Characterization of the COD/VSS Ratio during Anaerobic Digestion of Waste Activated Sludge: Experimental and Modeling Studies

$17.50 plus tax (Refund Policy)

Buy Article:

Abstract:

An experimental study that examined the elemental composition of waste activated sludge as it progressed through mesophilic and thermophilic anaerobic digestion was completed. It was found that the oxygen mass fraction of the VSS increased while the carbon content decreased as digestion progressed. Small differences were observed between the responses observed for mesophilic and thermophilic digestion with the former having a greater increase in oxygen content. With the exception of nitrogen, the average molecular composition of the VSS was found to be consistent with that previously reported for microbial cells. The COD/VSS ratio of the solids decreased as digestion progressed and varied from 1.6-1.2 g COD/g VSS. When employing fixed default values for the COD/VSS ratio, the BioWin model was able to adequately predict biogas production but the prediction of COD/VSS deviated from the observed values as digestion progressed.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864708788735592

Publication date: January 1, 2008

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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