Aerobic biodegradation and detoxification of wastewaters from the olive oil industry |
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| Affiliation: | 1. Section for Transfusion Medicine, Capital Region Blood Bank, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, DK-2100 Copenhagen, Denmark;2. The Center for Translational Injury Research (CeTIR), University of Texas Health Science Center, Houston, TX, United States;3. The Department of Surgery, University of Texas Health Science Center, Houston, TX, United States;4. Department of Anaesthesiology, Centre of Head and Orthopaedics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark;5. Skåne University Hospital, Lund, Skåne, Sweden;1. Department of Biology, Rooseveltovtrg 6, 10000, University of Zagreb, Croatia;2. Marine Explorers Society – 20000 leagues, Put Bokanjca 26A, 23000 Zadar, Croatia;3. Bioscience Research Center, Via Aurelia Vecchia 32, 58015 Orbetello, Italy;1. School of Biological Sciences, Royal Holloway University of London, Egham, Surrey TW20 0EX, UK;2. School of Health and Life Sciences, University of the West of Scotland, Paisley, PA1 2BE, UK;3. Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK |
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| Abstract: | Growth and polyphenol biodegradation by three microorganisms namely Geotrichum sp., Aspergillus sp. and Candida tropicalis were studied on olive mill wastewater (OMW). These three microorganisms were selected for their tolerance to the polyphenols. The biodegradation process of OMW was investigated in batch regime by conducting experiments where the initial concentration of chemical oxygen demand (COD) was varied. Furthermore, some tests were performed to determine the most important nutrients necessary for aerobic degradation of OMW. Average COD removals were 55.0%, 52.5% and 62.8% in wastewaters fermented with Geotrichum sp., Aspergillus sp. and C. tropicalis, respectively. The maximum removal of polyphenols was 46.6% (Geotrichum sp.), 44.3% (Aspergillus sp.) and 51.7% (C. tropicalis). In addition, significant decolorization was evident. |
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