Panus tigrinus efficiently removes phenols, color and organic load from olive-mill wastewater.
This study was aimed at assessing the potential of the white-rot fungus Panus tigrinus CBS 577.79 in removing organic load, color and toxic phenols from agro-industrial effluent olive-mill wastewater (OMW). The influence of wastewater composition on P. tigrinus degradative capability was investigated in shaken cultures using two different OMWs. The initial soluble COD of 85,000 mg l(-1) led to a delay in removal of color, organic load and phenol by the fungus. This was associated with delayed onset of laccase and Mn-dependent peroxidase. On the other hand, P. tigrinus, when grown on OMW with an initial soluble COD content of 43,000 mg l(-1), promptly and efficiently removed the aforementioned components. Chromatographic analyses showed that 4-hydroxy-substituted simple phenols were predominantly removed. The polymeric aromatic fraction underwent simultaneous polymerization and depolymerization. This study is a contribution to the understanding of the degradative specificity of P. tigrinus on OMW aromatic components and provides good indications for possible future applications of the fungus.
Dipartimento di Agrobiologia e Agrochimica, University of Tuscia, Via San Camillo de Lellis snc, 01100 Viterbo, Italy.
Alessandro
A
D'Annibale
Marika
M
Ricci
Daniele
D
Quaratino
Federico
F
Federici
Massimiliano
M
Fenice
D001487:Basidiomycota / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors; D002845:Chromatography; D019649:Food Industry; D000069463:Olive Oil; D010636:Phenols / Q000378:metabolism*; D010938:Plant Oils / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000378:metabolism
D000069463:Olive Oil; D010636:Phenols; D010938:Plant Oils; D014874:Water Pollutants, Chemical