Sonoelectrochemical oxidation for decolorization of Reactive Red 195

Somayajula, Anusha; Asaithambi, Perumal; Susree, Modepalli; Matheswaran, Manickam

doi:10.1016/j.ultsonch.2011.12.019

Cited by 66 publications

(25 citation statements)

References 23 publications

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“…An interesting way to enhance mass transfer on the electrode surface is the simultaneous use of ultrasounds. In addition, the application of ultrasound via the acoustic cavitation can promote the generation of reactive oxygen species . Under this perspective Ren et al .…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Degradation of Piroxicam on a Boron‐Doped Diamond Anode: Investigation of Operating Parameters and Ultrasound Synergy

et al. 2018

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The electrochemical oxidation of piroxicam (PIR), a representative nonsteroidal anti-inflammatory drug, was studied using boron-doped diamond (BDD) as anode. BDD exhibited superior efficiency in comparison with platinum electrodes in terms of PIR degradation. Removal of PIR follows pseudo-first-order kinetics and the apparent kinetic constants decreased from 0.138 to 0.0369 min À 1 as the initial PIR concentration increased from 245 to 975 μg L À 1 . Altering of the pH had little effect on electrolysis of PIR with slightly better removal at pH 9. The presence of 10 g L À 1 of tert-butanol inhibited PIR removal, indicating that its oxidation is caused by electro-generated hydroxyl radicals. Addition of 200 mg L À 1 sodium chloride increased the apparent kinetic constant more than ten times from 0.139 to 1.44 min À 1 . Similar behavior was observed in the case of bicarbonates and nitrates, possibly due to the generation of selective carbonate radicals and active oxygen species like nitric or nitrous oxides. Experiments were also conducted in various aqueous matrices and it was observed that the presence of humic acid delayed the degradation of PIR, while process efficiency was enhanced in bottled and surface water as well as in wastewater, due to the presence of inorganic ions. Coupling BDD electrolysis with ultrasound (at 14 W L À 1 , 20 kHz) increased the reaction rate of PIR destruction and the observed synergy was calculated at S = 44.6 %. order to keep temperature of the water below 35°C after 15 min of sonoelectrocatalysis. Liquid ChromatographyPIR was detected by modifying an HPLC method, described in our previous work. [48] The chromatographic system was a Waters Alliance 2695 connected with a Waters 2996 PDA detector. The column was a Kinetex XB-C18 100A column (2.6 μm, 2.1 mm × 150 mm and was connected with a 0.5 μm inline filter (KrudKatcher Ultra) (Phenomenex). The flow rate was 0.2 mL/min and the mobile phase consisted of 75 : 25 acetonitrile water. The column was thermostated to 45°C. The injection volume was 100 μL. After the separation, the concentration of PIR was measured using Waters 2996 Photo Diode Array detector at 350 nm.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Degradation of Piroxicam on a Boron‐Doped Diamond Anode: Investigation of Operating Parameters and Ultrasound Synergy

et al. 2018

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“…They reported that the combination of EF process with sonication process not only accelerated the oxidation rate of azure dye but also promoted the dye and chemical oxidation demand (COD) removal efficiency, significantly. In a similar study, Somayajula et al [17] studied the degradation of Reactive Red 195 (RR 195) by electrochemical and sono-electrochemical oxidation. It was determined that sono-electrochemical oxidation was more effective than electrochemical oxidation.…”

Section: Introductionmentioning

confidence: 99%

COD and color removal from synthetic textile wastewater by ultrasound assisted electro-Fenton oxidation process

Şahinkaya

2013

Journal of Industrial and Engineering Chemistry

116

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“…Reactive Red 195 (commercially named as Jakofix Red ME4BL) was kindly supplied from a local dyehouse located in Manisa. Its chemical formula is C31H19ClN7Na5O21S6 [33]. The test solutions were prepared by dissolving acquired amount of the Reactive Red 195 in deionized water.…”

Section: Methodsmentioning

confidence: 99%

“…The electrodes were connected to a DC power supply (SUNLINE SL-3010D) with galvanostatic operational options to control current density. Somayajula studied the effect of different supporting electrolytes on the electrochemical treatment of Reactive Red 195 dye and found that the best color removal could be achieved using NaCl agent [33]. Based on that result, the electrical conductivity of the dye solution was insufficient for electrocoagulation, and it was adjusted to an operational value with NaCl.…”

Section: Methodsmentioning

confidence: 99%

Effects of Operational Parameters on the Decolourisation of Reactive Red 195 Dye from Aqueous Solutions by Electrochemical Treatment

Gündüz¹,

Atabey²

2019

International Journal of Electrochemical Science

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One of the most polluting factors in the environment is the textile industries' wastewaters since they notably have complex ingredients and occurs in large volume. Moreover its effluents are in need of advanced treatment to be able to smoothly discharge to the receiving media. This study investigated the decolourisation efficiency of electrocoagulation process using three different electrodes, aluminum, zinc and iron, in Reactive Red 195 dye removal from model solutions. Effect of major operational parameters such as current density, pH, sacrificial electrode materials and operation time was followed for percentage decolourisation efficiency. The performance of the process was found to be maximum with iron electrode for Reactive Red 195 dye, but aluminum electrode was the best one for the real textile wastewater that is the mixture of textile dyes. Decolourisation efficiency reached to 98% employing current density of 40 mA cm-2 and iron electrode for the real effluent containing the dye, and COD was eliminated 74% employing aluminum electrode at the same current density. As a conclusion electrocoagulation was found to be efficient in treating and decolorizing the textile effluents and model solutions.

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Sonoelectrochemical oxidation for decolorization of Reactive Red 195

Cited by 66 publications

References 23 publications

Electrochemical Degradation of Piroxicam on a Boron‐Doped Diamond Anode: Investigation of Operating Parameters and Ultrasound Synergy

Electrochemical Degradation of Piroxicam on a Boron‐Doped Diamond Anode: Investigation of Operating Parameters and Ultrasound Synergy

COD and color removal from synthetic textile wastewater by ultrasound assisted electro-Fenton oxidation process

Effects of Operational Parameters on the Decolourisation of Reactive Red 195 Dye from Aqueous Solutions by Electrochemical Treatment

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