Biodegradation of Azo Dyes

Session

Agriculture, Food Science and Technology

Description

Synthetic dyes are widely used in textile, dyeing, paper, printing, color photography, pharmaceutical, food, cosmetics, and other industries. Azo dyes represent about one-half of all the dyes in common use and are employed as coloring agents in the textile, food, and pharmaceutical industries. Although these are not toxic, but after released into the aquatic environments, they can be converted into carcinogenic amines. Chemical and physical methods including adsorption, coagulation-flocculation, advanced oxidation and electrochemical methods are very efficient in color removal. These methods are quite expensive and have operational problems; high sludge formation, regeneration requirement and cost of adsorbent make adsorption an unattractive method for decolorization purposes. Nowadays the attention is focused on the treatment of azo dyes with biological methods due to these methods are ecofriendly and cost-effectiveness. Azo dye biodegradation by several mixed and monoculture bacterial cultures, aerobic and anaerobic culture, white root fungi, algae, plants have been reported.

Keywords:

Azo dyes, Bacteria, Fungi, aromatic amines, monoculture

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-550-50-5

Location

UBT Kampus, Lipjan

Start Date

29-10-2022 12:00 AM

End Date

30-10-2022 12:00 AM

DOI

10.33107/ubt-ic.2022.336

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Oct 29th, 12:00 AM Oct 30th, 12:00 AM

Biodegradation of Azo Dyes

UBT Kampus, Lipjan

Synthetic dyes are widely used in textile, dyeing, paper, printing, color photography, pharmaceutical, food, cosmetics, and other industries. Azo dyes represent about one-half of all the dyes in common use and are employed as coloring agents in the textile, food, and pharmaceutical industries. Although these are not toxic, but after released into the aquatic environments, they can be converted into carcinogenic amines. Chemical and physical methods including adsorption, coagulation-flocculation, advanced oxidation and electrochemical methods are very efficient in color removal. These methods are quite expensive and have operational problems; high sludge formation, regeneration requirement and cost of adsorbent make adsorption an unattractive method for decolorization purposes. Nowadays the attention is focused on the treatment of azo dyes with biological methods due to these methods are ecofriendly and cost-effectiveness. Azo dye biodegradation by several mixed and monoculture bacterial cultures, aerobic and anaerobic culture, white root fungi, algae, plants have been reported.