The addition of hydrogen peroxide in the electrocoagulation treatment for improving toxic organic matters removal: A comparative study

ABSTRACT

The role of hydrogen peroxide (H₂O₂) in the electrocoagulation (EC) treatment for removing toxic organic matters in wet-spun acrylic fibers (WAFs) manufacturing effluents was investigated. The addition of H₂O₂ in the EC resulted in electro-Fenton (EF) treatment, which improved the removal of organic pollutants. Biodegradability of the EF-treated effluents was significantly improved over the EF treatment and reached 0.18. In addition, evaluation of the toxicity of the treated effluents using luminous bacteria revealed that the EF treatment resulted in the greater removal of toxic compounds than the EC treatment, with 80.9% decline in the EC₅₀.

KEYWORDS:

• Biodegradability
• biotoxicity
• electro-Fenton
• luminous bacteria

Funding

The authors greatly appreciate the financial support of the Special Funds for Technological Development of Research Institutes from the Ministry of Science and Technology of China (2013EG111129), the Program for Overseas Talent of the Beijing Academy of Science and Technology (OTP-2013-015), the Program for Youth Scientists of the Beijing Academy of Science and Technology (201505), and the Program for Innovative Research Team of the Beijing Academy of Science and Technology (IG201204N).

Additional information

Funding

The authors greatly appreciate the financial support of the Special Funds for Technological Development of Research Institutes from the Ministry of Science and Technology of China (2013EG111129), the Program for Overseas Talent of the Beijing Academy of Science and Technology (OTP-2013-015), the Program for Youth Scientists of the Beijing Academy of Science and Technology (201505), and the Program for Innovative Research Team of the Beijing Academy of Science and Technology (IG201204N).