Enhancement of the biodegradability of a mixture of dyes (methylene blue and basic yellow 28) using the electrochemical process on a glassy carbon electrode

AbstractThe coupling of an electrochemical process with a biological treatment for the degradation of methylene blue (MB) and basic yellow 28 (BY28) considered separately or in mixture on a glassy carbon electrode was examined in this study. It was shown that color removal efficiency and mineralization yield of MB, BY28, and their mixture increased with the working potential and decreased with the initial dye concentration. The optimal conditions were found to be E = 2.4 V/SCE, [MB]0 = 50 mg L−1, [BY28]0 = 50 mg L−1, pH = 2, T = 25°C, and ω = 600 rpm, which led to 100% color removal after 120 and 240 min of reaction time for BY28 and MB, respectively. Under these optimal conditions, the mineralization yield of BY28, MB, and their mixture (50 mg L−1 of each dye) was close to 59, 57, and 54% within 360 min of reaction time, respectively. The biological oxygen demand (BOD5)/chemical oxygen demand (COD) ratio increased substantially after 360 min of pre-treatment from 0.04 to 0.27 for the dyes mixture. Microb...

• Publication year

  2016

• Venue

  Desalination and Water Treatment

• Publication date

  2016-06-02

• Fields of study

  Chemistry, Environmental Science

• Identifiers
  DOI 10.1080/19443994.2015.1046944
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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