Chronic impact of sulfamethoxazole: how does process kinetics relate to metabolic activity and composition of enriched nitrifying microbial culture?


Katipoglu-Yazan T., Ubay-Cokgor E. , Orhon D.

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, vol.93, no.6, pp.1722-1732, 2018 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 93 Issue: 6
  • Publication Date: 2018
  • Doi Number: 10.1002/jctb.5545
  • Title of Journal : JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
  • Page Numbers: pp.1722-1732
  • Keywords: nitrification, kinetics, modeling, pharmaceuticals, molecular biology, activated sludge, RESPIROMETRIC EVALUATION, ACETATE UTILIZATION, NITRIFICATION, DEGRADATION, BIODEGRADATION, TETRACYCLINE, ANTIBIOTICS, ENVIRONMENT, INHIBITION, BACTERIA

Abstract

BACKGROUND: This study investigated utilization kinetics of ammonia-nitrogen induced by chronic sulfamethoxazole (SMX) exposure on biomass with an enriched nitrifying community. A lab-scale activated sludge system was supplied with 100 mg COD L-1 of peptone mixture and 50 mg N L-1 of ammonia nitrogen at a SRT of 15 days. At steady-state, the reactor was operated with additional daily SMX dosing of 50 mg L-1 for 35 days. Profiles of oxygen uptake rates and nitrogen fractions obtained in respirometric/batch experiments were used for estimation of nitrification kinetics.