<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Synthetic dyes are extensively used in various industries like textile and food industry and are responsible for generation of colored and toxic wastewater. The aim of study was to evaluate decolorization efficiency of White Rot Fungi <italic>P.ostreatus</italic> (strain BWPH) for dyes belonging to different classes: Anthanthrone Red (anthraquinone dye) and Disazo Red (azo dye) having concentration of 0.08g/l. The <italic>Daphnia magna</italic> immobilization test was performed to check zoo toxicity of samples during and after treatment. The result show that maximum decolorization efficiency achieved for Anthanthrone Red and Disazo Red dye after 168h was 94.31% and 73.13% respectively. The zoo toxicity test reflects that the pure dyes were much less toxic to <italic>D.magna</italic> at higher concentration. In contrast, the post process samples were more toxic to organism. It reflected production of toxic metabolites because of enzymatic degradation/biotransformation of dye. For anthraquinone dye, post process sample of 0.25 h was less toxic as compared to 168 h sample. Toxicity Unit was 23.52(class IV), and 2.61(class III) respectively for Anthanthrone Red and Disazo Red post process sample. The conducted research showed high potential of BWPH strain for decolorization dyes belonging to different classes. But the mycelium produces toxic substances during the decolorization process. It may be related to the biodegradation of these substances to toxic metabolites. Further studies have indicated to optimize the process of decolorization.</p>
</abstract>

Synthetic dyes are extensively used in various industries like textile and food industry and are responsible for generation of colored and toxic wastewater. The aim of study was to evaluate decolorization efficiency of White Rot Fungi P.ostreatus (strain BWPH) for dyes belonging to different classes: Anthanthrone Red (anthraquinone dye) and Disazo Red (azo dye) having concentration of 0.08g/l. The Daphnia magna immobilization test was performed to check zoo toxicity of samples during and after treatment. The result show that maximum decolorization efficiency achieved for Anthanthrone Red and Disazo Red dye after 168h was 94.31% and 73.13% respectively. The zoo toxicity test reflects that the pure dyes were much less toxic to D.magna at higher concentration. In contrast, the post process samples were more toxic to organism. It reflected production of toxic metabolites because of enzymatic degradation/biotransformation of dye. For anthraquinone dye, post process sample of 0.25 h was less toxic as compared to 168 h sample. Toxicity Unit was 23.52(class IV), and 2.61(class III) respectively for Anthanthrone Red and Disazo Red post process sample. The conducted research showed high potential of BWPH strain for decolorization dyes belonging to different classes. But the mycelium produces toxic substances during the decolorization process. It may be related to the biodegradation of these substances to toxic metabolites. Further studies have indicated to optimize the process of decolorization.

Decolorization of Two Dyes Using White Rot Fungus <italic>P. ostreatus</italic> (BWPH) Strain and Evaluation of Zootoxicity of Post Process Samples

Department of Environmental Biotechnology, Faculty of Energy and Environmental Engineering

Department of Air Protection, Faculty of Energy and Environmental Engineering

Architecture, Civil Engineering, Environment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Decolorization of Two Dyes Using White Rot Fungus  (BWPH) Strain and Evaluation of Zootoxicity of Post Process Samples

Synthetic dyes are extensively used in various industries like textile and food industry and are responsible for generation of colored and toxic wastewater....

Toxicity Unit (TUa)	Class	Toxicity
<0.4	Class I	no acute toxicity
0.4 <TU <1	Class II	low acute toxicity
1 <TU <10	Class III	acute toxicity
10 <TU <100	Class IV	high acute toxicity
TU> 100	Class V	very high acute toxicity

Fungal Culture	Dye	Sample Description	Toxicity class (TUa)
P.ostreatus	Anthanth rone Red	Pure Dye	Non-Toxic
		0.25 h post process sample	IV (10.67)
		168 h post process sample	IV (23.52)
P.ostreatus	Disazo Red	Pure Dye	Non-Toxic
		0.25 h post process sample	III (2.67)
		168 h post process sample	III (2.61)

Decolorization of Two Dyes Using White Rot Fungus P. ostreatus (BWPH) Strain and Evaluation of Zootoxicity of Post Process Samples

Publicado en línea: 28 ene 2023

Páginas: 87 - 94

Recibido: 30 mar 2022

Aceptado: 01 ago 2022

DOI: https://doi.org/10.2478/acee-2022-0033

Palabras clave
Anthraquinone dye, Azo dye, Decolorization, Zoo toxicity

© 2022 Ruchi Upadhyay et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Figure 2

Figure 3

Persoone Toxicity Classes

Zoo-toxicity of Pure dye and Post process sample classified according to Persoone Toxicity Classes

Decolorization of Two Dyes Using White Rot Fungus P. ostreatus (BWPH) Strain and Evaluation of Zootoxicity of Post Process Samples

Publicado en línea: 28 ene 2023

Páginas: 87 - 94

Recibido: 30 mar 2022

Aceptado: 01 ago 2022

DOI: https://doi.org/10.2478/acee-2022-0033

Palabras claveAnthraquinone dye, Azo dye, Decolorization, Zoo toxicity

© 2022 Ruchi Upadhyay et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Figure 2

Figure 3

Persoone Toxicity Classes

Zoo-toxicity of Pure dye and Post process sample classified according to Persoone Toxicity Classes

Palabras clave
Anthraquinone dye, Azo dye, Decolorization, Zoo toxicity