Journal
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Volume 65, Issue 3, Pages 494-503Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ibiod.2011.01.012
Keywords
Decolorization; Luffa cylindrica; Loofa; Reactive Blue 172; Proteus vulgaris NCIM-2027; Fixed bed bioreactor; Immobilized cells
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Proteus vulgaris NCIM-2027 cells immobilized on Luffa cylindrica (Loofa) completely decolorized C.I. Reactive Blue 172 at 37 degrees C and ph 8.0 under 5-h static incubation with high total organic carbon (TOC) and chemical oxygen demand (COD) reduction. The repeated-batch decolorization experiments also indicate good reusability of the immobilized biocatalyst. Some oxidoreductive enzymes were shown to be involved in the decolorization and degradation process. Loofa immobilized cells were also able to decolorize a mixture of reactive dyes in batch mode (in terms of ADMI value) with significant reduction in TOC and COD. Loofa immobilized cells were also used for continuous decolorization of individual and mixture of reactive dyes in a fixed bed bioreactor. (C) 2011 Elsevier Ltd. All rights reserved.
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