Bacterial Decolorization and Degradation of Azo Dyes

Pandey, Anoop Kumar; Singh, Poonam; Iyengar, Leela

doi:10.1007/978-3-642-23789-8_4

Cited by 105 publications

(12 citation statements)

References 205 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dyes are classified by (i) chromophore groups in their chemical structures as azo dyes, anthraquinone dyes and phthalocyanine dyes etc. and (ii) their usage or application method as disperse dyes for polyester and reactive dyes for cotton (Singh et al, 2012). Azo (monoazo, diazo, triazo and polyazo), anthraquinone, triarylmethane and phthalocynine dyes are main groups of dyes.…”

Section: Introductionmentioning

confidence: 99%

Bio-removal of Azo Dyes: A Review

Singh

2017

Int J Appl Sci Biotechnol

133

View full text Add to dashboard Cite

Synthetic dyes are widely used in textile, paper, food, cosmetics and pharmaceutical industries with the textile industry as the largest consumer. Among all the available synthetic dyes, azo dyes are the largest group of dyes used in textile industry. Textile dyeing and finishing processes generate a large amount of dye containing wastewater which is one of the main sources of water pollution problems worldwide. Several physico-chemical methods have been applied to the treatment of textile wastewater but these methods have many limitations due to high cost, low efficiency and secondary pollution problems. As an alternative to physico-chemical methods, biological methods comprise bacteria, fungi, yeast, algae and plants and their enzymes which received increasing interest due to their cost effectiveness and eco-friendly nature. Decolorization of azo dyes by biological processes may take place either by biosorption or biodegradation. A variety of reductive and oxidative enzymes may also be involved in the degradation of dyes. This review provides an overview of decolorization and degradation of azo dyes by biological processes and establishes the fact that these microbial and plant cells are significantly effective biological weapon against the toxic azo dyes.

show abstract

Section: Introductionmentioning

confidence: 99%

Bio-removal of Azo Dyes: A Review

Singh

2017

Int J Appl Sci Biotechnol

133

View full text Add to dashboard Cite

show abstract

“…The major chromophoric groups include -C‚C-, -C‚O, -C‚N-, -NO 2, -N‚N-and quinonoid rings while auxochromic groups include -COOH, -OH, -SO 3 H, and -NH 2 etc. (Carmen and Daniela, 2012;Singh et al, 2012).…”

Section: Dyes and Their Classificationmentioning

confidence: 98%

“…and (ii) their usage or application method as disperse dyes for polyester and reactive dyes for cotton (Hunger, 2003;Singh et al, 2012), whereas based on their dissociation in aqueous solution dyes can be acidic, basic (cationic), direct reactive (anionic) and disperse/nonionic dyes (Campos et al, 2001). Among all these classes, azo aromatic ones are most pervasive in industry all over the globe (Zille et al, 2005).…”

Section: Dyes and Their Classificationmentioning

confidence: 98%

“…Conventionally, numerous physical and chemical methods including adsorption, ultra-filtration, coagulation, flocculation, ozonation, photocatalytic oxidation, advanced oxidation processes, fenton process, chemical and electrochemical coagulation were applied for removal of color from wastewater (Kapdan and Kargi, 2002;Sandhaya et al, 2005;Can˜izares et al, 2006;Abo-Farah, 2010, Singh andArora, 2011;Singh et al, 2012). All these methods are not sufficient to alleviate dye related hazards, additionally, their applications are precluded due to higher energy requirements and costs, processing efficiencies, operational problems, generation of sludge or wastes in huge quantities and its safe disposal, thus can serve as a powerful means of generating secondary pollutants (Kapdan and Kargi, 2002;Sandhaya et al, 2005;Singh et al, 2012).…”

Section: Conventional Technologies For Treatment Of Dyestuffsmentioning

confidence: 99%

See 1 more Smart Citation

Phytoremediation: Potential flora for synthetic dyestuff metabolism

Tahir

Yasmin

Khan

2016

Journal of King Saud University - Science

102

View full text Add to dashboard Cite

Dumping of dye-laden effluents into different environmental compartments adversely affects equilibrium and integrity of ecological systems. Being genotoxic, mutagenic and carcinogenic these dyes are quite damaging to health of biota (either aquatic or terrestrial). Many of these dyes are resistant to degradation and remediation under natural conditions and through conventional treatment methods. This situation has necessitated the development of effective and efficient wastewater treatment strategies without further stressing the environment and endangering other life forms. To date many biological systems including microorganisms and plants have been assessed for metabolism of dyestuffs. Phytoremediation catalyzed by natural solar driven pumps (green plants) and their associated metabolic processes has emerged as a comparatively new approach and has proven to be one of the most effective environmental friendly strategies for removal, detoxification and decolorization of dyes. Hence, this review quotes the literature of applied aspects of various plant species and their inherent metabolic as well as extractive potentials which enable them to effectively deal with various coloring agents. ª 2015 Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

show abstract

“…Usual chromophores are -C = C-, -C = N-, -C = O, -N = N-, -NO 2 and quinonoid rings. Examples of auxochromes are -NH 2 , -SO 3 H, -COOH and -OH (Singh et al, 2012). Dyes may be classified according to types of chromophores in their structure or as per the method of application.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of Methyl Red by Staphylococcus aureus Isolated from Waste Dump Site

Abioye¹,

Iroegu²,

Aransiola³

2015

J. of Environmental Science and Technology

View full text Add to dashboard Cite

The release of azo dyes especially methyl red into the environment is of great concern due to coloration of natural water, toxicity, mutagenicity and their biotransformation product. Economical and bio-friendly approaches are needed to remediate dye contaminated waste water from various industries. In this study, Staphylococcus aureus capable of degrading azo dye was isolated from waste dump site. The isolate was studied for their ability to decolorize Methyl Red (MR) using UV spectrophotometer at 430 nm at 3 different concentrations (250, 500 and 750 mL) under aerobic condition for the period of 12 days. The 62, 58 and 50% methyl red decolorizations were recorded in 750, 500 and 250 mL dilution respectively at the end of 12 day. The results of this study suggest the potential of Staphylococcus aureus for the treatment of waste water containing methyl red.

show abstract

Bacterial Decolorization and Degradation of Azo Dyes

Cited by 105 publications

References 205 publications

Bio-removal of Azo Dyes: A Review

Bio-removal of Azo Dyes: A Review

Phytoremediation: Potential flora for synthetic dyestuff metabolism

Biodegradation of Methyl Red by Staphylococcus aureus Isolated from Waste Dump Site

Contact Info

Product

Resources

About