Pre-ozonation of aqueous azo dye (Acid Red-151) followed by activated sludge process

Gokcen F., Ozbelge T. A.

CHEMICAL ENGINEERING JOURNAL, cilt.123, sa.3, ss.109-115, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 123 Konu: 3
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.cej.2006.07.005
  • Sayfa Sayıları: ss.109-115


In this study, the efficiency of the integrated process was investigated in which the pre-ozonation step was followed by activated sludge process (ASP) in treating the aqueous Acid Red-151 (AR 151) solutions. The percent dye removal in the integrated process was found to be 47% for a pre-ozonation time of 30 min, instead of 25% in the singly ASP without pre-ozonation. The treatment efficiency of this process could be higher if the pre-ozonation time of 120 min yielding maximum enhancement of biodegradability at a peak value of BOD5/COD ratio were used before the biological treatment process. (c) 2006 Elsevier B.V. All rights reserved.