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Sequential anaerobic-aerobic treatment of azo dyes: Decolourisation and amine degradability

Jonstrup, Maria LU ; Kumar, Naresh LU ; Murto, Marika LU and Mattiasson, Bo LU (2011) In Desalination 280(1-3). p.339-346
Abstract
The feasibility of sequential anaerobic-aerobic treatment for complete dye degradation was evaluated using three azo dyes, namely Remazol Red RR, Remazol Blue RR and Remazol Yellow RR. The robustness of the anaerobic treatment was investigated in biofilm reactors and the influences of carrier type, hydraulic retention time, dye concentration and dye type were studied. A decolourisation of 98% was obtained in the anaerobic reactors with Poraver carriers whilst decolourisation was slightly lower in the reactors with Kaldnes carriers, which could be attributed to differences in biofilm structure. Almost complete decolourisation could be achieved at dye concentrations between 100 and 2000 mg l(-1) even when the reactors were not adapted to the... (More)
The feasibility of sequential anaerobic-aerobic treatment for complete dye degradation was evaluated using three azo dyes, namely Remazol Red RR, Remazol Blue RR and Remazol Yellow RR. The robustness of the anaerobic treatment was investigated in biofilm reactors and the influences of carrier type, hydraulic retention time, dye concentration and dye type were studied. A decolourisation of 98% was obtained in the anaerobic reactors with Poraver carriers whilst decolourisation was slightly lower in the reactors with Kaldnes carriers, which could be attributed to differences in biofilm structure. Almost complete decolourisation could be achieved at dye concentrations between 100 and 2000 mg l(-1) even when the reactors were not adapted to the specific dye. The fate of the metabolites during aerobic treatment was followed: however, only partial degradation of the aromatic amines could be achieved. The metabolites from Remazol Yellow RR auto-oxidised upon exposure to aerobic conditions forming a product, which resisted further degradation. Additional batch tests were conducted using aerobic sludge from a textile and a chemical industry but neither of these inocula was able to completely degrade the recalcitrant amines. This shows the need of a post-treatment to be able to ensure complete amine degradation. (C) 2011 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Aromatic amine, Azo dye, Biodegradation, Decolourisation, Textile, wastewater
in
Desalination
volume
280
issue
1-3
pages
339 - 346
publisher
Elsevier
external identifiers
  • wos:000296365800046
  • scopus:80053318745
ISSN
1873-4464
DOI
10.1016/j.desal.2011.07.022
language
English
LU publication?
yes
id
13467d7b-928a-44e5-9a73-ae07cdf1ca93 (old id 2254492)
date added to LUP
2011-12-20 09:14:47
date last changed
2017-11-05 03:08:54
@article{13467d7b-928a-44e5-9a73-ae07cdf1ca93,
  abstract     = {The feasibility of sequential anaerobic-aerobic treatment for complete dye degradation was evaluated using three azo dyes, namely Remazol Red RR, Remazol Blue RR and Remazol Yellow RR. The robustness of the anaerobic treatment was investigated in biofilm reactors and the influences of carrier type, hydraulic retention time, dye concentration and dye type were studied. A decolourisation of 98% was obtained in the anaerobic reactors with Poraver carriers whilst decolourisation was slightly lower in the reactors with Kaldnes carriers, which could be attributed to differences in biofilm structure. Almost complete decolourisation could be achieved at dye concentrations between 100 and 2000 mg l(-1) even when the reactors were not adapted to the specific dye. The fate of the metabolites during aerobic treatment was followed: however, only partial degradation of the aromatic amines could be achieved. The metabolites from Remazol Yellow RR auto-oxidised upon exposure to aerobic conditions forming a product, which resisted further degradation. Additional batch tests were conducted using aerobic sludge from a textile and a chemical industry but neither of these inocula was able to completely degrade the recalcitrant amines. This shows the need of a post-treatment to be able to ensure complete amine degradation. (C) 2011 Elsevier B.V. All rights reserved.},
  author       = {Jonstrup, Maria and Kumar, Naresh and Murto, Marika and Mattiasson, Bo},
  issn         = {1873-4464},
  keyword      = {Aromatic amine,Azo dye,Biodegradation,Decolourisation,Textile,wastewater},
  language     = {eng},
  number       = {1-3},
  pages        = {339--346},
  publisher    = {Elsevier},
  series       = {Desalination},
  title        = {Sequential anaerobic-aerobic treatment of azo dyes: Decolourisation and amine degradability},
  url          = {http://dx.doi.org/10.1016/j.desal.2011.07.022},
  volume       = {280},
  year         = {2011},
}