Decolorization of C. I. reactive orange 4 and textile effluents by electrochemical oxidation technique using silver-carbon composite electrode

Norazzizi Nordin, Siti Fathrita Mohd Amir, Muhammad Rahimi Usop, Mohamed Rozali Othman

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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, BOD5 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.

Original languageEnglish
Pages (from-to)642-651
Number of pages10
JournalActa Chimica Slovenica
Volume62
Issue number3
DOIs
Publication statusPublished - 2015

Fingerprint

Electrochemical oxidation
Silver
Effluents
Textiles
Carbon
Electrodes
Polyvinyl Chloride
Composite materials
Electrolysis
Molecules
Oxidants
Surface-Active Agents
Electrolytes
Cyclic voltammetry
Molecular weight
reactive orange
Color

Keywords

  • C. I. Reactive Orange 4
  • Composite electrode
  • Decolorization
  • Electrochemical oxidation
  • Textile effluents

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Decolorization of C. I. reactive orange 4 and textile effluents by electrochemical oxidation technique using silver-carbon composite electrode. / Nordin, Norazzizi; Amir, Siti Fathrita Mohd; Usop, Muhammad Rahimi; Othman, Mohamed Rozali.

In: Acta Chimica Slovenica, Vol. 62, No. 3, 2015, p. 642-651.

Research output: Contribution to journalArticle

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AU - Usop, Muhammad Rahimi

AU - Othman, Mohamed Rozali

PY - 2015

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N2 - 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, BOD5 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.

AB - 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, BOD5 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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