Decolorization of Reactive Brilliant Blue KN-R by Immobilized Cells of Rhodocyclus gelatinosus

Ming Chen; Chun Zhi Zhang; Yan Shen; Guo Ren Zu

doi:10.4028/www.scientific.net/AMR.610-613.9

Paper Titles

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Decolorization of Reactive Brilliant Blue KN-R by Immobilized Cells of Rhodocyclus gelatinosus
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Effects of Colloids on the Nitrogen Fixation Rates in Surface Water in Beibu Gulf of China
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Enzymatic Treatment Effects on Waste Activated Sludge from Pulp and Paper Industry
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The Effects of Turbulence on the Polysaccharides Content and Colony Formation of Microcystis under Different Nutrition Conditions
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Pentafluorophenyl Hydrazine as a Derivatization Agent for the Determination of Twenty Carbonyl Compounds in the Atmosphere
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The Uranium Biosorption by Chlorella Pyrenoidosa and its Physiological Responses to Uranium
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 610-613Decolorization of Reactive Brilliant Blue KN-R by...

Decolorization of Reactive Brilliant Blue KN-R by Immobilized Cells of Rhodocyclus gelatinosus

Abstract:

Reactive Brilliant Blue KN-R is a typical kind of anthraquinone dye and in common use in textile, dyeing, and printing industries in China, which is difficult to degrade because of its conjugated structure. The decolorization of KN-R was investigated using Ca-alginate immobilized cells of Rhodocyclus gelatinosus XL-1 under anaerobic conditions. For KN-R decolorization by immobilized cells, the suitable pH is 5-8 and the suitable temperature is 25-40 °C. Immobilized cells could decolorize KN-R by co-metabolism in the presence of peptone, and the enhancement of peptone concentration was beneficial for anaerobic decolorization. Metal ions affected the metabolic activity of immobilized cells of R. gelatinosus XL-1. The activity of KN-R decolorization was appreciably increased by Mg²⁺ and Cr³⁺, but severely inhibited by Cu²⁺ and Ag⁺. The maximum absorption peak in visible spectrum shifted from 595 to 453 nm during KN-R decolorization, indicating the formation of the intermediate product.