Removal of Remazol Blue by azoreductase from newly isolated bacteria

ERTUĞRUL KARATAY S., Kilic N., DÖNMEZ G.

ECOLOGICAL ENGINEERING, cilt.84, ss.301-304, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 84
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.ecoleng.2015.09.037
  • Dergi Adı: ECOLOGICAL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.301-304
  • Anahtar Kelimeler: Textile dye, Bacteria, Azoreductase activity, Wastewater treatment, AZO-DYES, TEXTILE DYES, WASTE-WATER, DECOLORIZATION, CONSORTIUM, PURIFICATION, PSEUDOMONAS
  • Ankara Üniversitesi Adresli: Evet

Özet

The removal of an azo dye, namely Remazol Blue, by wastewater-isolated bacteria (Bacillus megaterium, Micrococcus luteus and Bacillus pumilus) has been investigated in media containing molasses as a carbon and energy source. The dye removal properties of bacteria were studied in a batch system where the initial pH values (6, 7, 8, 9) and dye concentrations are the variables (28.7, 57.9, 78.3, 97.9 mg/L) throughout three days of incubation time. Optimal pH value was 7 for the tested bacteria in media containing 25 mg/L dye. All of the isolated bacteria had capacity for removing Remazol Blue in the range from 23.7% to 69.9%. Moreover, experiments reveal notable results even 97.9 mg/L dye concentrations in a short incubation time such as 3 days in the liquid media that contains only molasses as a carbon and energy source. The highest azoreductase activity was obtained as 39.9 U/mL for B. pumilus at 2nd day while M. luteus did not show any azoreductase activity. (C) 2015 Elsevier B.V. All rights reserved.