Effect of Biotrickling Filter Operating Parameters on Chlorobenzenes Degradation

Seignez, C.; Atti, Anna; Adler, N.; Péringer, Paul

doi:10.1061/(asce)0733-9372(2002)128:4(360)

Cited by 14 publications

(11 citation statements)

References 19 publications

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“…, Smith et al 1998Jorio et al 2000͒. The number of studies concerning the treatment of contaminated gas stream by TBABs has increased in the past decade ͑Sorial et al. 1993a,b, 1994, 1995Zhu et al 1996;Alonso et al 1997Alonso et al , 1998Alonso et al , 1999Alonso et al , 2000Alonso et al , 2001Chou and Huang 1997;Pedersen and Arvin 1997;Kong et al 2001;Seignez et al 2002;Smith et al 2002;Arulneyam and Swaminathan 2003͒. Factors found to affect the decontamination efficiency include: Nature of the contaminants, packing materials and configurations, empty bed retention time ͑EBRT͒, volumetric loading rates, nutrient feed flow rates, nutrient solution pH, and flow patterns of air.…”

Section: Introductionmentioning

confidence: 99%

Removal of Methyl Isobutyl Ketone From Contaminated Air by Trickle-Bed Air Biofilter

2005

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A laboratory-scale trickle-bed air biofilter was evaluated for the removal of methyl isobutyl ketone ͑MIBK͒ from a waste gas stream. Six-millimeter ͑6 mm͒ Celite pellets ͑R-635͒ were used as the biological attachment medium. Effects of MIBK volumetric loading rates on removal efficiency, biofilter reacclimation, biomass growth, and removal kinetics were studied under three different operating conditions, namely, backwashing and two intermittent periods ͑off chemical-no MIBK input; and off flow-no flow input͒. Backwashing of the biofilter once a week with full-medium fluidization removed the excess biomass and attained stable long-term performance with over 99% removal efficiency for loading rates less than 3.26 kg chemical oxygen demand ͑COD͒ /m 3 day. The two intermittent periods could also sustain high removal efficiency for loading rates up to 1.09 kg COD/ m 3 day without any backwashing. The recovery time increased with an increase in loading rates. Furthermore, the intermittent operations required a longer time to recover than backwashing. The pseudo-first-order removal rate constant decreased with an increase in volumetric loading rate. The removal kinetics showed an apparent dependency on the experimental operating conditions.

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Section: Introductionmentioning

confidence: 99%

Removal of Methyl Isobutyl Ketone From Contaminated Air by Trickle-Bed Air Biofilter

2005

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“…It was inferred that the increase in loading rate causes microbial inhibition and subsequent reduction of removal efficiency. Seignez, et al [11] reported that at dichlorobenzene inlet concentration of 1.75 g/m 3 corresponding with the maximum load of 62 g/(m 3 ·h), the removal efficiency reduced to 36% because of the inability of the microorganisms to degrade higher load. Delhomenie, et al [13] observed that a maximum elimination capacity of 75 g/(m 3 ·h) was obtained for chlorobenzene inlet loading of 80 g/(m 3 ·h).…”

Section: Effect Of Loading Rate On Elimination Capacity Without/with mentioning

confidence: 96%

Improvement of trickling biofilter purification performance on treating chlorobenzene in waste gases using surfactant

2007

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A laboratory-scale trickling biofilter column, filled with Raschig rings and inoculated with Pseudomonas putida (ATCC 1785) was used to purify chlorobenzene contained waste gases. Sodium dodecyl sulfonate (SDS) was used to enhance the performance of trickling biofilter. Purification performance of the trickling biofilter was examined for chlorobenzene inlet concentration of 1.20∼5.04 g/m 3 at different EBRTs between 76∼153 s. Without SDS addition, with simultaneous increase in chlorobenzene inlet loading rate and gas flow rate, 100% removal efficiency was achieved at EBRT of 109 s and inlet loadings below 5120 mg/m 3 . Addition of SDS to nutrient solution led to improvement of trickling biofilter purification performance. By introducing 25 mg/L SDS, the removal efficiency was increased by 21% and elimination capacity up to 234 g/(m 3 ·h) was achieved at chlorobenzene inlet loading of 241 g/(m 3 ·h). Although SDS concentration experienced a low rate reduction after continuous nutrient solution recirculation, this result has little influence on trickling biofilter's removal efficiency in monitoring period.

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“…Experiments were performed in a laboratory-scale downflow cocurrent BTF that has been described previously (Seignez et al 2002), run at ambient temperature. The BTF column (40 l total volume, 1.27 m height, 0.2 m internal diameter) was made of glass and was equipped with five ports located at 0.125, 0.375, 0.625 and 0.875 m from the top for gas sampling.…”

Section: Biotrickling Filtermentioning

confidence: 99%

“…Muconic acid, an intermediate of chlorobenzene degradation, transiently accumulated during a substrate pulse. In a BTF system treating CB and o-DCB waste gas that was inoculated with this adapted microbial community, another degradation intermediate was observed in the trickling liquid that was probably chloro-or dichlorocatechol (Seignez et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Steady-state and transient-state performance of a biotrickling filter treating chlorobenzene-containing waste gas

Seignez

Adler

Thoeni

et al. 2004

Appl Microbiol Biotechnol

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Biotrickling filter (BTF) technology was applied for the treatment of waste gas containing a mixture of chlorobenzene and 1,2-dichlorobenzene. An adapted microbial community was immobilised on a structured packing material. The strategy followed was to reach high removal efficiencies at initially low mass loading rates followed by an increase of the latter. This procedure was successful and resulted in a short start-up period of only 2 weeks. A 3-month operation under steady-state conditions showed good performance, with >95% removal efficiency at a mass loading rate of 1,800 g m(-3) day(-1). Dimensionless concentration profiles showed that the chlorobenzenes were simultaneously degraded. Low dissolved organic carbon of 15 mg l(-1) and stoichiometric chloride concentrations in the trickling liquid indicated complete mineralisation of the pollutant. Transient-state experiments with five times higher mass loading rates caused a decrease in the removal efficiency that recovered rapidly once the mass loading rate returned to its original steady-state level. A progressive increase of the mass loading rate in a long-term performance experiment showed that the removal efficiency could be kept stable between 95 and 99% at loads of up to 5,200 g m(-3) day(-1) over several days. Above this mass loading rate, the elimination capacity did not increase any further. These results demonstrated that with a well-adapted inoculum and optimal operation parameters, a BTF system with excellent performance and stability that efficiently removes a mixture of chlorobenzene vapours from air can be obtained.

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Effect of Biotrickling Filter Operating Parameters on Chlorobenzenes Degradation

Cited by 14 publications

References 19 publications

Removal of Methyl Isobutyl Ketone From Contaminated Air by Trickle-Bed Air Biofilter

Removal of Methyl Isobutyl Ketone From Contaminated Air by Trickle-Bed Air Biofilter

Improvement of trickling biofilter purification performance on treating chlorobenzene in waste gases using surfactant

Steady-state and transient-state performance of a biotrickling filter treating chlorobenzene-containing waste gas

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