Anaerobic Digestion: Co-Digestion and Operational Issues

Animal Manure Management November 07, 2013 Print Friendly and PDF

Waste to Worth: Spreading science and solutions logoWaste to Worth home | More proceedings....

Abstract

A study was conducted to assess the performance of various mixing regimes on methanogen biomass content in anaerobic digesters.  Methane production in anaerobic digesters is directly related to the methanogens within the system.  Current systems involve mixing to increase biogas production and system efficiency, however little is known about the underlying mechanisms of this relationship.  In this study three pilot scale anaerobic digestion systems with three different mixing regimes were run with replication to examine the impacts to methanogen biomass content and biogas production.  The results will provide insight for operational recommendations as well as the basic microbial processes with digestion systems which are critical for optimization.

Authors

Rebecca Larson, University of Wisconsin-Madison            ralarson2@wisc.edu

Purpose

To evaluate various feedstocks and operational parameters for anaerobic digesters, including impacts to biogas production, quality, and operational issues.

What Did We Do?

Evaluated numerous co-feedstocks with manure in laboratory and large scale systems to identify biogas production impacts and potential operational issues associated with each.

What Have We Learned?

Analysis of ffedstocks is critical for determination of digester fundtioning.  Constituents can significantly impact the quantity and quantity of biogas produced.

Future Plans

To evaluate scale up to determine if small scale biomethane potential analyses can be used to determine full scale biogas production.

Authors

Rebecca Larson, Assistant Professor, University of Wisconsin - Madison

Corresponding author email address   ralarson2@wisc.edu

Asli Ozkaynak, Post-Doctoral Researcher, University of Wisconsin - Madison

Additional Information

Data is to be published

Acknowledgements

 

Funded by the USDA

 

The authors are solely responsible for the content of these proceedings. The technical information does not necessarily reflect the official position of the sponsoring agencies or institutions represented by planning committee members, and inclusion and distribution herein does not constitute an endorsement of views expressed by the same. Printed materials included herein are not refereed publications. Citations should appear as follows. EXAMPLE: Authors. 2013. Title of presentation. Waste to Worth: Spreading Science and Solutions. Denver, CO. April 1-5, 2013. URL of this page. Accessed on: today’s date.

Anaerobic Digestion: Co-Digestion and Operational Issues from LPE Learning Center

Connect with us

  • Twitter
  • Facebook
  • YouTube

Welcome

This is where you can find research-based information from America's land-grant universities enabled by eXtension.org

LOCATE

USDA / NIFA

This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.