IMPACT OF SYNTHETIC ESTROGEN 17 ALPHA-ETHINYLESTRADIOL ON CARBON REMOVAL KINETICS


Çokgör E. , Alanyali B., Topuz E. , Zengin Balcı G. E. , Okutman Taş D. , İskender F. G.

FRESENIUS ENVIRONMENTAL BULLETIN, vol.26, no.1, pp.453-457, 2017 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 1
  • Publication Date: 2017
  • Title of Journal : FRESENIUS ENVIRONMENTAL BULLETIN
  • Page Numbers: pp.453-457

Abstract

This study investigated the impact of 17 alpha-ethinylestradiol, a significant compound among endocrine disrupter on the biodegradation of a synthetic organic substrate-a peptone/meat extract mixture-under aerobic conditions. A laboratory scale sequencing batch reactor was sustained at steady state at a sludge age of ten days with substrate feeding. The reactors were started with the amendment of peptone mixture (600 mgCOD/L) and 17 alpha-ethinylestradiol (EE2) with a concentration of 1 mg/L. Experimental profiles of oxygen uptake rates and polyhydroxyalkanoates (PHAs) were evaluated by calibration of a selected model. 1 mg/L of 17 alpha-ethinylestradiol had no acute effect on process kinetics. However, at the fortieth day of acclimation period to EE2, model simulation results showed that the maximum heterotrophic growth rate and the maximum hydrolysis rate for slowly hydrolysable products increased due to the stimulated enzyme activity.