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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.6
- 수록면
- 309 - 317 (9page)
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초록· 키워드
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This study evaluated the kinetics of acrylamide (AM) biodegradation by mixed culture bacteria and Enterobacter aerogenes (E. aerogenes) in sequencing batch reactor (SBR) systems with AQUASIM and linear regression. The zero-order, first-order, and Monod kinetic models were used to evaluate the kinetic parameters of both autotrophic and heterotrophic nitrifications and both AM and chemical oxygen demand (COD) removals at different AM concentrations of 100, 200, 300, and 400 mg AM/L. The results revealed that both autotrophic and heterotrophic nitrifications and both AM and COD removals followed the Monod kinetics. High AM loadings resulted in the transformation of Monod kinetics to the first-order reaction for AM and COD removals as the results of the compositions of mixed substrates and the inhibition of the free ammonia nitrogen (FAN). The kinetic parameters indicated that E. aerogenes degraded AM and COD at higher rates than mixed culture bacteria. The FAN from the AM biodegradation increased both heterotrophic and autotrophic nitrification rates at the AM concentrations of 100-300 mg AM/L. At higher AM concentrations, the FAN accumulated in the SBR system inhibited the autotrophic nitrification of mixed culture bacteria. The accumulation of intracellular polyphosphate caused the heterotrophic nitrification of E. aerogenes to follow the first-order approximation.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (21)
참고문헌 신청
US EPA. Toxicological review of acrylamide. Washington D.C.: U.S. Environmental Protection Agency; 2010. p. 5.
Charoenpanich J. Removal of acrylamide by microorganisms. In: Patil YB, Rao P, eds. Applied bioremediation-active and passive approaches. Croatia: InTech Open Science Online Publishers; 2013. p. 101-121.
Prabu CS, Thatheyus AJ. Biodegradation of acrylamide employing free and immobilized cells of Pseudomonas aeruginosa. Int. Biodeter. Biodegr. 2007;60:69-73.
Shanker R, Ramakrishna C, Seth PK. Microbial degradation of acrylamide monomer. Arch. Microbiol. 1990;154:192-198.
Buranasilp K, Charoenpanich J. Biodegradation of acrylamide by Enterobacter aerogenes isolated from wastewater in Thailand. J. Environ. Sci.-China. 2011;23:396-403.
Charoenpanich J. Removal of acrylamide by microorganisms. In: Patil YB, Rao P, eds. Applied bioremediation-active and passive approaches. Croatia: InTech Open Science Online Publishers; 2013. p. 101-121.
Prabu CS, Thatheyus AJ. Biodegradation of acrylamide employing free and immobilized cells of Pseudomonas aeruginosa. Int. Biodeter. Biodegr. 2007;60:69-73.
Shanker R, Ramakrishna C, Seth PK. Microbial degradation of acrylamide monomer. Arch. Microbiol. 1990;154:192-198.
Buranasilp K, Charoenpanich J. Biodegradation of acrylamide by Enterobacter aerogenes isolated from wastewater in Thailand. J. Environ. Sci.-China. 2011;23:396-403.
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UCI(KEPA) : I410-ECN-0101-2019-539-000342646