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Effects of Bacillus and Endospore Germinations on Organic Matter Removal  

Nam, Ji-Hyun (Department of Microbiology and the Biotechnology Research Institute, Chungbuk National University)
Bae, Woo-Keun (Department of Civil and Environmental System Engineering, Hanyang University)
Lee, Dong-Hun (Department of Microbiology and the Biotechnology Research Institute, Chungbuk National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.29, no.2, 2007 , pp. 169-175 More about this Journal
Abstract
The Bio Best Bacillus(B3) and Rotating Activated Bacillus Contactor(RABC) processes, in which Bacillus strains are predominating, are reported to remove nitrogen and phosphorus as well as organic matter effectively. Nevertheless the nutrient removal characteristics of the Bacillus strains have not been studied in detail so far. This study investigated the organic and nutrient removal by Bacillus strains, Bacillus megaterium(KCTC 3007), Paenibacillus polymyxa(KCTC 3627), and Bacillus sp. A12, C21, F12, and L1(isolated from a B3 process), by incubating the strains in 0.2% nutrient broth at $30^{\circ}C$. Burkholderia cepacia(KCTC 2966), a common activated sludge organism, was used as a reference species for comparison. Although the degradation rate was affected by the population sire, the specific removal rates of organic matter by Bacillus strains were greater by $2\sim5$ times than that of Burkholderia. In particular, the culture bottles inoculated with the endospores of Bacillus megaterium and Bacillus sp. C21, F12, and N12 showed significantly higher degradation rate than those of vegetative cells.
Keywords
Bacillus; Endospore; Germination; Organic Matter Removal;
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Times Cited By KSCI : 1  (Citation Analysis)
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