In this research, we designed the helical bioreactor for improving nitrification process and investigated the microbial community structure of nitrifying bacteria. The three 6L of laboratory scale bioreactor including the one control bioreactor were operated at batch mode and each batch trial was repeated four times. From the results, nitrification was successfully carried out at all experiment trials, then we could ascertain saving of aeration amount at the helical reactor up to 25 percent. The reaction time was gradually shortened along with repetition of batch trials. From its molecular analysis, it was quantified that five cluster of ammonia oxidizing bacteria were Nitrosomonas europaea, N. mobilis, N. nitrosa, N.cryotalerans and Nitrosospira cluster in the system through the real-time quantitative PCR. The major species was changed over the process operation from N.cryotolerans to N. europaea cluster. Especially, copy number of N.europaea increased one hundred times m than that at the initial condition. In case of nitrite oxidizing bacteria, the major species was shifted from Nitrosospira spp. to the Nitrobacter spp. These changes of the microbial community structure seem to have closely related to the reduction of reaction time and ecological characteristics.
Kyungjin CHO [ School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Kyungbuk 790-784, KOREA. ]
Hyunju YEO [ School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Kyungbuk 790-784, KOREA. ]
Seungyong LEE [ School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Kyungbuk 790-784, KOREA. ]
Seokhwan HWANG [ School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Kyungbuk 790-784, KOREA. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동
간행물
간행물명
한국생물공학회 학술대회
간기
반년간
수록기간
1985~2013
십진분류
KDC 476DDC 576
이 권호 내 다른 논문 / 한국생물공학회 학술대회 2011년도 한국생물공학회 춘계학술발표대회