD) which is a subset of RSM. The independent variables were precisely optimized by making use of an objective function called Bdesirability function.^Based on the adsorption capacity and economical use of adsorbent, the input parameters were optimized by setting two different sets of criteria (I and II). The desirability of two different sets were 1.00 and 0.822, respectively, which explains that the estimated function can well represent the experimental model. The optimized result revealed that the NBD can be an effective adsorbent for the removal of carbaryl from an aqueous system. The adsorption of carbaryl on NBD was best analyzed with the Langmuir isotherm and the pseudo-second order kinetic model. From the kinetic study, the maximum adsorption capacity was found to be 142.85 mg g −1 . Thermodynamic data confirmed the feasibility and spontaneous nature of the adsorption process.

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“…The photocatalyst Degussa P25 was found to be more efficient compared to other photocatalysts tested, and degradation was more efficient at neutral pH compared to low and high pH. The sonochemical photodegradation of linuron was studied byKatsumata et al (2011), who found that the optimal Fe 2+ concentration and pH were 1.210-4 mol/L and 3.0, respectively, and that an initial linuron concentration of 10 mg/L was completely degraded by the ultrasound/ Fe 2+ /UV system after 20 min under optimal conditions, whereas only 79.3% of linuron was decomposed using ultrasonic irradiation only.Kouame et al (2011) studied the deposition of TiO 2 photocatalysts on -SiC Foam using the sol-gel process and tested the prepared materials for catalytic activity. Degradation of organic compounds such as Diuron was observed to occur using the developed TiO 2 /-SiC material as a photocatalyst.…”

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confidence: 99%