서지주요정보
고정화 세포를 이용한 철 산화 속도 증진에 관한 연구 = A study on the enhancement of iron oxidation rate by immobilized cells
서명 / 저자 고정화 세포를 이용한 철 산화 속도 증진에 관한 연구 = A study on the enhancement of iron oxidation rate by immobilized cells / 김태완.
저자명 김태완 ; Kim, Tae-Wan
발행사항 [대전 : 한국과학기술원, 1999].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8009415

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 99008

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

In a chemo-biological process, an alternative for the treatment of $H_2S-$containing gases, biological Fe(II) oxidation is usually the rate limiting step. This study was aimed to enhance the Fe(II) oxidation rate using immobilized cells of Thiobacillus ferrooxidans. For this purpose, a medium for the minization of jarosite formation was developed first. Secondly, cell immobilization in celite beads and depth filter was carried out. And then, repeated-batch and continuous operations of Fe(II) oxidation by using the immobilized cells were performed. In a series of flask cultures, three types of media were tested : media with much lower salt concentrations than that of the 9K midium; media which contained different nitrogen sources from that of the 9K medium, that is, $(NH_4)_2HPO_4$, $NH_4Cl$ and $HNO_3$; media which contained $(NH_4)_2HPO_4$ as nitrogen and phosphate source, but without $K_2HPO_4$, the phosphate source in the 9K midium. As a result, the M16 medium which contained 3g/L of $(NH_4)_2HPO_4$ as nitrogen and phosphate source was found to be the optical one. It sustained good cell growth allowing no jarosite formation. Two immobilized bioreactor systems with celite beads in an airlift reactor and a depth filter, respectively, as support material were employed in carrying out repeated-batch and continuous operations. In repeated-batch operation, both system a similar trend to each other. The rate of Fe(II) oxidation gradually increased to reach a maximum value as the batch was repeated. The bioreactor with depth filter displayed a maximum Fe(II) oxidation rate of 2.4 g/L·h whereas the airlift reactor with celite beads showed 2.33 g/L·h. In continuous operations, both system showed a maximum Fe(II) oxidation rate at a dilution rate greater than the maximumspecific growth rate of the bacteria. By using the bioreactor with depth filter, the iron oxidation rate could be increased to 2.6 g.L·h at a dilution rate of 0.3 $h^{-1}$. In the case of the airlift reactor with celite beads, the maximum Fe(II) oxidation rate was 2.14 g/L·h at a dilution rate of 0.25 $h^{-1}$.

서지기타정보

서지기타정보
청구기호 {MCHE 99008
형태사항 viii, 68 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Tae-Wan Kim
지도교수의 한글표기 : 장용근
지도교수의 영문표기 : Yong-Keun Chang
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 65-68
주제 고정화 세포
철 산화 속도
티오바실러스 페로옥시단스
화학-생물학적 복합공정
Immobilized cells
Iron oxidation rate
Thiobacillus ferrooxidans
Chemo-biological process
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