벤치규모 생물반응기에서 Shinella granuli CK-4에 의한 1,4-Dioxane의 생분해에 영향을 미치는 물리화학적 요인The Effects of Several Physicochemical Factors on the Degradation of 1,4-Dioxane by Shinella granuli CK-4 in Bench-scale Bioreactors
- Other Titles
- The Effects of Several Physicochemical Factors on the Degradation of 1,4-Dioxane by Shinella granuli CK-4 in Bench-scale Bioreactors
- Authors
- 오계헌; 최문섭; 최기승
- Issue Date
- Jun-2021
- Publisher
- 한국생물공학회
- Keywords
- Shinella granuli CK-4; 1; 4-dioxane; biodegradation; industrial wastewater
- Citation
- Korean Society for Biotechnology and Bioengineering Journal, v.36, no.2, pp 171 - 179
- Pages
- 9
- Journal Title
- Korean Society for Biotechnology and Bioengineering Journal
- Volume
- 36
- Number
- 2
- Start Page
- 171
- End Page
- 179
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/18808
- DOI
- 10.7841/ksbbj.2021.36.2.171
- ISSN
- 1225-7117
2288-8268
- Abstract
- Our previous research has demonstrated that Shinella granuli CK-4 is capable of utilizing 1,4-dioxane as its sole source of carbon and energy when isolated from industrial wastewater [1]. In this study, we have extended this work to investigate the relationships between 1,4-dioxane degradation and the strain CK-4 and several relevant physicochemical environmental parameters in 3 L bench-scale bioreactors.
One gram of 1,4-dioxane per liter was completely degraded within 96 hours of incubation, and the optimum temperature for 1,4-dioxane degradation was 30oC. 1,4-Dioxane degradation by CK-4 gradually increased as a function of airflow rate and agitation speed, and the optimum airflow rate and agitation speed were 2.5 L/min and 500 rotation per minutes, respectively, in this study. The addition of 50 mg/L tetrahydrofuran as a supplemental carbon source was found to stimulate the maximal bacterial growth and 1,4-dioxane degradation.
The optimum results obtained from these experiments were combined and applied for 1,4-dioxane degradation. As a result, the complete degradation of 1,4-dioxane was achieved with the CK-4 culture within 72 hours of incubation. We explored the feasibility of using the cultures of S. granuli CK-4 for the degradation of 1,4-dioxane with the aim of microbial application in industrial wastewater treatment in bench-scale bioreactors.
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