Skip to main content

MECHANISMS FOR GENERATION AND CONTROL OF TRIMETHYL AMINE AND DIMETHYL DISULFIDE FROM LIME STABILIZED BIOSOLIDS

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

Abstract:

Lime stabilization can produce “fishy” or “rotten cabbage” like odor. In this paper, chemical odor analysis (static headspace, cryogenic concentration-GC/MS) was used to show that methanethiol in biosolids or the water contained in biosolids is first sorbed by an acid-base reaction with lime and subsequently converted into dimethyldisulfide (DMDS, rotten cabbage odor). The reaction is catalyzed by lime and is completed within hours or days. Trimethylamine (TMA, fishy odor) was found by ion chromatography to be present in liquid and dewatered sludge in its ionized form, but the sludge did not have a fishy odor nor did it release TMA to the gas phase. However, after liming, the biosolids released TMA and had a fishy odor. It was therefore shown that liming does not cause TMA production, but rather, increases the pH and converts TMA from a non-volatile ionic form into an odorous unionized form. The TMA odor potential of limed biosolids (measured as the concentration of dissolved TMA that could evaporate completely over the time) can be in the order of a hundred million olfactory units (dilutions) per ton of biosolids. Anoxic treatment (nitrate amendment) eliminated organosulfur production while long-term anaerobic storage/digestion nearly eliminated organosulfur and TMA production. The proposed anaerobic mechanism is demethylation by methylotrophic methanogenic bacteria and formation of H2S and NH3.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864702785140528

Publication date: January 1, 2002

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 These proceedings are not peer reviewed.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
wef/wefproc/2002/00002002/00000005/art00021
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

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
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