KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Removal of Nitrogens and Phosphorus by Bacillus sp. CK-11 and Bacillus sp. CK-13 Isolated from Shrimp Farming Pond

새우양식장에서 분리한 Bacillus sp. CK-10과 Bacillus sp. CK-13에 의한 질소와 인의 제거

  • Chun Jae-Woo (Department of Life Science, Soonchunhyang University) ;
  • Ma Chae-Woo (Department of Life Science, Soonchunhyang University) ;
  • Lee Sang-Hyun (Department of Life Science, Soonchunhyang University) ;
  • Oh Kye-Heon (Department of Life Science, Soonchunhyang University)
  • 천재우 (순천향대학교 생명과학부) ;
  • 마채우 (순천향대학교 생명과학부) ;
  • 이상현 (순천향대학교 생명과학부) ;
  • 오계헌 (순천향대학교 생명과학부)
  • Published : 2005.04.01
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Abstract

The feasibility of using bacterial cultures with the ultimate aim for the marine environmental clean-up was explored. The present study reports on the bacterial elimination of nitrogens and phosphorus by strains CK-10 and CK-13 isolated from shrimp farming pond. The strains were identified as genus Bacillus on the basis of BIOLOG test, and designated as Bacillus sp. CK-10 and Bacillus sp. CK-13, respectively. Removal of nitrogens $(NH_4^+,\;NO_2^-,\;or\;NO_3^-)$ or phosphorus $(PO_4^{-3})$ as single N or P source was studied with single cultures under aerobic conditions. Complete elimination of all nitrogens in the concentration range of $100-400{\mu}M$ was achieved in single cultures as well as co-cultures within the given incubation period. Similar results were obtained from the test cultures containing $125-599{\mu}M\;PO_4^{3-}$. Simultaneous removal of all N/P was monitored in the co-cultures. As the results, $400{\mu}M\;NH_4^+\;and\;NO_2^-$ were eliminated within 12hrs and $400{\mu}M\;NO_3^-\;and\;500{\mu}M\;PO_4^{-3}$ were completely disappeared within 36 hrs from the media. The work demonstrated that co-cultures improved the concurrent removal of N/P from the media.

세균배양이 해양환경정화를 궁극적인 목적으로 사용 가능한지에 대하여 조사하였다. 본 연구는 새우양식장에서 분리한 균주 CK-10과 CK-13을 이용하여 질소와 인을 제거하는 연구이다. BIOLOG 시험을 통하여 세균들은 Bacillus subtilis CK-1과 Bacillus sp. CK-13으로 각각 명명되었다. 호기적 조건하에서 단일 N/P 원으로서 질소 $(NH_4^+,\;NO_2^-,\;or\;NO_3^-)$와 인$(PO_4^{3-})$의 제거에 대한 연구가 CK-10이나 CK-13의 단일배양에 의하여 수행되었다. 주어진 배양기간 이내에 $100-400{\mu}M$ 농도범위에 있는 $NH_4^+,\;NO_2^-$, 또는 $NO_3^-$의 완전제거가 단일배양과 혼합배양에서 이루어졌다. $125-599{\mu}M$ 농도의 $PO_4^{3-}$을 포함하는 배양에서 유사한 결과가 얻어졌다. 혼합배양에서 N/P의 동시제거 실험을 실시하였다. 그 결과, $400{\mu}M\;NH_4^+$와 $NO_2^-$는 12시간 이내에 제거되었고, $NO_3^-$는 36시간 이내에 각각 제거되었으며, $500{\mu}M\;PO_4^{3-}$도 36시간 이내에 제거되었다. 이 연구를 통해서 혼합배양은 N/P의 동시 제거율을 크게 향상시키는 것으로 확인되었다.

Keywords

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