Current Biotechnology

Pabulo Henrique Rampelotto  
Center of Biotechnology and PPGBCM
Federal University of Rio Grande do Sul
Porto Alegre, RS
Brazil

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Enzymatic Treatment of Petrochemical Wastewater Containing 2- Naphthalene Sulfonated Polymers by Pleurotus ostreatus

Author(s): Laura Palli, Antonella Gullotto, Silvia Tilli, Andrea Scozzafava, Donatella Caniani, Riccardo Gori.

Graphical Abstract:


Abstract:

Pleurotus ostreatus, using glucose as carbon source, is able to depolymerize a mixture of 2- naphthalene sulfonic acid polymers (NSAP), contained in a real petrochemical wastewater. On the contrary, its extracellular crude extracts, rich in laccases, are ineffective on NSAP degradation. Purified laccases and fungal extracellular extracts are able to depolymerize NSAP only in presence of specific synthetic or natural mediators. When P. ostreatus is grown on straw, the extracellular extracts are able to degrade the polymers, because they contain both high amounts of laccases and natural mediators. Because of the negligible cost of the straw this process appears very promising for enzymatic bioremediation of wastewater from rubber industry.

Keywords: cytP450, laccase, lignocellulosic materials, petrochemical wastewater, redox mediators, white-rot fungi.

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Article Details

VOLUME: 4
ISSUE: 2
Year: 2015
Page: [149 - 156]
Pages: 8
DOI: 10.2174/221155010402150730165528
Price: $58