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Microbial treatment of textile wastewater applicable in developing countries
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Miljöbioteknik)ORCID iD: 0000-0001-8179-1446
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Växjö, Kalmar: Linnaeus University Press, 2013.
Series
Linnaeus University Disserations, 114/2013
Keyword [en]
Biotreatment, Biodegradation, Biofilter, Textile wastewater, Azo dyes, Industrial wastewaters, indigenous decolorizers, LC-MS, Anaerobic and aerobic water treatment
National Category
Environmental Biotechnology
Research subject
Environmental Science, Environmental technology
Identifiers
URN: urn:nbn:se:lnu:diva-23507ISBN: 978-91-87427-02-2 (print)OAI: oai:DiVA.org:lnu-23507DiVA: diva2:589256
Public defence
2013-02-08, M1083, Hus M, Växjö, 12:44 (English)
Opponent
Supervisors
Available from: 2013-01-18 Created: 2013-01-17 Last updated: 2016-04-11Bibliographically approved
List of papers
1. Decolourization of reactive azo dyes with microorganisms growing on soft wood chips
Open this publication in new window or tab >>Decolourization of reactive azo dyes with microorganisms growing on soft wood chips
2009 (English)In: International Biodeterioration & Biodegradation, ISSN 0964-8305, E-ISSN 1879-0208, ISSN 0964-8305, Vol. 63, 752-758 p.Article in journal (Refereed) Published
Abstract [en]

The decolourization of a mixture of 200 mg/l each of Reactive Black 5 and Reactive REd 2 dye was studied in batch experiments using microorganisms growing on forest residue wood chips in combination with or without added white-rot fungus, Bjerakndera sp. BOL 13. The study was performed as a first stage in the development of a relatively simple treatement process for textile wastewater, designed to work in developing countries. Forest residue wood chips contain a mixture of fungi and bacteria which is an advantage when complex molecules should be degraded. The wood chips furthermore provide the microorganisms with carbon source which make the addition of e.g. glucose unnecessary. The results showed that the microorganisms growing on the forest residue wood chips decolourized the mixture of the two dyes; adding extra nutrients approximately doubled the decolourization rate. The time needed for decolourization was approximately 18 days when nutrients were added. Lignocellulosic material is complex and so were the analysis, microorganisms were therfore transferred to ordinary soft wood chips from forest residue wood chips, Decolourization was measured with spectrophotometer an in order to determine intermediates HPLC was used.

Place, publisher, year, edition, pages
Elsevier, 2009
Keyword
textile dyes, biodegradation, anaerobic, HPLC, intermediates, fungi
National Category
Industrial Biotechnology
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
urn:nbn:se:vxu:diva-6348 (URN)10.1016/j.ibiod.2009.05.005 (DOI)
Projects
Microbial treatment of wastewater from textile industries using microorganisms growing on plant waste materials
Available from: 2009-12-07 Created: 2009-12-07 Last updated: 2017-12-12Bibliographically approved
2. Biodegradation of azo and anthraquinone dyes in continuous systems
Open this publication in new window or tab >>Biodegradation of azo and anthraquinone dyes in continuous systems
2011 (English)In: International Biodeterioration & Biodegradation, ISSN 0964-8305, E-ISSN 1879-0208, Vol. 65, no 1, 227-237 p.Article in journal (Refereed) Published
Abstract [en]

The purpose is to develop a complete microbiological model system for the treatment of wastewater

from textile mills in developing countries. Arti

fi

cial wastewater was treated by microorganisms growing

on wood shavings from Norway spruce during unsterile conditions. The microorganisms were inoculated

from forest residues. Mixtures of the azo dyes Reactive Black 5 and Reactive Red 2 were degraded in

batch as well as continuous experiments. Reactive Red 2 mixed with the anthraquinone dye Reactive

Blue 4 was also treated in the continuous system. The system consisted of three reservoirs

 

 

e the fi

rst two

with an anaerobic environment and the third with an aerobic. The dye concentrations were 200 mg l

 

 

1

of

each dye in the continuous system and the retention time was approximately 4 days and 20 h per

reservoir. Samples from the process were analysed with spectrophotometer and LC/MS to monitor the

degradation process. 86-90% of the colour was removed after a treatment of 4 days and 23 h in the

continuous process. Two metabolites were found in the outlets of reactors one and two, but they were

degraded to below the detection limit in the aerobic reactor.

 

 

 

Place, publisher, year, edition, pages
Elsevier, 2011
Keyword
textile dye, industrial wastewater, lignocellulosic materia, native microflora fromforest residues
National Category
Industrial Biotechnology
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
urn:nbn:se:lnu:diva-10268 (URN)10.1016/j.ibiod.2010.11.006 (DOI)2-s2.0-78650678059 (Scopus ID)
Available from: 2011-01-20 Created: 2011-01-20 Last updated: 2017-12-11Bibliographically approved
3. Microbial diversity in a continuous system based on rice husks for biodegradation of the azo dyes Reactive Red 2 and Reactive Black 5
Open this publication in new window or tab >>Microbial diversity in a continuous system based on rice husks for biodegradation of the azo dyes Reactive Red 2 and Reactive Black 5
2013 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 130, 681-688 p.Article in journal (Refereed) Published
Abstract [en]

In the present study the degradation of two common azo dyes used in dye houses today, Reactive Black 5 and Reactive Red 2 was evaluated in biofilters. In two experiments, bioreactors performed over 80% decolorization at a hydraulic retention time of only 28.4 h with little production of metabolites. Molecular analyses showed a diverse and dynamic bacterial community composition in the bioreactors, including members of the Bacteroidetes, Acinetobacter (Gammaproteobacteria) and Clostridium (Firmicutes) that possess the capacity to reduce azo dyes. Collectively, the results indicate that the development of mixed bacterial communities from natural biomaterials contributes to an efficient and robust degradation performance in bioreactors even at high concentration of dyes.

Place, publisher, year, edition, pages
Elsevier, 2013
Keyword
biodegradation, textile dyes, azodyes, denaturing gradient gel electrophoresis (DGGE)
National Category
Environmental Biotechnology
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
urn:nbn:se:lnu:diva-22899 (URN)10.1016/j.biortech.2012.12.097 (DOI)000316032300091 ()2-s2.0-84872408869 (Scopus ID)
Projects
decolorization, industrial wastewater, lignocellulosic material, indigenous 27 decolorizers, l
Available from: 2012-12-14 Created: 2012-12-14 Last updated: 2017-12-06Bibliographically approved
4. Treatment of Azo Dyes in Textile Industry Wastewater by Biological and/or Chemical Methods
Open this publication in new window or tab >>Treatment of Azo Dyes in Textile Industry Wastewater by Biological and/or Chemical Methods
Show others...
2011 (English)In: Separation and Purification Technology, ISSN 1383-5866, E-ISSN 1873-3794, Vol. 79, no 1, 26-33 p.Article in journal (Refereed) Published
Keyword
anaerobic microbial treatment, catalytic wet peroxide oxidation, azo dyes, textile industry wastewater
National Category
Engineering and Technology
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
urn:nbn:se:lnu:diva-16598 (URN)10.1016/j.seppur.2011.03.007 (DOI)2-s2.0-79955579603 (Scopus ID)
Available from: 2012-01-04 Created: 2012-01-04 Last updated: 2017-12-08Bibliographically approved
5. Biotreatment of actual textile wastewater in a continuous biofilter and the associated bacterial and fungal microflora.
Open this publication in new window or tab >>Biotreatment of actual textile wastewater in a continuous biofilter and the associated bacterial and fungal microflora.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

Textile processes use many different chemicals, most of which ends up in wastewater. Coloring of clothes is a particularly troublesome process since both azo and anthraquinone dyes are recalcitrant to degradation, causing environmental concerns. Hence, there is a great need to investigate and develop safe and applicable systems to the water demanding industry, such as textile mills in developing countries.

In the present study biodegradation of actual textile wastewater (containing azo and anthraquinone dyes) was evaluated in biofilters. Indigenous decolourants from rice husks were used in bioreactors and the degradation was analyzed with spectrophotometer and liquid chromatography coupled with mass spectrometry (LC/MS/MS) to monitor metabolites, especially in the form of aromatic amines. Chemical characteristics of the water were and bacterial and fungal community composition was monitored by denaturing gradient gel glectrophoresis (DGGE) analysis and subsequent sequencing of the 16S rRNA and ITS gene fragments.

The indigenous microflora consistently performed over 90% decolorization at a hydraulic retention time of 67 h. The molecular fingerprinting revealed the presence of bacteria such as Clostridium, Pseudomonadales, Xenophilus, Paenibacillus, Acinetobacter and Sphingomonas, all known to carry genes for azoreductases.  Furthermore, results showed that fungi were present in the biofilter, and were predominant in the aerobic reactors.

Collectively, these results indicate that the developed biofilter with rice husks support a mixed microbial community of both bacteria and fungi, with key features contributing to an efficient and reliable degradation performance of actual textile wastewater.

National Category
Engineering and Technology Environmental Engineering Water Treatment
Research subject
Environmental Science, Environmental technology
Identifiers
urn:nbn:se:lnu:diva-23506 (URN)
Available from: 2013-01-17 Created: 2013-01-17 Last updated: 2017-01-13Bibliographically approved

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