Evaluation of electrochemical oxidation techniques for degradation of dye effluents—A comparative approach

Raghu, S.; Lee, Chang Woo; Chellammal, S.; Palanichamy, S.; Basha, C. Ahmed

doi:10.1016/j.jhazmat.2009.06.063

Cited by 126 publications

(47 citation statements)

References 38 publications

(36 reference statements)

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“…The sewage flows through the space between the anodes and cathodes, under the anodes oxidation effect the organic matter is directly oxidized to CO 2 and H 2 O. Meanwhile, Sodium Hypochlorite which is a strong oxidant is produced by the electrochemical reactions (7) [10], (8) and (9). Sodium Hypochlorite can also oxidize the organic matters to lower the COD and BOD 5 .…”

Section: Analysis Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Combined Electrocoagulation, Electrolysis and Photocatalysis Technologies Applied to Ship Sewage Treatment

Yu¹,

Yu²,

Liu³

et al. 2016

IJESD

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Section: Analysis Methodsmentioning

confidence: 99%

“…According to S. Raghu [10], OH can also be generated during the reactions and oxidize the organic compounds to CO 2 and H 2 O. Fig.…”

Section: Analysis Methodsmentioning

confidence: 99%

Combined Electrocoagulation, Electrolysis and Photocatalysis Technologies Applied to Ship Sewage Treatment

Yu¹,

Yu²,

Liu³

et al. 2016

IJESD

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“…Studies on untreated and treated textile effluents using various effluent parameters have been reported by many authors [31][32][33] The characterization results for the textile effluents before and after treatment were summarized in Table 6. In addition to the color removal shown in Figure 11, the electrochemical method using the Ag 28.5 C 66.5 -PVC 5 electrode could also significantly reduce the COD, BOD 5 , and surfactant content ( Table 6).…”

Section: Characterization Of Treated Textile Effluentsmentioning

confidence: 99%

Decolorization of C.I. Reactive Orange 4 and Textile Effluents by Electrochemical Oxidation Technique using Silver-Carbon Composite Electrode

Nordin

Amir

Yusop³

et al. 2015

ACSi

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In this study, the electrochemical oxidation of C. I. Reactive Orange 4 (RO4) on a silver-carbon composite (AgC-PVC) electrode was studied using the cyclic voltammetry, potential liner V, and electrolysis methods. The AgC-PVC electrode was used as the working electrode in the electrochemical measurement of RO4 in the presence of NaCl as a supporting electrolyte. The UV-Vis spectra of RO4 after the electrochemical oxidation showed the complete decolorization of the solution. The electrolysis products were characterized using FTIR and GC-MS. The results showed that in the presence of OCl -as an active oxidant, RO4 molecules are broken down into several lower-molecular-weight molecules by the electrochemical technique. The electrode used was also able to reduce the COD, BOD 5 and surfactant contents in the textile effluents using a pilot scale reactor. This proved that the prepared AgC-PVC electrode was beneficial for removing both the color and other pollutants from textile effluents.

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“…Propriedades tais como: ampla janela de potencial, baixa corrente de fundo e estabilidade física e química (1) . Devido a essas propriedades os filmes DDB têm sido estudados e aplicados como eletrodo na eletroquímica para o tratamento de água contaminada, como sensor em aná-lises eletroquímicas, eletrólise de compostos orgâni-cos e inorgânicos (2)(3)(4) . Os filmes de DDB podem ter as suas propriedades aperfeiçoadas através da modificação superficial com deposição de partículas metálicas, pois é um processo que leva ao aumento da rugosidade superficial, proporcionando, desta forma, um aumento da área condutiva do eletrodo e, consequentemente, um aumento da sensibilidade.…”

Section: Introductionunclassified

Estudo da fotoeletrodeposição de partículas de cobre sobre filmes de diamante dopado com boro

Ribeiro¹,

Couto²,

Migliorini³

et al. 2014

RBAV

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ResumoA fotoeletrodeposição de partículas de cobre sobre filmes de diamante dopado com boro (DDB) com diferentes níveis de dopagem foi investigada. Ênfases foram dadas no estudo da influência do nível de dopagem dos filmes e na eletrodeposição fotoassistida de cobre utilizando soluções com diferentes pHs (ácido e neutro). Os filmes crescidos foram caracterizados por espectroscopia Raman e a concentração de portadores foi estimada por medidas de Mott-Schottky Plot. Os resultados mostraram que a deposição de partículas de Cu sobre os filmes de DDB apresentou maior homogeneidade nos filmes com maior dopagem (B/C = 30000 ppm) quando comparados aos filmes de menor dopagem (B/C = 5000 ppm). Essa diferença na homogeneidade pode ser atribuída à melhor condutividade do eletrodo mais dopado devido à maior quantidade de boro presente neste filme, potencializando o processo de redução do cobre. Com relação ao meio eletrolítico (ácido, neutro) utilizado nas deposições fotoassistidas, foi observado, em meio neutro, uma melhor eficiência na deposição de Cu. Abstract Copper photoelectrodeposition on boron-doped diamond (BDD) films with different doping levels was investigated. Emphases were given to study the influence of the doping level of the films and of the Cu photoassisted electrodeposition processes using solutions with different pHs (acid and neutral). The films were characterized by Raman spectroscopy and the acceptor densities were estimated by Mott-Schottky Plot. The results showed that the Cu deposits presented more homogeneity for highly doped BDD electrode (B/C = 30000 ppm) when compared to the slightly doped BDD electrode (B/C = 5000 ppm). This difference in the uniformity

show abstract

Evaluation of electrochemical oxidation techniques for degradation of dye effluents—A comparative approach

Cited by 126 publications

References 38 publications

Combined Electrocoagulation, Electrolysis and Photocatalysis Technologies Applied to Ship Sewage Treatment

Combined Electrocoagulation, Electrolysis and Photocatalysis Technologies Applied to Ship Sewage Treatment

Decolorization of C.I. Reactive Orange 4 and Textile Effluents by Electrochemical Oxidation Technique using Silver-Carbon Composite Electrode

Estudo da fotoeletrodeposição de partículas de cobre sobre filmes de diamante dopado com boro

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