Development of a biofilter with water content control for research purposes

Beuger, Abraham; Gostomski, Peter

doi:10.1016/j.cej.2009.01.045

Cited by 25 publications

(22 citation statements)

References 25 publications

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“…Maintaining the moisture content at an optimum level is a challenge in biofiltration. The efforts have been mainly focused on the careful monitoring and addition of water to biofilters [8,9]. New methodologies to reduce moisture control difficulties during biofiltration deserve to be considered.…”

Section: Introductionmentioning

confidence: 99%

Application of water super absorbents in waste air biofiltration

Akbari

Fazaelipoor

Goharizi

2011

Biotechnol Bioproc E

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Water super absorbents are low cross-linked hydrophilic polymers that absorb water in amounts up to several hundred times their dry weight. In this study, the effect of adding these materials to the bed of a biofilter was investigated. Two equal size biofilters were used for this purpose. One of the biofilters was packed with a mixture of perlite and a commercial polyacrylamide based super absorbent (2.3% dry weight), and the other was packed with perlite to perform as a control. The biofilters were inoculated with a bacterial culture that was able to grow on n-hexane as the sole source of carbon and energy. Both biofilters removed up to 90% of the entering pollutants when using an inlet n-hexane concentration of 1 g/m 3 , and an air flow rate of 0.3 L/min (mass loading of 18.34 g/m 3 /h, and empty bed residence time of 3.27 min). The super absorbent had a positive effect on the performance of the biofilter. While the difference in the performance of the biofilters was marginal when frequent moistening was applied, the difference was considerable when moistening was less frequent.

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Section: Introductionmentioning

confidence: 99%

Application of water super absorbents in waste air biofiltration

Akbari

Fazaelipoor

Goharizi

2011

Biotechnol Bioproc E

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“…The same applies to the dissolved components, with movement between the soil and the water chamber driven by the concentration gradients. Figure shows configuration of the typical differential biofiltration reactor, used in the current work, which was initially developed by Beuger and Gostomski …”

Section: Configuration Of Differential Biofiltration Reactormentioning

confidence: 99%

Development of a modified differential biofiltration reactor with online sample and carbon dioxide monitoring system

Detchanamurthy

Gostomski

2012

Asia-Pacific J Chem Eng

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Biofiltration is one of the air pollution control technologies (APCTs) used widely in treating the odorous and volatile organic compounds (VOCs). Reliability and robustness in measuring the pollutant degradation rate and carbon dioxide production is considered most important in a biofiltration system. In this current work, a gas chromatography (GC) system and carbon dioxide analyser were introduced online to a lab scale differential biofiltration reactor with water content control. Toluene, one of the potential VOCs, was used as a model pollutant in our current study. The feasibility and limitations of online GC and CO2 analyzer was evaluated by measuring the inlet and outlet toluene concentrations along with CO2 concentrations and compared with the regular offline measurements. Furthermore, a simple diffusion system was proposed and used in the current work to improve the robustness of toluene vapour production. The results indicate that the modifications carried out in the lab scale biofiltration reactor and in the diffusion system improved the data collection and stability. This improved system can be used effectively in the lab scale biofiltration research. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.

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“…Various factors affect the growth kinetics of participating microorganisms, including substrate concentration, moisture content, temperature, electron acceptor, pH, toxic intermediates, and availability of mineral nutrients. Any or a combination of these factors can limit biomass growth rate and substrate biodegradation (Beuger and Gostomski, 2009;Ottengraf, 1986;Sakuma et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Temporal variation of microbial population in acclimation and start-up period of a thermophilic desulfurization biofilter

Zhang

Liu

et al. 2016

International Biodeterioration & Biodegradation

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a b s t r a c tMicroorganisms in a biofilter play important roles in the gas contaminants treatment process. In this study, thermophilic desulfurization bacteria were inoculated in a thermophilic biofilter for SO 2 treatment after acclimation and enrichment. Molecular biology techniques were applied to detect temporal variation of microbial population during acclimation and biofilter start-up period. The acclimation temperatures were 50, 55, and 60 C. Desulfurization bacteria dominated the enrichments. During acclimation, desulfurization bacteria and thermophilic bacteria increased from 36.84% to 78.95%e52.94% and 88.24%, respectively. In addition, the microbial diversity indices of these enrichments decreased with time. Substrate species and acclimation temperature influenced the microbial structure of the enrichments. The thermophilic biofilter inoculated with enrichments could achieve a rapid start-up, and over 80% of removal efficiency could be obtained within two weeks. The maximum elimination capacity was 38.71 g m À3 h À1 at 152 mg m À3 inlet concentration. The total sulfur bacteria proportion increased obviously during the start-up period. Moreover, desulfurization bacteria that originally existed in inocula, e.g., Pseudomonas putida, Bacillus thioparans, Microbacterium sp., and Thermoanaerobacteriaceae, were abundant in the thermophilic biofilter for SO 2 removal.

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Development of a biofilter with water content control for research purposes

Cited by 25 publications

References 25 publications

Application of water super absorbents in waste air biofiltration

Application of water super absorbents in waste air biofiltration

Development of a modified differential biofiltration reactor with online sample and carbon dioxide monitoring system

Temporal variation of microbial population in acclimation and start-up period of a thermophilic desulfurization biofilter

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