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Title of Thesis

Accelerated Degradation Of Selected Azo Dyes By Some Microbial Strains

Author(s)

Sofia Nosheen

Institute/University/Department Details
Department Of Chemistry & Biochemistry / University Of Agriculture, Faisalabad
Session
2010
Subject
Chemistry
Number of Pages
221
Keywords (Extracted from title, table of contents and abstract of thesis)
Accelerated, Decolorization, Cometabolic, Selected, Toxic, Microbial, Biodegradation, Strains, Dyes, Hydroquinone, Azo

Abstract
This study involves aerobic decolorization of three reactive azo dyes: REACTIVE ORANGE 16, REACTIVE BRILLIANT RED K2BP AND REACTIVE BLACK B by newly isolated microbial strains. After optimization of reaction conditions bacterial strain B1 gave 73%, 74% and 84% decolorization, Bacterial strain B2 gave 85%, 77% and 78% decolorization while fungal strain gave 90.5%, 94% and 90.4% decolorization of REACTIVE BLACK B, REACTIVE ORANGE 16 and REACTIVE BRILLIANT RED K2BP respectively. No cometabolic role of any organic substrate was found. Color removal rates went on decreasing by addition of heavy metals. Cobalt and Nickel showed greater inhibitions on % decoloristion than zinc copper and iron there was about 50% color reduction by adding 6mg ml-1 of all heavy metals. Hydroquinone was proved to be a good redox mediator enhancing decolorization rate but only at lower concentrations.Biodegradation analysis was monitored by UV-VIS SPECTROSCOPY, HPTLC and GC/MS. None of the formed dye metabolite was from carcinogenic, toxic banned amines.

Download Full Thesis
3,517 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 CONTENTS

 

6
96 KB
2

1

INTRODUCTION
 
13
120 KB
3 2 REVIEW OF LITERATURE

 

19
1,637 KB
4 3 MATERIALS AND METHODS

 

54
438 KB
5

4

RESULTS AND DISCUSSION

 

68
1,585 KB
6

5

SUMMARY

 

194
97 KB
7

6

LITERATURE CITED

 

196
185 KB