Journal of Biotechnology 2001-08-23

Effect of some operational parameters on textile dye biodegradation in a sequential batch reactor.

N D Lourenço, J M Novais, H M Pinheiro

Index: J. Biotechnol. 89(2-3) , 163-74, (2001)

Full Text: HTML

Abstract

The combination of anaerobic and aerobic periods in the operation cycle of a Sequencing Batch Reactor (SBR) was chosen to study biological color removal from simulated textile effluents containing reactive, sulfonated, monoazo and diazo dyes, respectively, Remazol Brilliant Violet 5R and Remazol Black B. 90% color removal was obtained for the violet dye in a 24-h cycle with a Sludge Retention Time (SRT) of 15 days and an aerated reaction phase of 10 h. For the black dye only 75% color removal was achieved with the same operational conditions and no improvement was observed with the increase of the SRT to 20 days. For the violet dye a reduction of the color removal values from 90 to 75% was observed with the increase of the aerated reaction phase from 10 to 12 h. However, this increase did not promote the aerobic biodegradation of the produced aromatic amines. Abiotic tests were performed with sterilized SBR samples and no color removal was observed in cell-free supernatants. However color removal values of 30 and 12% were observed in the presence of sterilized cells and supernatants with violet and black dye, respectively and could be attributed to the presence of active reducing principles in the sterilized samples.


Related Compounds

Related Articles:

Kinetics and thermodynamics of textile dye adsorption from aqueous solutions using babassu coconut mesocarp.

2009-07-30

[J. Hazard. Mater. 166(2-3) , 1272-8, (2009)]

Decolorization and degradation of azo dye--Reactive Violet 5R by an acclimatized indigenous bacterial mixed cultures-SB4 isolated from anthropogenic dye contaminated soil.

2012-04-30

[J. Hazard. Mater. 213-214 , 378-86, (2012)]

Poly(acrylamide) functionalized chitosan: an efficient adsorbent for azo dyes from aqueous solutions.

2009-07-15

[J. Hazard. Mater. 166(1) , 327-35, (2009)]

Treatment of complex Remazol dye effluent using sawdust- and coal-based activated carbons.

2009-08-15

[J. Hazard. Mater. 167(1-3) , 790-6, (2009)]

Plasma methylumbelliferyl-tetra-N-acetyl-chitotetraoside hydrolase: further study of its characteristics as a chitinase and comparison with its activity on Remazol Brilliant Violet carboxymethyl chitin.

1997-12-10

[Clin. Chim. Acta 268(1-2) , 107-20, (1997)]

More Articles...