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Synergistic degradation of 2-naphthol by Fusarium proliferatum and Bacillus subtilis in wastewater

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Abstract.
2-Naphthol, which originates widely from various industrial activities, is toxic and thus harmful to
human liver and kidney. A new compound biodegradation system was adopted to degrade 2-naphtholcontaminated
wastewater. Enzymatic response to 2-naphthol biodegradation in the aqueous phase was also studied. As a co-metabolic substrate, salicylic acid could induce the two microorganisms to produce a large amount of degradation enzymes for 2-naphthol. The key enzymes were confirmed as polyphenol oxidase (PPO) and catechol 2,3-dioxygenase (C23O). The degradation extent of 2-naphthol, determined by high performance liquid chromatography (HPLC), was enhanced by nearly 15% on the 6th day after the addition of the co-metabolic substrate. The results obtained thus clearly indicated that the co-metabolic process was the most important factor affecting the degradation of the target contaminant. The optimal concentration of 2-naphthol was 150mgL−1, and the optimal pH value was 7.0. The degradation extent of 2-naphthol was further enhanced by nearly 10% after the addition of Tween 80, which increased the bioavailability of 2-naphthol. In a practical treatment of industrialwastewater from medical manufacture, the synergistic degradation system resulted in a high degradation efficiency of 2-naphthol although its lag time was a little long in the initial stage.

Keywords:
2-Naphthol
Biodegradation
Enzyme
Response
Co-metabolism

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Informasi Detail

Judul Seri

Journal of Hazardous Materials

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Journal of Hazardous Materials 166 (2009) 33–38

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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