Effect of free ammonia nitrogen on the methanogenic activity of swine wastewater
Electron. j. biotechnol
; 14(3): 2-2, May 2011. ilus, tab
Article
in En
| LILACS
| ID: lil-602979
Responsible library:
CL1.1
ABSTRACT
Swine wastewater is characterized by high organic matter content, solids, nitrogen (expressed as total ammonia and protein) and heavy metals. This work determines the methanogenic toxicity effect of free ammonia contained in swine wastewater comparing raw swine wastewater (RW) and the liquid fraction of swine wastewater (TW). The values of IC50 (50 percent of inhibition) obtained for methanogenic bacteria ranged between 56 and 84 percent for RW, meanwhile IC50 for TW was ranged between 84 and 94 percent. Such inhibitory effects can be related to the free ammonia nitrogen concentration (> 40 mg NH3-N/L) contained in swine wastewater.
Key words
Full text:
1
Index:
LILACS
Main subject:
Wastewater
/
Ammonia
/
Methane
/
Nitrogen
Limits:
Animals
Language:
En
Journal:
Electron. j. biotechnol
Journal subject:
BIOTECNOLOGIA
Year:
2011
Type:
Article
/
Project document