Benzoate removal by aerobic bioslimes

Holder, G. A.; Vaughan, G.

doi:10.1016/0043-1354(87)90009-1

Water Research

1987

DOI: 10.1016/0043-1354(87)90009-1

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Benzoate removal by aerobic bioslimes

G. A. Holder

G. Vaughan

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Cited by 3 publications

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“…and Vaughan (1987) to measure the concentration of benzoic acid. Samples were prepared by acidifying a 10 mL aliquot using 0.5 mL of 1 mol/L HCI (pH 2).…”

mentioning

confidence: 99%

Biodegradation of aromatic compounds in a self‐cycling fermenter (SCF)

Sarkis

Cooper

1994

Can J Chem Eng

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ABSTRACT. .The Self-Cycling Fermentation (SCF) techniql 1 e was applied to the biodegradation of several aromatic compounds by Pseudomonas putida and p"'j'eudolllomis fluorescell ..... The SCF technique was shown to be a useful research tool in aromatic biodegradation studies as weil as a potential pollution treatment method. Advantages of SCFs include stable and highly repeatable performance and almost complete substrate consumption. Biomass concentration.cycle time and the minimum dissolved oxygen level were monitored from cycle to cycle and the variation of these parameters during steady-state operation was less than 5(X,. The aromatic compounds used in this ~tudy were sodium benzoate, p-anisaldehyde and 4-methoxybenzylidine-4-n-butylaniline (MBBA). Consumptions of 93-100% were achieved for thesc compounds usingtheSCFtechnique. Consumption rates ofaromatic compounds wereshown to he considerably higher than in conventionaJ fermenters. Cycle time was found to he a usefuJ parameter forcomparing growth of ditrerent organisms on aromatic substrates. The cycle tirr.e was dependant on substrate concentration for p-anisaJdehyde. This dependence was shown to be due to the presence of an unidentified, inhibitory intermediate. .,

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“…and Vaughan (1987) to measure the concentration of benzoic acid. Samples were prepared by acidifying a 10 mL aliquot using 0.5 mL of 1 mol/L HCI (pH 2).…”

mentioning

confidence: 99%

Biodegradation of aromatic compounds in a self‐cycling fermenter (SCF)

Sarkis

Cooper

1994

Can J Chem Eng

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Modelling the consumption of dissolved contaminants by biofilm periphyton in open-channel flow

Lau

1990

Water Research

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Spatial Variability of In Situ Microbial Activity: Biotracer Tests

Sandrin¹,

Brusseau²,

Piatt³

et al. 2004

Groundwater

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Biotracer tests have been proposed as a means by which to characterize the in situ biodegradation potential for field-scale systems. In this study, field experiments were conducted at two sites to evaluate the utility of the biotracer method for characterizing the spatial variability of microbial activity. The first site is a mixed waste-contaminated surficial aquifer in Utah, and the second site is a chlorinated solvent-contaminated regional aquifer in Tucson, Arizona. Mass recovery of the biotracer decreased approximately linearly with increasing residence time for the Tucson site. Similar behavior was observed at the Utah site, except in the region adjacent to the injection zone, where percent recoveries were much lower than those predicted using a correlation determined using data collected downgradient of the injection zone. First-order biodegradation rate coefficients obtained from model calibration of the tracer data varied between 0.2 and 0.5/day for the Tucson site. For the Utah site, the values varied between 0.1 and 0.6/day downgradient of the injection wells, and between 0.7 and 2.6/day near the injection wells. Considering the large range over which biodegradation rate coefficients can vary, the rate coefficient exhibited relatively minimal spatial variability (factor of 2.5) for the Tucson site. Conversely, the spatial variability of the rate coefficient was an order of magnitude greater for the Utah site. These differences in variability are consistent with conditions associated with the respective sites. For example, the greater microbial activity observed in the vicinity of the injection wells for the Utah site is consistent with the biomass distribution determined from analysis of core samples, which shows larger bacterial cell densities for the region near the injection wells. These results illustrate the utility of biotracer tests for in situ characterization of microbial activity (e.g., biodegradation potential), including evaluation of potential spatial variability.

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Benzoate removal by aerobic bioslimes

Cited by 3 publications

References 5 publications

Biodegradation of aromatic compounds in a self‐cycling fermenter (SCF)

Biodegradation of aromatic compounds in a self‐cycling fermenter (SCF)

Modelling the consumption of dissolved contaminants by biofilm periphyton in open-channel flow

Spatial Variability of In Situ Microbial Activity: Biotracer Tests

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