Impact of interchanging VOCs on the performance of trickle bed air biofilter

Kim, Daekeun; Cai, Zhangli; Sorial, George A.

doi:10.1016/j.cej.2005.04.004

Cited by 40 publications

(28 citation statements)

References 17 publications

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“…It was found that the conditions were more favorable for EA biodegradation than aromatic VOCs. Similar conclusions were also obtained for the mixtures of oxygenated and aromatic VOCs by other researchers [36][37][38]. It was considered that pollutants with high Henry's constant were more difficult to eliminate in BTF, because these pollutants had an unfavorable gas-liquid partition and the pollutants concentrations in the biofilm were too low to sustain a high biodegradation rate [13].…”

Section: Removal Efficiencies Of Vocssupporting

confidence: 66%

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

Zhao

Chen

et al. 2012

Chemical Engineering Journal

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Section: Removal Efficiencies Of Vocssupporting

confidence: 66%

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

Zhao

Chen

et al. 2012

Chemical Engineering Journal

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“…However, when the change was on the order of 50 ppmv, the TBABs' performances increased without the need of any acclimation periods. This is in concordance with findings of Kim et al (2005a). They demonstrated that hydrophilic compounds were degraded easily and deposited additional cell mass in the biofilter, while degradation of hydrophobic compounds was retarded until biological cultures produced a sufficient RNA or enzyme/protein to utilize these compounds.…”

Section: Performance Of Tbabs a And Bsupporting

confidence: 81%

Treatment of hydrophobic VOCs in trickling bed air biofilter: Emphasis on long-term effect of initial alternate use of hydrophilic VOCs and microbial species evolution

Zehraoui

Sorial

2014

Journal of the Air & Waste Management Association

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The main research objective of this study is to enhance the removal of recalcitrant compounds that are not readily bioavailable due to limiting mass transfer rate between the liquid and gas phases. Four trickle-bed air biofilters (TBABs), loaded with pelletized diatomaceous earth support media, were run at an empty bed residence time (EBRT) of 120 sec. After an acclimation period at constant loading rate (LR) of n-hexane (13.2 g m À3 hr À1 ) and intermittent feeding of methanol, n-hexane influent LR was then increased in step-wise fashion to 47.7 g m À3 hr À1 for biofilters receiving acidic nutrients (pH 4), and to 36.3 g m À3 hr À1 for biofilters receiving nutrient at pH 7. The results have shown that for TBABs receiving nutrient at pH 4, greater elimination capacities were obtained as compared to TBABs working at pH 7. n-Hexane removal efficiency of more than 84% at LR up to 47.7 g m À3 hr À1 was obtained for pH 4 nutrient-fed biofilters, while for biofilters with nutrients fed at pH 7, the removal efficiency did not exceed 64% for n-hexane LR of 36.3 g m À3 hr À1 . The microbial analysis revealed that no fungal community was detected in TBABs run at neutral pH. The fungi communities that were initially acclimating TBABs run at pH 4, namely, Aspergillus niger and Fusarium solani, were not detected at the end of the experiment, while Gibberella moniliformis (Fusarium verticillioides) genus became the dominant species. Gibberella moniliformis (Fusarium verticillioides) was present along all the biofilter media and sustained very high nhexane elimination at steady-state condition.Implications: With growing apprehension about sustainability and environmental protection, with limited resources available, and with the passage of the 1990 Amendments to the Clean Air Act, there is more need for using air pollution control techniques that are sound economically and proven environmentally friendly. Biofiltration systems, namely, trickle-bed air biofilters, were for decades recognized as efficient in treating air pollutants. Thus, the application of this technique over a wide industrial spectrum would certainly contribute to reduction of hazardous gas emissions.

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“…This test confirmed that the diffusion limited, zero order model was the best for this application because the variation of the experimental constant was smallest (in the tables, the best cases are shown in bold type). However, it was interesting to note that other work (Kim et al, 2005), which studied styrene removal in a more complex mixture, favoured a first order model with a rate constant of 0.044 s -1 compared to the 0.04 s -1 averaged figure reported (Table 2). Experiment ii---with Pall rings (15×15×1 mm) and changes in the inlet concentration of styrene while keeping the inlet acetone concentration constant (at 50 mg/m 3 ).…”

Section: Steady Statementioning

confidence: 96%

Modelling the steady state and dynamic conditions of a biotrickling filter treating styrene and acetone in air

Gerrard

Havranek

Novak

et al. 2010

Braz. arch. biol. technol.

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Impact of interchanging VOCs on the performance of trickle bed air biofilter

Cited by 40 publications

References 17 publications

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

Treatment of hydrophobic VOCs in trickling bed air biofilter: Emphasis on long-term effect of initial alternate use of hydrophilic VOCs and microbial species evolution

Modelling the steady state and dynamic conditions of a biotrickling filter treating styrene and acetone in air

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