Skip to main content

Application of Membrane Aerated Membrane Coupled Bioreactor (M2BR) for the Simultaneous COD and Ammonia Removal in the Spaceship Wastewater Treatment

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

A novel membrane-aerated, membrane-coupled bioreactor (M2BR) was developed to treat wastewater collected during long-term space missions. The M2BR is particularly attractive for long-term space missions because it achieves aeration and biomass separation using approaches that are compatible with microgravity conditions. Bubbleless gas transfer is achieved in the M2BR using a hollow fiber membrane module with flat sheet configuration; this membrane also serves as a support media for biofilm growth. The counter-diffusion of oxygen and substrates into this biofilm promotes a unique bacterial stratification compared to conventional biofilms. Nitrifying bacteria and aerobic heterotrophs grow near the membrane surface (aerobic conditions), while denitrifying bacteria and other anaerobic heterotrophs form the outer layer of the biofilm (anoxic conditions). The M2BR is also coupled to a microfiltration membrane module that achieves complete biomass retention and produces a cell-free effluent.

Preliminary results have demonstrated that the M2BR can simultaneously achieve more than 90% COD and 85% total nitrogen removal when treating a synthetic space mission wastewater. Due to the low C:N ratio of the wastewater expected during space travel, however, additional electron donor is needed to achieve 100% denitrification. In conclusion, the M2BR provides considerable promise as a biotechnology for the treatment of wastewater during long-term space missions.
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: 2005-01-01

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 These proceedings are not peer reviewed.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