Toxicity and biodegradability of olive mill wastewaters in batch anaerobic digestion

Journal Article · Sun Nov 01 00:00:00 EST 1992 · Applied Biochemistry and Biotechnology; (United States)

DOI:https://doi.org/10.1007/BF02921667· OSTI ID:7047896

Hamdi, M ^[1]

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1. Centre de Biotechnologie, Sfax (Tunisia) Universite de Provence, Marseille (France)

The anaerobic biodegradability and toxicity of olive mill wastewaters (OMW) were studied in batch anaerobic digestion experiments. Anaerobic digestion of OMW or the supernatant of its centrifugation, the methane production was achieved at up to 5-15% (V/V) dilution corresponding to only 5-20 g/L COD. The washed suspended solids of OMW were toxic at up to 80 g/L COD; however, the kinetic of biodegradability of OMW or the supernatant was faster than for suspended solids, which are constituted mealy of cellulose and lignin. The darkly colored polyphenols induce the problem of biodegradation of OMW, whereas the long chain fatty acids (LCFA), tannins and simple phenolic compounds are responsible for its toxicity for methanogenic bacteria. 26 refs., 4 figs., 1 tab.

• OSTI ID: 7047896
• Journal Information: Applied Biochemistry and Biotechnology; (United States), Vol. 37:2; ISSN 0273-2289
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
METHANE
BIOCONVERSION
WASTE WATER
BIODEGRADATION
ANAEROBIC CONDITIONS
CARBOXYLIC ACIDS
CHEMICAL OXYGEN DEMAND
EXPERIMENTAL DATA
METHANOGENIC BACTERIA
OLIVES
PHENOLS
POLYPHENOLS
TANNIC ACID
TOXICITY
ALKANES
AROMATICS
BACTERIA
CHEMICAL REACTIONS
DATA
DECOMPOSITION
FOOD
FRUITS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
LIQUID WASTES
MICROORGANISMS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
WASTES
WATER
090900* - Biomass Fuels- Processing- (1990-)