Biological purification of exhaust air containing toluene vapor in a filter‐bed reactor

Bibeau, Louise; Heltz, M.; Kiared, Karim; Leroux, A.; Brzeziński, Ryszard; Viel, Guy

doi:10.1002/cjce.5450750512

Cited by 39 publications

(27 citation statements)

References 15 publications

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“…Performance of laboratory-scale biofilters has been widely investigated under steady-state conditions for a variety of key pollutants such as oxygenated compounds [1,2], or aromatics [3][4][5][6]; or its mixtures [7][8][9]. Most of the studies have focussed on the evaluation of the elimination capacity and its variation with the operating parameters and media characteristics, resulting in valuable knowledge to extend the applicability of the biofiltration process for VOC removal.…”

Section: Introductionmentioning

confidence: 99%

Biofiltration of ethyl acetate under continuous and intermittent loading

et al. 2007

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A laboratory‐scale peat biofilter was used for ethyl acetate removal from an air stream over a period lasting 1 yr. In a first stage, the biofilter was operated under continuous mode: a maximum elimination capacity of 400 g m−3 h−1 was obtained, and ethyl acetate was efficiently degraded with empty bed residence time (EBRT) as short as 22 s. The estimated yield coefficient, determined from the carbon dioxide production, resulted in 0.42 g dry biomass produced per gram of ethyl acetate consumed. The living and the dead cell concentrations were also monitored. The dead cell percentages varied between 18 and 85%, progressive increases in the dead cell percentages were achieved as EBRT decreased and inlet load increased. In a second stage, operation under intermittent loading (16 h/day or 2‐h‐on/2‐h‐off cycles) was performed to investigate the effect of industrial practices such as overnight and weekend shutdowns, intermittent emission or inlet concentration and flow rate peaks. System performance was not significantly affected by changes, demonstrating the process viability for industrial applications. The intermittent loading of 16 h/day resulted in lower penetration of contaminant in the bed in comparison with continuous loading, but the 2‐h‐on/2‐h‐off caused a greater pollutant breakthrough detected at the first quarter of the biofilter, with a high increase in the dead cell density. Respirometric monitoring showed that biomass was fully activated in 1–2 h after night or weekend starvations. Finally, a 15 days starvation period was applied and afterwards operation was restarted. The system performance was fully restored without noticeable reacclimation period and dead cell density recovered normal values. © 2007 American Institute of Chemical Engineers Environ Prog, 2007

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Section: Introductionmentioning

confidence: 99%

Biofiltration of ethyl acetate under continuous and intermittent loading

et al. 2007

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“…The most frequently used conventional technologies are absorption, adsorption, combustion and condensation equipment (Devinny et al, 1999). These are very expensive, due to the fact that they require large amounts of additional energy to function and have high capital, operation and maintenance costs (Bibeau et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Effects of gas flow rate, inlet concentration and temperature on the biofiltration of toluene vapors

Vergara-Fernández

Molina

Pulido

et al. 2007

Journal of Environmental Management

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“…An integrated-bioreactor, measuring 5.0 m in length, 1.2 m in width, and 1.2 m in height, was continuously operated to eliminate SO 2 (Fig. 1).…”

Section: Integrated-bioreactormentioning

confidence: 99%

“…Despite the high removal efficiencies of these techniques, they require large amounts of additional energy to function as well as high capital, operation and maintenance costs. Hence, these techniques become unsuitable because of increasing demand to obtain environmental sustainability [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Operational aspects of SO2 removal and microbial population in an integrated-bioreactor with two bioreaction zones

Yang

Lin

et al. 2016

Bioprocess Biosyst Eng

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An integrated-bioreactor, which consisted of a suspended zone and an immobilized zone, was applied to treat gases containing SO 2 . The removal of SO 2 in suspended zone differed slightly from that in immobilized zone. The influences of operational aspects such as SO 2 load, temperature, and pH on integrated-bioreactor performance and bacterial community composition were investigated. The synergistic action of the two zones led to effective reduction of SO 2 , and the total removal efficiencies with the inlet concentration of 91-117 mg/m 3 , were over 85 % in steady state. Paenibacillus sp. and Lysinibacillus sp. dominated both zones as desulfurization bacteria. Results of polymerase chain reaction-denaturing gradient gel electrophoresis followed by clone library analysis indicated that temporal shifts in bacterial community composition in both zones developed differently. Differences in the concentration of introduced SO 2 and supported mode of microorganisms for survival, confirmed that bacterial community composition and abundance significantly differed among individual zones.

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Biological purification of exhaust air containing toluene vapor in a filter‐bed reactor

Cited by 39 publications

References 15 publications

Biofiltration of ethyl acetate under continuous and intermittent loading

Biofiltration of ethyl acetate under continuous and intermittent loading

Effects of gas flow rate, inlet concentration and temperature on the biofiltration of toluene vapors

Operational aspects of SO2 removal and microbial population in an integrated-bioreactor with two bioreaction zones

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