alexa Decolorization of dye solution containing Acid Red 14 by electrocoagulation with a comparative investigation of different electrode connections.
Environmental Sciences

Environmental Sciences

International Journal of Waste Resources

Author(s): Daneshvar N, Sorkhabi HA, Kasiri MB

Abstract Share this page

Abstract This study was performed to investigate the variables that influence the efficiency of decolorization of a solution containing an azo dye (Acid Red 14) by electrocoagulation (EC) in order to compare the efficiency of different electrode connections for color removal. Current density, time of electrolysis, interelectrode distance, and pH of the solution were the variables that most influenced color removal. Initially, a simple electrochemical cell was prepared with an anode and a cathode. Then the effect of each variable was studied separately using synthetic wastewater in a batch mode. The efficiency of the method tested was determined by measurement of color removal and reduction of Chemical Oxygen Demand (COD). For dye solutions with COD of approximately 30 ppm and dye concentrations less than 150 ppm, high color removal (93\%) was obtained when the pH ranged from 6 to 9, time of electrolysis was approximately 4 min, current density was approximately 80 A/m2, the temperature was approximately 300 K, and interelectrode distance was 1 cm. During the EC process under these conditions, the COD decreased by more than 85\%. In the second series of experiment, the efficiency of EC cells with monopolar electrodes in series and parallel connections and an EC cell with bipolar electrodes were compared with results using a simple electrochemical cell. The experimental results showed that an EC cell with several electrodes was more effective than a simple electrochemical cell in color removal. The results also showed that an EC cell with monopolar electrodes had a higher color removal efficiency than an EC cell with bipolar electrodes. Furthermore, within an EC cell, the series connection of the monopolar electrodes was more effective for the treatment process than the parallel connection in color removal. This article was published in J Hazard Mater and referenced in International Journal of Waste Resources

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • 3rd International Conference and Expo on Oil and Gas
    July 13-14, 2017 Berlin, Germany
  • 2nd International Conference on Biochemistry
    September 28-29, 2017 Dubai, UAE
  • 3rd International Conference on Chemical Engineering
    October 2-4, 2017 Chicago, Illinois ,USA
  • 2nd Euro Global Summit and Expo on Biomass and Bioenergy
    October 12-13, 2017 London, UK
  • 2th International Conference on Environmental Toxicology and Ecological Risk Assessment
    October 19-20, 2017 Atlanta, Georgia, USA
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords