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Olive Oil Mill Waste Waters Decoloration and Detoxification in a Bioreactor by the White Rot Fungus Phanerochaete f lavido‐alba
Author(s) -
Blánquez P.,
Caminal G.,
Sarrà M.,
Vicent M. T.,
Gabarrell X.
Publication year - 2002
Publication title -
biotechnology progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.572
H-Index - 129
eISSN - 1520-6033
pISSN - 8756-7938
DOI - 10.1021/bp020021s
Subject(s) - phanerochaete , bioreactor , laccase , pulp and paper industry , wastewater , lignin , lignin peroxidase , manganese peroxidase , peroxidase , effluent , chemistry , erlenmeyer flask , botany , food science , environmental science , biology , environmental engineering , enzyme , chromatography , organic chemistry , engineering
Olive oil mill wastewater (OMW) is produced as waste in olive oil extraction. With the purpose of treating this highly polluting waste, a number of experiments were conducted in a laboratory‐scale bioreactor with the white rot fungus Phanerochaete flavido‐alba ( P. flavido‐alba ). It is known that this fungus is capable of decolorizing OMW in static or semistatic cultures at Erlenmeyer scale and at 30 °C. The objective of this work was to prove that P. flavido‐alba could decolorize OMW in submerged cultures and that it is capable of reducing OMW toxicity at room temperature (25 °C) and in a laboratory‐scale bioreactor. In the experiments conducted, manganese peroxidase (MnP) and laccase enzymes were detected; however, unlike other studies, lignin peroxidase was not found to be present. Decoloration obtained after treatment was 70%. The reduction of aromatic compounds obtained was 51%, and the toxicity of the culture medium was reduced by up to 70%. We can therefore state that P. flavido‐alba is capable of reducing important environmental parameters of industrial effluents and that prospects are positive for the use of this process at a larger scale, even when working at room temperature.