KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Microbe Isolation and Optimization for the Decolorization of Reactive Dye

반응성 염료의 색도 제거를 위한 균주 분리 및 최적화

  • Published : 2004.06.01
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Abstract

For decolorization of various reactive dyes, 13 species of microbes were isolated from dyeing wastewater collected from Banweol industrial complex, Korea. Two strains among them showed good ability for removing celerity during the decolorization test with 5 different reactive dyes. And the optimal growth conditions were pH 7, 35$^{\circ}C$, yeast extract as nitrogen source, glucose as carbon source, and facultative anaerobic condition. As results, when Reactive Red 180 was used, 89 and 87% of decolorization efficiency were able to be obtained by using Bacillus anthracis and Bacillus cereus, respectively. Especially, Bacillus cereus showed good ability for decolorization of Reactive Blue 21, and the ratio was 76% Finally, it was considered that these two strains isolated in this study will be showed high decolorization ability to treat dyeing wastewater.

반월공단의 염색폐수와 염료폐수를 균원시료로 하여 반응성 염료의 색도제거능이 나타난 13종의 균주를 분리하고, 산소농도에 따른 영향을 살펴보기 위하여 교반에 따른 색도제거율을 살펴 본 결과, 교반을 진행하지 않은 경우 효율이 더 높은 효율을 얻을 수 있었다. 또한, 5가지 반응성 염료 (reactive blue 19, reactive blue 21, reactive red 180, reactive red 195, reactive yellow 145)를 가지고 색도제거 실험을 진행한 결과 2종의 균주가 높은 효율을 보였다. 이 2종의 균주를 동정한 결과 Bacillus anthracis와 Bacillus cereus로 판명되었다. 최적 조건을 살펴보기 위하여 온도와 초기 pH 영향에 따른 색도 제거율을 알아보기 위하여 실험을 진행한 결과 35$^{\circ}C$, pH 7에서 높은 색도제거율을 보였다. 또한 탄소원과 질소원에 따른 영향을 살펴보기 위하여 Bacillus anthracis로 실험한 결과 glucose, yeast extract를 사용한 경우 89%의 높은 색도 제거율을 얻을 수 있었다. 이러한 결과로 미루어 볼 때 분리된 두 균주는 염색폐수의 색도제거에 효과적인 균주라고 사료된다.

Keywords

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