Dissimilatory iron reduction and odor indicator abatement by biofilm communities in swine manure microcosms.

ABSTRACT: Animal waste odors arising from products of anaerobic microbial metabolism create community relations problems for livestock producers. We investigated a novel approach to swine waste odor reduction: the addition of FeCl(3), a commonly used coagulant in municipal wastewater treatment, to stimulate degradation of odorous compounds by dissimilatory iron-reducing bacteria (DIRB). Two hypotheses were tested: (i) FeCl(3) is an effective source of redox-active ferric iron (Fe(3+)) for dissimilatory reduction by bacteria indigenous to swine manure, and (ii) dissimilatory iron reduction results in significant degradation of odorous compounds within 7 days. Our results demonstrated that Fe(3+) from FeCl(3) was reduced biologically as well as chemically in laboratory microcosms prepared with prefilt

SUBMITTER: Castillo-Gonzalez HA 

PROVIDER: S-EPMC1214689 | biostudies-literature | 2005 Sep

REPOSITORIES: biostudies-literature