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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.9
- 수록면
- 376 - 381 (6page)
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초록· 키워드
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In this study, a poly(vinyl) alcohol/sodium alginate (PVA/SA) mixture was used to fabricate core-shell structured gel beads for autotrophic single-stage nitrogen removal (ASNR) using aerobic and anaerobic ammonia-oxidizing bacteria (AAOB and AnAOB, respectively). For stable ASNR process, the mechanical strength and oxygen penetration depth of the shell layer entrapping the AAOB are critical properties. The shell layer was constructed by an interfacial gelling reaction yielding thickness in the range of 2.01-3.63 ㎜, and a high PVA concentration of 12.5% resulted in the best mechanical strength of the shell layer. It was found that oxygen penetrated the shell layer at different depths depending on the PVA concentration, oxygen concentration in the bulk phase, and free ammonia concentration. The oxygen penetration depth was around 1,000 ㎛ when 8.0 ㎎/L dissolved oxygen was supplied from the bulk phase. This study reveals that the shell layer effectively protects the AnAOB from oxygen inhibition under the aerobic conditions because of the respiratory activity of the AAOB.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (13)
참고문헌 신청
Varas R, Guzman-Fierro V, Giustinianovich E, Behar J, Fernandez K, Roeckel M. Startup and oxygen concentration effects in a continuous granular mixed flow autotrophic nitrogen removal reactor. Bioresour. Technol. 2015;190:345-351.
Vlaeminck SE, De Clippeleir H, Verstraete W. Microbial resource management of one-stage partial nitritation/anammox. Microb. Biotechnol. 2012;5:433-448.
Qiao S, Tian T, Duan X, Zhou J, Cheng Y. Novel single-stage autotrophic nitrogen removal via co-immobilizing partial nitrifying and anammox biomass. Chem. Eng. J. 2013;230:19-26.
Bae H, Choi M, Chung YC, Lee S, Yoo YJ. Core-shell structured poly(vinyl alcohol)/sodium alginate bead for single-stage autotrophic nitrogen removal. Chem. Eng. J. 2017;322:408-416.
dos Santos VAM, Vasilevska T, Kajuk B, Tramper J, Wijffels RH. Production and characterization of double-layer beads for coimmobilization of microbial cells. Biotechnol. Annu. Rev. 1997;3:227-244.
Vlaeminck SE, De Clippeleir H, Verstraete W. Microbial resource management of one-stage partial nitritation/anammox. Microb. Biotechnol. 2012;5:433-448.
Qiao S, Tian T, Duan X, Zhou J, Cheng Y. Novel single-stage autotrophic nitrogen removal via co-immobilizing partial nitrifying and anammox biomass. Chem. Eng. J. 2013;230:19-26.
Bae H, Choi M, Chung YC, Lee S, Yoo YJ. Core-shell structured poly(vinyl alcohol)/sodium alginate bead for single-stage autotrophic nitrogen removal. Chem. Eng. J. 2017;322:408-416.
dos Santos VAM, Vasilevska T, Kajuk B, Tramper J, Wijffels RH. Production and characterization of double-layer beads for coimmobilization of microbial cells. Biotechnol. Annu. Rev. 1997;3:227-244.
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UCI(KEPA) : I410-ECN-0101-2019-539-000446643