Biodegradation kinetics of 3-chlorophenol (3-CP) were studied in two identical lab scale sequencing batch reactors (SBR) fed with the compound as the sole energy and carbon source and operated at different filling time (1 h for SBR1 and 2 h for SBR2). High removal efficiency was always obtained in both SBRs in the range of feed concentration of 300-960 mg L(-1). Increased feed load to 1,200 mg L(-1) 3-CP could also be removed in SBR1 despite the presence of inhibition, whereas determined failure of SBR2. Long filling time and high biomass concentration were shown to have beneficial effect on process kinetics since they allowed to avoid substrate concentration peaks at the end of the fill phase. However, longer filling time (in the present case higher than 1 h) did not allow to select and enrich robust microbial population. The Haldane equation well fitted the kinetic test data measured in the presence of inhibition, i.e., at 960 and 1,200 mg L(-1) 3-CP in SBR1.

3-Chlorophenol Biodegradation in a Sequencing Batch Reactor: Kinetic Study and Effect of the Filling Time / Chiavola, Agostina; Renato, Baciocchi; Federico, Barducci. - In: WATER AIR AND SOIL POLLUTION. - ISSN 0049-6979. - STAMPA. - 212:1-4(2010), pp. 219-229. [10.1007/s11270-010-0334-z]

3-Chlorophenol Biodegradation in a Sequencing Batch Reactor: Kinetic Study and Effect of the Filling Time

CHIAVOLA, Agostina
;
2010

Abstract

Biodegradation kinetics of 3-chlorophenol (3-CP) were studied in two identical lab scale sequencing batch reactors (SBR) fed with the compound as the sole energy and carbon source and operated at different filling time (1 h for SBR1 and 2 h for SBR2). High removal efficiency was always obtained in both SBRs in the range of feed concentration of 300-960 mg L(-1). Increased feed load to 1,200 mg L(-1) 3-CP could also be removed in SBR1 despite the presence of inhibition, whereas determined failure of SBR2. Long filling time and high biomass concentration were shown to have beneficial effect on process kinetics since they allowed to avoid substrate concentration peaks at the end of the fill phase. However, longer filling time (in the present case higher than 1 h) did not allow to select and enrich robust microbial population. The Haldane equation well fitted the kinetic test data measured in the presence of inhibition, i.e., at 960 and 1,200 mg L(-1) 3-CP in SBR1.
2010
3-chlorophenol; filling time; haldane equation; kinetics; sequencing batch reactor
01 Pubblicazione su rivista::01a Articolo in rivista
3-Chlorophenol Biodegradation in a Sequencing Batch Reactor: Kinetic Study and Effect of the Filling Time / Chiavola, Agostina; Renato, Baciocchi; Federico, Barducci. - In: WATER AIR AND SOIL POLLUTION. - ISSN 0049-6979. - STAMPA. - 212:1-4(2010), pp. 219-229. [10.1007/s11270-010-0334-z]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/113907
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