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초록· 키워드
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The bio-decolorization efficiency of bacteria in whole cells was studied for application in silk wastewater contaminated with commercial azo dyes, which are common raw materials for the textile industry. The physicochemical parameters affecting decolorization efficiency were investigated in silk dyes reduction for the selection of an effective strain. Streptomyces coelicoflavus CS-29 was the best strain for dyes reduction, possibly with adsorption mechanism. S. coelicoflavus CS-29 exhibited a high percentage of dyes reduction at 35℃ for azo blue dye and 30℃ for azo red dye; moreover, it was able to reduce dyes content at 40~45℃. The dye reduction of S. coelicoflavus CS-29 was optimized at pH 6~8 when decreasing both acidic azo blue and red dyes. Decolorization efficiency was above 90% for blue dye and more than 70% for red dye with an initial concentration of 300 ㎎/L of dyes. With high percentage decolorization, the mycelial cells aggregated with dyes resulting in increasing rapidly in decolorization within 3 days. Morphological observation showed that the mycelial cell of S. coelicoflavus CS-29 aggregated with dye molecules forming a dense cell pellet. This bacterium is a potential strain for application in textile dye reduction.
목차
Materials and Methods
Results and Discussion
References
참고문헌 (20)
참고문헌 신청
Bunti? AV, Pavlovi? MD, Antonovi? DG, ?iler-Marinkovi? SS, and Dimitrijevi?-Brankovi? SI. 2017. A treatment of wastewater containing basic dyes by the use of new s train Streptomyces microflavus CKS6. J. Clean. Prod. 148, 347?354.
Das A and Mishra S. 2016. Decolorization of different textile azo dyes using an isolated bacterium Enterococcus durans GM13. Int. J. Curr. Microbiol. Appl. Sci. 5, 675?686.
Ghaly A, Ananthashankar R, Alhattab M, and Ramakrishnan V. 2014. Production, characterization and treatment of textile effluents: a critical review. J. Chem. Eng. Process Technol. 5, 1000182.
Gupta VK and Suhas. 2009. Application of low-cost adsorbents for dye removal - a review. J. Environ. Manage. 90, 2313?2342.
Hassaan MA and Nemr AE. 2017. Health and environmental impacts of dyes: mini review. Am. J. Environ. Sci. Eng. 1, 64?67.
Das A and Mishra S. 2016. Decolorization of different textile azo dyes using an isolated bacterium Enterococcus durans GM13. Int. J. Curr. Microbiol. Appl. Sci. 5, 675?686.
Ghaly A, Ananthashankar R, Alhattab M, and Ramakrishnan V. 2014. Production, characterization and treatment of textile effluents: a critical review. J. Chem. Eng. Process Technol. 5, 1000182.
Gupta VK and Suhas. 2009. Application of low-cost adsorbents for dye removal - a review. J. Environ. Manage. 90, 2313?2342.
Hassaan MA and Nemr AE. 2017. Health and environmental impacts of dyes: mini review. Am. J. Environ. Sci. Eng. 1, 64?67.
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