Biological control of hog waste odor through stimulated microbial Fe(III) reduction.

ABSTRACT: Odor control and disposal of swine waste have inhibited expansion of swine production facilities throughout the United States. Swine waste odor is associated primarily with high concentrations of volatile fatty acids (VFAs). Here, we demonstrate that stimulated Fe(III) reduction in hog manure can rapidly remove the malodorous compounds and enhance methane production by 200%. As part of these studies, we enumerated the indigenous Fe(III)-reducing population in swine waste and identified members of the family Geobacteraceae as the dominant species. These organisms were present at concentrations as high as 2 x 10(5) cells g(-1). Several pure cultures of Fe(III) reducers, including Geobacter metallireducens, Geobacter humireducens, Geobacter sulfurreducens, Geobacter grbiciae, Geothrix ferment

SUBMITTER: Coates JD 

PROVIDER: S-EPMC1183269 | biostudies-literature | 2005 Aug

REPOSITORIES: biostudies-literature