Skip to main content

Using a Biotrickling Filter System to Remove Hydrogen Sulfide from Digester Gas

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial


Digester gas usually contains a mixture of methane, carbon dioxide, and a small amount of hydrogen sulfide (H2S ontrolled, H2S can contribute to odors, cause corrosion problems, and lead to sulfur oxides (SOX) formation if digester gas is combusted. The Los Angeles County Sanitation Districts (Districts) use iron salt to control H2S levels in the headspace of anaerobic digesters at the Joint Water Pollution Control Plant (JWPCP) in Carson, California. With increasing chemical costs, the Districts decided to explore the possibility of using biological methods for H2S control. In this study, the Districts used a pilot-scale biotrickling filter system to investigate the conditions under which H2S could be effectively removed from the JWPCP digester gas. Results from the study indicated that greater than 95% of H2S in the digester gas could be removed at an empty bed residence time (EBRT) of 15 seconds at an H2S concentration of 30 ppmv/v. To achieve greater than 95% of H2S removal at a H2S concentration of 200 ppmv/v, an EBRT of approximately 20 seconds was necessary. The biotrickling filter media became clogged after seven weeks of operation at the elevated H2S concentrations (200 ppmv/v). Fouling was determined to be due to elemental sulfur being deposited on the biotrickling filter media. Research is on-going to determine the operating conditions that will minimize media fouling and media cleaning methods to allow treatment of digester gas containing H2S in the range of 200 ppmv/v.

Keywords: Biotrickling filter; anaerobic digestion; hydrogen sulfide removal

Document Type: Research Article


Publication date: January 1, 2010

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 These proceedings are not peer reviewed.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
  • Ingenta Connect is not responsible for the content or availability of external websites

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
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