Hydrodynamic characterization of a trickle bed air biofilter

Trejo-Aguilar, Gloria; Revah, Sergio; Lobo-Oehmichen, Ricardo

doi:10.1016/j.cej.2005.04.001

Cited by 34 publications

(26 citation statements)

References 10 publications

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“…In another study foam formation was reported in a xylene-removing BTF with no supplementation of any compound. 16 To diminish foam formation, the authors added an antifoaming agent to the recirculating medium. In the present study no antifoaming agent was added to BTF25.…”

Section: Discussionmentioning

confidence: 99%

“…• C. The reason for slower start-up of BTF52 could be that the original temperature of HANDS was [15][16][17][18][19][20] • C and it took longer for the microbial community to adapt at 52…”

Section: Discussionmentioning

confidence: 99%

“…• C. Highly activated nitrifying and denitrifying sludge (HANDS) from a membrane bioreactor (operating temperature [15][16][17][18][19][20] • C) treating landfill leachate (Hooge Maey, Antwerp, Belgium) was used as inoculum. The HANDS (7.02 g volatile suspended solids L −1 ) was stored at 4…”

Section: Batch Degradation Experimentsmentioning

confidence: 99%

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Thermophilic biotrickling filtration of a mixture of isobutyraldehyde and 2‐pentanone

Luvsanjamba¹,

Sercu²,

Kertész³

et al. 2006

J of Chemical Tech & Biotech

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In this study, the possibility of the removal of isobutyraldehyde and 2-pentanone was investigated in biotrickling filters (BTFs) at higher temperature (52-65• C). First, the biodegradation of isobutyraldehyde and 2-pentanone in activated sludge was proven by batch experiments at 52 and 62• C. In batch experiments isobutyraldehyde was also degraded up to a temperature of 72• C. Thereafter two bioreactors were operated in parallel, one at ambient temperature (BTF25), and one at 52• C (BTF52). Maximum elimination capacities of 97 and 139 g m −3 h −1 were observed in BTF25 and BTF52, respectively, for isobutyraldehyde. Maximum elimination capacities of 53 and 63 g m −3 h −1 were obtained for 2-pentanone in BTF25 and BTF52, respectively. A significant difference was observed in the operational stability of the two reactors. In the reactor at ambient temperature, operational problems such as foam formation, higher biomass accumulation and organic acid production were observed. In the thermophilic reactor these problems did not occur or were less severe.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Thermophilic biotrickling filtration of a mixture of isobutyraldehyde and 2‐pentanone

Luvsanjamba¹,

Sercu²,

Kertész³

et al. 2006

J of Chemical Tech & Biotech

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“…Further assessment at this scale includes the evaluation of the residence time distribution technique (RTD), which has been used for characterizing the hydrodynamics in biotrickling filters (Iliuta et al 2002;Trejo-Aguilar et al 2005, Sharvelle et al 2008a. It is often considered that the liquid movement through a porous bed occurs by an ideal plug flow pattern.…”

mentioning

confidence: 99%

Modeling the effects of biomass accumulation on the performance of a biotrickling filter packed with PUF support for the alkaline biotreatment of dimethyl disulfide vapors in air

Arellano-García¹,

Dorado²,

Morales-Guadarrama³

et al. 2014

Appl Microbiol Biotechnol

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Excess biomass buildup in biotrickling filters leads to low performance. The effect of biomass accumulation in a biotrickling filter (BTF) packed with polyurethane foam (PUF) was assessed in terms of hydrodynamics and void space availability in a system treating dimethyl disulfide (DMDS) vapors with an alkalophilic consortium. A sample of colonized support from a BTF having been operating for over a year was analyzed and it was found that the BTF void bed fraction was reduced to almost half of that calculated initially without biomass. Liquid flow through the examined BTF yielded dispersion coefficient values of 0.30 and 0.72 m 2 h -1 , for clean or colonized PUF respectively. 3D images of attached biomass obtained with magnetic resonance imaging allowed to calculate the superficial area, the volume percentage and the biofilm depth as 650 m 2 m -3 , 35% and 0.6 mm respectively. A simplified geometric approximation of the complex PUF structure was proposed using an orthogonal 3D mesh which predicted 600 m 2 m -3 for the same biomass content. With this 1 simplified model it is suggested that the optimum biomass content would be around 20% of bed volume.Biofilm activity was evaluated by respirometry and biological intrinsic kinetics could be described with a Haldane equation type. Experimentally determined parameters were used in a mathematical model to simulate the DMDS elimination capacity (EC) and better description was found when the removal experimental data were matched with a model including liquid axial dispersion in contrast to an ideal plug flow model.

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“…1). The solution used for research purposes has been made of K 2 HPO 4 -1 g, KCl -0.5 g, MgSO 4 ×7H 2 O -0.5 g, FeSO 4 ×7H 2 O -0,1 g, NaNO 3 -0.90 g and 1000 g distilled water (Baltrėnas, zagorskis 2009;Trejo-Aguilar et al 2005;Liao et al 2008;Chang, Lu 2003;Wright 2005;Dorado et al 2008;Mansour et al 2011).…”

Section: Maintaining Humidity In the Biofilter With A Wavy Lamellar Smentioning

confidence: 99%

Effectiveness Research on a Wavy Lamellar Plate-Type Biofilter With a Capillary System for the Humidification of the Packing Material Applying Introinduced Microorganisms

Mačaitis

Misevičius

Paškevičius

et al. 2014

Journal of Environmental Engineering and Landscape Management

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Abstract. Trinitrotoluene (TNT), a commonly used explosive for military and industrial applications, can cause serious environmental pollution. 28-day laboratory pot experiment was carried out applying bioaugmentation using laboratory selected bacterial strains as inoculum, biostimulation with molasses and cabbage leaf extract, and phytoremediation using rye and blue fenugreek to study the effect of these treatments on TNT removal and changes in soil microbial community responsible for contaminant degradation. Chemical analyses revealed significant decreases in TNT concentrations, including reduction of some of the TNT to its amino derivates during the 28-day tests. The combination of bioaugmentation-biostimulation approach coupled with rye cultivation had the most profound effect on TNT degradation. Although plants enhanced the total microbial community abundance, blue fenugreek cultivation did not significantly affect the TNT degradation rate. The results from molecular analyses suggested the survival and elevation of the introduced bacterial strains throughout the experiment. Keywords: TNT, bioaugmentation, biostimulation, phytoremediation, microbial community.

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Hydrodynamic characterization of a trickle bed air biofilter

Cited by 34 publications

References 10 publications

Thermophilic biotrickling filtration of a mixture of isobutyraldehyde and 2‐pentanone

Thermophilic biotrickling filtration of a mixture of isobutyraldehyde and 2‐pentanone

Modeling the effects of biomass accumulation on the performance of a biotrickling filter packed with PUF support for the alkaline biotreatment of dimethyl disulfide vapors in air

Effectiveness Research on a Wavy Lamellar Plate-Type Biofilter With a Capillary System for the Humidification of the Packing Material Applying Introinduced Microorganisms

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