The development of a novel strategy for the microbial treatment of acrylonitrile effluents |
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Authors: | J. M. Wyatt C. J. Knowles |
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Affiliation: | (1) Biological Laboratory, University of Kent, CT2 7NJ Canterbury, Kent, Great Britain;(2) Present address: Viridian Bioprocessing Limited, Thanet Way, CT5 3QT Whitstable, Kent, Great Britain |
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Abstract: | Effluent from the manufacture of acrylonitrile is difficult to biodegrade. It contains nine major organic components: acetic acid, acrylonitrile, acrylamide, acrylic acid, acrolein, cyanopyridine, fumaronitrile, succinonitrile, and maleimide. A range of bacteria have been isolated that can grow on, or convert all of the organic components of effluent from the manufacture of acrylonitrile. These bacteria can be used as the basis of a mixed culture system to treat the effluent. The bacteria were utilised in batch and continuous cultures to degrade a synthetic wastewater containing acrylonitrile, acrylamide, acrylic acid, cyanopyridine and succinonitrile. The mixed microbial population was adapted by varying the growth rate and switching from continuous to batch and back to continuous growth, to degrade these five compounds as well as acrolein, fumaronitrile and maleimide.Abbreviations BOD Biological Oxygen Demand - COD Chemical Oxygen Demand - TD Doubling Time - ppm parts per million - HPLC High Pressure Liquid Chromatography - GLC Gas Liquid Chromatography |
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Keywords: | acrylamide acrylic acid acrolein acrylonitrile acrylonitrile effluents allyl alcohol bacterial isolates on acrylonitrile acrylamide acrylic acid cyanopyridine succinonitrile 3-cyanopropenoic acid allyl alcohol biotransformation of acrolein biotransformation of fumaronitrile biotransformation of of maleimide cyanopyridine 3-cyanopropenoic acid fumaronitrile maleimide succinonitrile |
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