Bankole, O. Olusola and Bankole, P. Olusegun (2018) BIODECOLORIZATION OF AN AZO DYE, ERIOCHROME BLACK T BY PENICILLIUM CITRINUM. In: 52nd Annual Conference of Science Association of Nigeria (SAN), April 15th – 19th, 2018., Nigeria.

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Synthetic textile dyes are one of the most serious pollutants that contaminate steadily higher amounts of wastewater as industrial effluents. The dyes are highly recalcitrant owing to their chemical structure. Filamentous fungi possesses excellent biosorption capacity due to the secretion of non-selective extracellular enzymes. The aim of this study is to evaluate the biodecolorization efficiency of Penicillium citrinum on Ericochrome black T dye. Optimum decolorization (98%) was achieved at a concentration (10 mg L-1), temperature (35 °C), and pH 6 during 5 days optimization scale up studies. UV—Vis spectroscopy, HPLC and gas chromatography-mass spectrometry was used in analyzing the degraded products of the dye. The GCMS analysis revealed the production of three metabolites; naphthalen-1-ol, 2-nitronaphthalene and naphthalene after degradation of Eriochrome black T dye. A possible metabolic pathway for the degradation of Eriochrome black T dye by Penicillium citrinum was proposed. The phytotoxicity study revealed the nontoxic nature of the final metabolites. The detoxified status of the dye metabolites were confirmed with significant growth of plumule and radicle coupled with increase in germination percentage of Vigna uniguiculata and Triticum aestivum.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Q Science > QK Botany
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mr Taiwo Egbeyemi
Date Deposited: 11 May 2020 20:04
Last Modified: 11 May 2020 20:04

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