Journal of Korean Society of Water Science and Technology (한국수처리학회지)

Korean Society of Water Science and Technology (한국수처리학회)
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Color Removal of The Reactive Dyes Using Isolated Strains

고활성 균주를 이용한 반응성 염료의 색도 제거

  • Published : 2012.04.30
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Abstract

Strains degrading and decolorizing reactive dyes, Procion blue HEGN and Procion red HE7B were isolated from water system, are named RBK1 and RBK, the growth characteristics of which were investigated. Decolorization efficiencies after 42hours in batch culture were 95% and 77%, respectively, and the optimal culture conditions of temperature and pH were $30^{\circ}C$, and 7.0. Decolorization efficiencies in condition of aerobic shaking culture by strains RBK1 and RRK were conspicuously increased, and culture by strain RBK1 was found as 95% after 42 hours, while standing culture was 64%. Optimum nitrogen source was peptone, and it was found that decolorization efficiencies by strains RBK1 and RRK increased up to $4,000mg/{\ell}$ of peptone concentration as nitrogen source, but peptone concentration did not influence the decolorization efficiency of $4,000mg/{\ell}$and over. When the concentration of dyes were more than $800mg/{\ell}$ and $400mg/{\ell}$, respectively, the strains RBK1 and RRK, which degrade Procion blue HEGN and Procion red HE7B, showed rapid decrease of the decolorization efficiencies; then the specific grow rate were $0.25h^{-1}$ and $0.09h^{-1}$.

Keywords

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