Analysis of the rate-limiting step of an anaerobic biotrickling filter removing TCE vapors

Popat, Sudeep C.; Deshusses, Marc A.

doi:10.1016/j.procbio.2009.11.017

Cited by 21 publications

(9 citation statements)

References 33 publications

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“…Concerning reactor hydrodynamics, no flooding conditions were observed since gas phase and liquid phase flowed co‐currently during variable TLV experiments. Similar observations were also made by other authors for a co‐current BTF for TCE removal . ORP profiles from 150 mV to −100 mV in the variable TLV experiment also indicated that TDS did not accumulate in the liquid phase.…”

Section: Resultsmentioning

confidence: 99%

“…A co‐current configuration implies a favorable O 2 /H 2 S concentration ratio at the reactor inlet. Though some studies have focused on the effect of TLV and gas supply of BTF on co‐current configuration for removing different contaminants such as xylene and trichloroethene (TCE) vapors, few studies have analyzed the effect of these variables on BTF performance during H 2 S desulfurization operated in co‐current flow.…”

Section: Introductionmentioning

confidence: 99%

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Influence of trickling liquid velocity and flow pattern in the improvement of oxygen transport in aerobic biotrickling filters for biogas desulfurization

López

Bezerra

Mora

et al. 2015

J of Chemical Tech & Biotech

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BACKGROUND: Biological oxidation in biotrickling filters of high H 2 S loads contained in biogas streams still requires further study to reduce elemental sulfur accumulation due to limited gas-liquid oxygen mass transfer inside biotrickling filter beds.Reduction of elemental sulfur accumulation may be improved by regulating the main manipulated variables related to oxygen mass transfer efficiency during biological hydrogen sulfide removal in biotrickling filters. RESULTS: Trickling liquid velocity and co-current flow were selected as the most appropriate manipulated variable and flow pattern configuration compared with manipulating the air supply flow rate and a counter-current flow pattern in order to improve gas-liquid oxygen mass transfer in abiotic conditions. The influence of trickling liquid velocity on the performance of a lab-scale biotrickling filter treating high loads of H 2 S in a biogas mimic and operating in co-current flow at neutral pH and packed with plastic pall rings was investigated.CONCLUSIONS: The effect of trickling liquid velocity modulation between 4.4 and 18.9 m h −1 in biotrickling filter performance was compared with operation without trickling liquid velocity regulation. Velocity regulation resulted in an improvement of 10% in the elimination capacity and, most importantly, a 9% increase in product selectivity to sulfate at a loading rate of 283.8 g S-H 2 S m −3 h −1 . Concentration profiles along the biotrickling filter height evidenced that trickling liquid velocity regulation progressively led to better dissolved oxygen distribution and, thus, enhanced overall biotrickling filter performance.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of trickling liquid velocity and flow pattern in the improvement of oxygen transport in aerobic biotrickling filters for biogas desulfurization

López

Bezerra

Mora

et al. 2015

J of Chemical Tech & Biotech

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“…For example, toluene-degrading bacterium Pseudomonas putida [23], P. putida (MTCC 102) [24], trichloroethene treating bacterium Dehalococcoides sp. [25] and monochlorobenzene-oxidizing microorganism Acinetobacter calcoaceticus [26], and so on have been isolated for VOCs treatment. However, compared with the microorganisms for treatment VOCs, the species isolated for biodegradation VOSCs are very little [5].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the removal of ethanethiol in twin-biotrickling filters inoculated with strain RG-1 and B350 mixed microorganisms

Wan

et al. 2010

Journal of Hazardous Materials

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“…Among all the biological technologies, biofiltration is regarded as a mature technique to purify waste gases polluted with large volumes and low concentrations of VOCs (Sakuma et al 2008;Bordel et al 2008;Park et al 2009;Popat and Deshusses 2010). Efficient removal of, for example, aromatics, chlorinated hydrocarbons, organic sulfur compounds, and other VOCs had been reported in many lab-scale biofilters (Sempere et al 2008;Giri et al 2010;Chen et al 2010;Rene et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Modeling of kinetics approach on the removal in methyl ethyl ketone using pressmud based biofilter systems

Kumar

Nair

Saravanan

2015

Model. Earth Syst. Environ.

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The removal of toxic methyl ethyl ketone (MEK) is studied in a lab scale biofilter packed with pressmud as packing materials. The biofiltration operation is divided into 4 phases for a period of 200 days. The maximum removal efficiency of 98 % is achieved during phase I for an inlet concentration of 0.2 g m -3 at a gas flow rate of 0.03 m -3 of MEK. The model simulation results have been reproduced and compared with the above sets of experimental data. Three different model variations are considered: model with low inlet MEK concentration, with high inlet MEK concentration, and with air flow rate modification. A sensitivity analysis has been performed on model to study the effect of important parameters on the removal efficiency. Model limitations and improvements have been highlighted.

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Analysis of the rate-limiting step of an anaerobic biotrickling filter removing TCE vapors

Cited by 21 publications

References 33 publications

Influence of trickling liquid velocity and flow pattern in the improvement of oxygen transport in aerobic biotrickling filters for biogas desulfurization

Influence of trickling liquid velocity and flow pattern in the improvement of oxygen transport in aerobic biotrickling filters for biogas desulfurization

Comparison of the removal of ethanethiol in twin-biotrickling filters inoculated with strain RG-1 and B350 mixed microorganisms

Modeling of kinetics approach on the removal in methyl ethyl ketone using pressmud based biofilter systems

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