Removal of toluene in waste gases using a biological trickling filter

Pedersen, Anne Rathmann; Arvin, Erik

doi:10.1007/bf00695341

Cited by 62 publications

(34 citation statements)

References 6 publications

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“…Removal capacities of the same magnitude were found by other researchers studing toluene removal from waste gases in laboratory trickling filters (Wolff 1992;Schindler et al 1994 andPedersen &Arvin 1995). Shareefdeen & Baltzis (1994) recently proved that a laboratory biofilter, modelled both for steadystate and transient operations, was capable of achieving 100% removal of toluene, given enough residence time.…”

Section: Biofilter Efficiency In Toluene Removalsupporting

confidence: 53%

Characterization of a biofilter treating toluene contaminated air

et al. 1997

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The removal of toluene from an experimental gas-stream was studied in an industrial biofilter filled with poplar wood bark. Toluene degradation, approximately 85% through the operating period, resulted in low levels of toluene in the off-gas effluent. For a toluene load of 6.7 g m -3 h -1 the elimination capacity of the biofilter was found to be 6.0 g m -3 h -1. Toluene removal was due to biodegradative activity of microorganisms in the filter bed; the most probable number counts of toluene degraders increased from 2.4× 102 to 6.4× 107 MPN/g dry packing material in about seven months of air-toluene supply. The degradative capacity of a Burkholderia (Pseudomonas) cepacia strain, isolated from the biofilter material, as an example Of the effectiveness of microbial toluene removal was tested in batch culture. The microorganism degraded completely 250 ppm of toluene supplied as sole carbon source in 24 hours. The high performance demonstrated for a long period and the mechanical and physico-chemical stability of the biofilter favour its use in industrial full-scale off-gas control.

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Section: Biofilter Efficiency In Toluene Removalsupporting

confidence: 53%

Characterization of a biofilter treating toluene contaminated air

et al. 1997

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“…Some studies have shown that the flow rate of the trickling phase may affect the overall reactor's performance under certain conditions. In studies undertaken with pollutants as toluene, 75 mono-chlorobenzene, 76 and dichloromethane, 15,17 it has been recommended to apply a high superficial liquid flow rate (L), which will result in a low G/L ratio. This would ensure a high degree of wetting, resulting in a high reactor's performance.…”

Section: Characteristics Of the Trickling Liquid Phase And The Gas Phasementioning

confidence: 99%

Bioprocesses for air pollution control

Kennes

Rene

Veiga

2009

J of Chemical Tech & Biotech

241

131

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Bioprocesses have been developed as relatively recent alternatives to conventional, non-biological technologies, for waste gas treatment and air pollution control in general. This paper reviews major biodegradation processes relevant in this field as well as both accepted and major innovative bioreactor configurations studied or used nowadays for the treatment of polluted air, i.e. biofilters, one-and two-liquid phase biotrickling filters, bioscrubbers, membrane bioreactors, rotating biodiscs and biodrums, one-and two-liquid phase suspended growth bioreactors, as well as hybrid reactor configurations. Some of these bioreactors are being used at full-scale for solving air pollution problems, while others are still at the research and development stage at laboratory-or pilot-scale.

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“…The observed slope (0.31) was only a little higher than the Henry's constant, indicating that the system was close to equilibrium at the gas effluent of the column. Therefore, mass transfer had little influence on the elimination capacity (Pedersen and Arvin, 1995).…”

Section: Elimination Of Toluenementioning

confidence: 99%

“…The inoculum originated from a creosote-polluted sandy aquifer (Fredensborg, Denmark) and was collected from an earlier experiment in which a trickling filter treating toluene was studied (Pedersen and Arvin, 1995). A sample of the (1) gas flow meter; (2) integrator (Shimadzu C-R3A Chromatopac); (3) gas chromatograph (Shimadzu GC-14A); (4) 2-points valve and 8-points valve (Valco Instruments Co. Inc.) for gas sampling; (5) filter column; (6) gas mixing coil; (7) membrane pump for air supply; (8) peristaltic pump; (9) pure toluene flask; (10) liquid container; (11) recirculation pump.…”

Section: Inoculation Of Biofilm Reactormentioning

confidence: 99%