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Rapid deodorization of cattle feces by microorganisms
AbstractCattle feces, a malodorous substance causing environmental pollution, can be deodorized by microorganisms. Optimum conditions are: temperature, 30–40°C; pH, 7–9; moisture content, 35–52%; and minimum inoculum size, 10% (w/w). For rapid deodorization, a porosity of 2·0–2·5 (liters/kg) was necessary, which was accomlpished by the addition of agricultural wastes such as rice hull, cut rice straw, or sawdust to the mixture of feces and seed culture. Without these wastes, the amount of seed culture could be increased to give the same porosity. The mixture was placed in a wooden box with wire net across the bottom to allow for aeration. During deodorization, the numbers of actinomycetes and thermophilic bacteria increased. Malodorous sulfur compounds such as H2S, and low-molecular-weight fatty acids which are characteristic malodorants of cattle feces, could scarcely be detected in the deodorized feces. Many deodorant microorganisms were isolated on cattle feces-extract-agar medium from the seed culture, some of which were identified as Corynebacterium spp., Flavobacterium spp., Streptomyces spp., and Thermoactinomyces spp. Chemical analysis showed that the deodorized feces could be useful as manure.
Rapid deodorization of cattle feces by microorganisms
AbstractCattle feces, a malodorous substance causing environmental pollution, can be deodorized by microorganisms. Optimum conditions are: temperature, 30–40°C; pH, 7–9; moisture content, 35–52%; and minimum inoculum size, 10% (w/w). For rapid deodorization, a porosity of 2·0–2·5 (liters/kg) was necessary, which was accomlpished by the addition of agricultural wastes such as rice hull, cut rice straw, or sawdust to the mixture of feces and seed culture. Without these wastes, the amount of seed culture could be increased to give the same porosity. The mixture was placed in a wooden box with wire net across the bottom to allow for aeration. During deodorization, the numbers of actinomycetes and thermophilic bacteria increased. Malodorous sulfur compounds such as H2S, and low-molecular-weight fatty acids which are characteristic malodorants of cattle feces, could scarcely be detected in the deodorized feces. Many deodorant microorganisms were isolated on cattle feces-extract-agar medium from the seed culture, some of which were identified as Corynebacterium spp., Flavobacterium spp., Streptomyces spp., and Thermoactinomyces spp. Chemical analysis showed that the deodorized feces could be useful as manure.
Rapid deodorization of cattle feces by microorganisms
Ohta, Yoshiyuki (author) / Kuwada, Yukio (author)
Biological Wastes ; 24 ; 227-240
1987-10-10
14 pages
Article (Journal)
Electronic Resource
English
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