Premium
Toxic effect of coloured olive compounds on the anaerobic digestion of olive oil mill effluent in UASB‐like reactors
Author(s) -
Zouari Nabil,
Ellouz Radhouane
Publication year - 1996
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199608)66:4<414::aid-jctb516>3.0.co;2-#
Subject(s) - anaerobic digestion , effluent , olive oil , pulp and paper industry , anaerobic exercise , mill , chemistry , waste management , digestion (alchemy) , environmental science , bioreactor , environmental engineering , methane , biology , food science , chromatography , engineering , organic chemistry , physiology
Anaerobic sludge digestion of olive oil mill effluent (OOME) in Upflow Anaerobic Sludge Blanket (UASB) reactors was shown to be unstable as a result of both chemical and biological parameters. The study was complicated by the fact that Chemical Oxygen Demand (COD) was removed by growth and maintenance of active biomass and by adsorption in and on the sludge. Coloured compounds caused an inhibition effect on the anaerobic digestion of the wastewater. This inhibition, shown at low COD concentrations of diluted OOME, was due to accumulation of recalcitrant coloured compounds in the sludge, inducing irreversible inhibition of bacterial growth. Partial decolourization of OOME through resin (Duolite XAD 761) treatment reduced the toxic effect.