Growth characteristics of Acidithiobacillus thiooxidans in different sulfur concentrations
- Authors
- Lee, E.Y.; Cho, K.-S.; Hee, W.R.
- Issue Date
- 2006
- Keywords
- Acidithiobacillus thiooxidans; Growth rate; Sulfur concentration; Sulfur oxidation rate; Sulfur-oxidizing bacteria
- Citation
- Korean Journal of Microbiology and Biotechnology, v.34, no.4, pp.338 - 341
- Journal Title
- Korean Journal of Microbiology and Biotechnology
- Volume
- 34
- Number
- 4
- Start Page
- 338
- End Page
- 341
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/19154
- ISSN
- 1598-642X
- Abstract
- The growth characteristics of sulfur-oxidizing bacteria, Acidithiobacillus thiooxidans AZ11, MET, and TAS were investigated in mineral salt media supplemented with elemental sulfur of 1-50 g L-1. The sulfur oxidation rates of A. thiooxidans MET and TAS increased highly with increasing sulfur concentration up to 10 g L-1, but the rates increased slowly in sulfur concentration over 10 g L-1. A. thiooxidans AZ11 showed the parallel increase of sulfur oxidation rate until sulfur concentration increased up to 40 g L-1. The maximum sulfur oxidation rates (Vmax) of AZ11, MET and TAS were 1.88, 1.38 and 0.43 g S L-1 d _1, respectively. The maximum specific growth rates (μmax) of AZ11, MET, and TAS were 0.33 d-1, 0.30 d -1 and 0.45 d-1, respectively. Although MET and TAS couldn't grow at sulfate concentration of 40 g L-1, AZ11 could grow in the presence of 58 g L-1 sulfate, the final oxidation product of elemental sulfur.
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Collections - College of Engineering > Department of Chemical Engineering > 1. Journal Articles
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