Response surface methodology for optimization of culture conditions for dye decolorization by a fungus, Aspergillus niger HM11 isolated from dye affected soil
Discharge of wastewater from textile dyeing industries has been a problem in terms of pollution and treatment of these waters is a great task. Keeping this in mind, the aim of our current research is to study the effect of various bioprocess variables on decolorization of an azo dye, Congo red, by a...
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| Published in: | Iranian journal of microbiology Vol. 2; no. 4; pp. 213 - 222 |
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| Format: | Journal Article |
| Language: | English |
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Tehran University of Medical Sciences
01-12-2010
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| Abstract | Discharge of wastewater from textile dyeing industries has been a problem in terms of pollution and treatment of these waters is a great task. Keeping this in mind, the aim of our current research is to study the effect of various bioprocess variables on decolorization of an azo dye, Congo red, by a fungal isolate, Aspergillus niger HM11.
CENTRAL COMPOSITE DESIGN (CCD) AND RESPONSE SURFACE METHODOLOGY (RSM) HAVE BEEN APPLIED TO DESIGN EXPERIMENTS TO EVALUATE THE INTERACTIVE EFFECTS OF THE OPERATING VARIABLES: on the decolorization of Congo red. A total of 30 experiments were conducted in the present study and a regression coefficient between the variables was generated.
The RSM indicated that pH 6.0, 150 rpm agitation, incubation time of 36 hrs and a glucose concentration of 1.0% were optimal for maximum decolorization of Congo red and the response indicated excellent evaluation of experimental data.
From this study, it is very obvious that the fungal isolate, Aspergillus niger HM11 can be used as a promising microbial strain for decolorization of textile dyeing effluent containing similar dyes. |
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| AbstractList | Background and Objectives: Discharge of wastewater from textile dyeing industries has been a problem in terms of pollution and treatment of these waters is a great task. Keeping this in mind, the aim of our current research is to study the effect of various bioprocess variables on decolorization of an azo dye, Congo red, by a fungal isolate, Aspergillus niger HM11. Materials and Methods: Central composite design (CCD) and response surface methodology (RSM) have been applied to design experiments to evaluate the interactive effects of the operating variables: on the decolorization of Congo red. A total of 30 experiments were conducted in the present study and a regression coefficient between the variables was generated. Results: The RSM indicated that pH 6.0, 150 rpm agitation, incubation time of 36 hrs and a glucose concentration of 1.0% were optimal for maximum decolorization of Congo red and the response indicated excellent evaluation of experimental data. Conclusion: From this study, it is very obvious that the fungal isolate, Aspergillus niger HM11 can be used as a promising microbial strain for decolorization of textile dyeing effluent containing similar dyes. Discharge of wastewater from textile dyeing industries has been a problem in terms of pollution and treatment of these waters is a great task. Keeping this in mind, the aim of our current research is to study the effect of various bioprocess variables on decolorization of an azo dye, Congo red, by a fungal isolate, Aspergillus niger HM11. CENTRAL COMPOSITE DESIGN (CCD) AND RESPONSE SURFACE METHODOLOGY (RSM) HAVE BEEN APPLIED TO DESIGN EXPERIMENTS TO EVALUATE THE INTERACTIVE EFFECTS OF THE OPERATING VARIABLES: on the decolorization of Congo red. A total of 30 experiments were conducted in the present study and a regression coefficient between the variables was generated. The RSM indicated that pH 6.0, 150 rpm agitation, incubation time of 36 hrs and a glucose concentration of 1.0% were optimal for maximum decolorization of Congo red and the response indicated excellent evaluation of experimental data. From this study, it is very obvious that the fungal isolate, Aspergillus niger HM11 can be used as a promising microbial strain for decolorization of textile dyeing effluent containing similar dyes. BACKGROUND AND OBJECTIVESDischarge of wastewater from textile dyeing industries has been a problem in terms of pollution and treatment of these waters is a great task. Keeping this in mind, the aim of our current research is to study the effect of various bioprocess variables on decolorization of an azo dye, Congo red, by a fungal isolate, Aspergillus niger HM11. MATERIALS AND METHODSCENTRAL COMPOSITE DESIGN (CCD) AND RESPONSE SURFACE METHODOLOGY (RSM) HAVE BEEN APPLIED TO DESIGN EXPERIMENTS TO EVALUATE THE INTERACTIVE EFFECTS OF THE OPERATING VARIABLES: on the decolorization of Congo red. A total of 30 experiments were conducted in the present study and a regression coefficient between the variables was generated. RESULTSThe RSM indicated that pH 6.0, 150 rpm agitation, incubation time of 36 hrs and a glucose concentration of 1.0% were optimal for maximum decolorization of Congo red and the response indicated excellent evaluation of experimental data. CONCLUSIONFrom this study, it is very obvious that the fungal isolate, Aspergillus niger HM11 can be used as a promising microbial strain for decolorization of textile dyeing effluent containing similar dyes. |
| Author | Nanthakumar, K Shanthi, K Lakshmanaperumalsamy, P Karthikeyan, K |
| AuthorAffiliation | 1 Gujarat Institute of Desert Ecology, Mundra Road, Bhuj-Kachchh -370001, Gujarat, India 4 Karpagam University, Eachanari Post, Coimbatore-641 021, Tamil Nadu, India 3 Department of Env. Sciences, P.S.G.C.A.S, Coimbatore-641 014, Tamil Nadu, India 2 Department of Env. Sciences, Bharathiar University, Coimbatore-641 046, Tamil Nadu, India |
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| Title | Response surface methodology for optimization of culture conditions for dye decolorization by a fungus, Aspergillus niger HM11 isolated from dye affected soil |
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