Inhibition Kinetics of Phenolic Compounds in Aerobic Degradation of Organic Wastewaters
Abstract:This study proposed a kinetic model for the aerobic degradation of high strength organic wastewaters with high concentrations of phenolic compounds. The model was based on the conventional Monod kinetic equation incorporating phenols' inhibition. Furthermore, a methodology for determining biokinetic constants was proposed. Olive-mill wastewater (OMWW) was used for the case study. The model and proposed methodology were fitted on the experimental data and it was proved that the aerobic degradation of OMWW was described satisfactorily. The following kinetic constants were determined: maximum specific substrate removal rate, 1.35 h −1; minimum microorganisms decay rate, 0.01 h −1; inhibition coefficient of phenolic compounds, 373 mg L −1; half-saturation concentration in carbon units, 1004 mg L −1; and decay acceleration coefficient of phenolic compounds, 231 mg L −1. Finally, the biomass yield coefficient was found to be equal to 0.36. Thus, it was determined that the proposed methodology would be a useful tool for determining biokinetic constants of similar substrates.
Document Type: Research Article
Publication date: 2009-06-01
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- Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year. Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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