Skip to main content

INVESTIGATING THE ROLE OF OXIDATIVE STRESS MECHANISMS IN CHEMICALLY INHIBITIED NITRIFIERS

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Nitrification is one of the most susceptible processes in wastewater treatment to upset by shock loads of toxic chemicals. Previous experiments have shown that nitrification in activated sludge proved to be especially susceptible to oxidative chemical toxins. This work investigates the role of the glutathione gated potassium efflux oxidative stress response mechanism in nitrifying bacteria. Experiments were performed using a nitrifying enrichment culture and pure cultures of the ammonia oxidizing bacterium Nitrosomonas europaea and the nitrite oxidizing bacterium Nitrospira moscoviensis. For these experiments, soluble potassium levels were monitored to observe increases associated with the glutathione gated potassium efflux mechanism. Results using the enrichment culture were inconclusive, probably because of the mixed bacterial population present. Results using the pure cultures of nitrifying bacteria suggest that neither the Nitrosomonas europaea nor the Nitrospira moscoviensis efflux potassium in response to the oxidative chemical N-ethylmaleimide. Both appeared to release potassium in response to the ionophore nigericin. Coupled with known genomic information, the results of this study provide greater insight into why nitrification is one of the most susceptible processes in biological wastewater treatment.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 01 January 2004

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more