Electrochemical degradation of Reactive Blue 19 in chloride medium for the treatment of textile dyeing wastewater with identification of intermediate compounds

Rajkumar, D.; Song, Byungjoo; Kim, Jong Guk

doi:10.1016/j.dyepig.2005.07.015

Cited by 306 publications

(178 citation statements)

References 17 publications

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“…In the direct anodic oxidation process, the compounds are first adsorbed on the anode surface and then destroyed by the anodic electron transfer reaction. In the indirect oxidation process, strong oxidants such as hypochlorite/ chlorine, ozone, and hydrogen peroxide are electrochemically generated and react with the organic molecules in the bulk (Rajkumar and Kim, 2006;Rajkumar et al, 2007). Particularly, chloride has been considered for indirect oxidation since chloride salts are usually found in wastewaters (Oliveira et al, 2001, Palmas et al, 2007.…”

Section: Introductionmentioning

confidence: 99%

Phenol removal from wastewaters by electrochemical oxidation using boron doped diamond (BDD) and Ti/Ti0.7Ru0.3O2 dsa® electrodes

Britto-Costa

Ruotolo

2012

Braz. J. Chem. Eng.

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-Industrial wastewater containing non-biodegradable organic pollutants consists of highly toxic effluents whose treatment is necessary due to environmental and economical restrictions. In order to treat these effluents, an electrochemical process using a dimensionally stable anode (DSA ® ) and boron-doped diamond (BDD) electrode was studied. The performance of these electrodes for COD removal from aqueous phenol solution was evaluated in the absence and presence of different chloride concentrations. The results showed that DSA ® could be successfully used to remove COD when high chloride concentration (3035 mg L -1 Cl -) and mild current density are employed (50 mA cm -2 ). On the other hand, the presence of chloride did not have the same significant effect on the COD depletion rate using BDD; however, under mild conditions (50 mA cm -2 , 0.190 m s -1 ), the addition of 607 mg L -1 Cl -improved the COD removal by approximately 52% after 8 hours of electrolysis. The effect of current density (i) and flow velocity (v) were also studied, and it was verified that they have an important role on the process performance, especially when DSA ® is used.

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Section: Introductionmentioning

confidence: 99%

Phenol removal from wastewaters by electrochemical oxidation using boron doped diamond (BDD) and Ti/Ti0.7Ru0.3O2 dsa® electrodes

Britto-Costa

Ruotolo

2012

Braz. J. Chem. Eng.

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“…The presence of color in water poses a serious threat to the environment, affecting water recreational value, light penetration and thereby reducing photosynthesis and dissolved oxygen (Dafale et al 2010). A number of physicochemical methods are available for the treatment of textile dyeing effluents containing azo dyes (Rajkumar et al 2007;He et al 2008;Kusvran et al 2011;Ju et al 2009;Zhou et al 2013). However, these methods have their own limitations such as high cost, sludge generation and low efficiency (Patidar et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of azo dye Direct Orange 16 by Micrococcus luteus strain SSN2

Singh

Chatterji

Nandini

et al. 2014

Int. J. Environ. Sci. Technol.

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In the present study, the decolorization and degradation of azo dye Direct Orange 16 (DO-16) by a potential bacterial isolate isolated from textile effluent were evaluated. Through 16S rRNA sequence matching, the potential isolate was identified as Micrococcus luteus strain SSN2. The effects of various factors (pH, temperature, salt and dye concentration) on decolorization were investigated. The strain SSN2 had the ability to decolorize DO-16 with 96 % efficiency at pH 8, 37°C and 3 % NaCl in a short time of 6 h under static conditions. DO-16 decolorization was assessed by UV-Vis spectrophotometer with gradual decrease of dye peak intensity at 430 nm (k max ). Analytical techniques (thin-layer chromatography, Fourier transform infrared spectroscopy and high-performance liquid chromatography) further confirmed that biodegradation of DO-16 was due to reduction of the azo bond. The phytotoxicity assay (with respect to seeds of Vigna mungo and Vigna radiata) demonstrated the less toxic nature of the DO-16-degraded products compared to the toxic azo dye.

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“…The temperature program steps were as follows: 40 °C for 10 min, increase to 100 °C at 12 °C min -1 , increase to 200 °C at 5 °C min -1 , increase to 270 °C at 20 °C min -1 , 270 °C for 5 min, increase to 300 °C at 10 °C min -1 , and 300 °C for 5 min. 30 The dye Reactive Blue 4, dye content 35%, had low purity, so GC-MS was accomplished at a higher initial dye concentration (175 mg L -1 ); the samples were collected at different times (1-4 h). After electrolysis, the samples were submitted to liquid-liquid extraction in acid and alkaline conditions, separately, using dichloromethane (Merck, Germany).…”

Section: Analytical Controlmentioning

confidence: 99%

Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA^®-Type Electrode

Silva

Andrade

2015

Journal of the Brazilian Chemical Society

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We investigated the photoelectrochemical oxidation of the dye Reactive Blue 4 in the presence of a DSA ® -type electrode of nominal composition Ti/Ru 0.3 Ti 0.7 O 2 under ultraviolet radiation, aiming to enhance the degradation yields of this dye. We conducted the photoelectrocatalytic treatment under galvanostatic control, using an 80 W mercury vapor lamp as the UV source. We also compared unassisted electrooxidative processes and photocatalytic processes with photoelectrochemical oxidation, to gain better insight into the employed advanced oxidation processes and to evaluate their applicability. The photoelectrooxidative process conducted at 37.8 mA cm -2 promoted fast color removal in the tested solution. The chemical oxygen demand and total organic carbon decreased by approximately 64.7 and 42.7%, respectively. High performance liquid chromatography, gas chromatography coupled to mass spectrometry helped to identify the intermediate compounds produced along the photoelectrochemical process, namely phthalic anhydride, phthalimide, phthalide, 1,3-indanone, and benzoic acid.

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Electrochemical degradation of Reactive Blue 19 in chloride medium for the treatment of textile dyeing wastewater with identification of intermediate compounds

Cited by 306 publications

References 17 publications

Phenol removal from wastewaters by electrochemical oxidation using boron doped diamond (BDD) and Ti/Ti0.7Ru0.3O2 dsa® electrodes

Phenol removal from wastewaters by electrochemical oxidation using boron doped diamond (BDD) and Ti/Ti0.7Ru0.3O2 dsa® electrodes

Biodegradation of azo dye Direct Orange 16 by Micrococcus luteus strain SSN2

Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA^®-Type Electrode

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Electrochemical degradation of Reactive Blue 19 in chloride medium for the treatment of textile dyeing wastewater with identification of intermediate compounds

Cited by 306 publications

References 17 publications

Phenol removal from wastewaters by electrochemical oxidation using boron doped diamond (BDD) and Ti/Ti0.7Ru0.3O2 dsa® electrodes

Phenol removal from wastewaters by electrochemical oxidation using boron doped diamond (BDD) and Ti/Ti0.7Ru0.3O2 dsa® electrodes

Biodegradation of azo dye Direct Orange 16 by Micrococcus luteus strain SSN2

Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode

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Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA^®-Type Electrode