Skip to main content

Ascaris suum Egg Inactivation and Destruction by the Vermicomposting Worm, Eisenia foetida.

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Vermicomposting is a novel means of reducing organic wastes using a living system composed of earthworms and biosolids. The end product is a highly processed material more favored by the general public. Vermicomposting must take place at temperatures below 35°C in order to maintain worm viability and be successful. This has the disadvantage that it does not reach the 55°C temperatures required by law for pathogen inactivation in composting systems. Pathogen reduction in the composting process is in a large part time and temperature dependent, so it is difficult to understand how vermicomposting can produce a pathogen free product. Although it seems likely that the earthworms may inactivate various bacterial and viral pathogens, there is some concern based on prior literature that they may not successfully inactivate the eggs of helminths that find their way into the biosolids of municipal treatment plants. Thus, this work looked at the ability of Eisenia foetida worms to kill Ascaris eggs in potting soil. Over a six-month period, there was no significant (α=0.05, p=0.563) decrease in the mean number of eggs recovered from soil containing worms sampled at 1, 5, 11, 13, 14, 18, 28, and 183 days after egg addition. In terms of viability, at 1 week after the eggs and worms were placed together, there was no significant reduction (α=0.05, p value=0.272) in the mean egg viability with or without worms being present (91.8% vs. 93%, respectively). After a period of 6 months in the presence of E. foetida earthworms, the mean viability of the eggs recovered was 77.2%. In this study, E. foetida earthworms did not achieve a one-log reduction in A. suum numbers or viability.
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: 2006-01-01

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 These proceedings are not peer reviewed.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