Biological purification of exhaust air using fixed bacterial monocultures

Kirchner, K.; Schlachter, U.; Rehm, Hans‐Jürgen

doi:10.1007/bf00270808

Cited by 46 publications

(24 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although activated sludge can be used as such a source, it does not have sufficient capability for elimination of VOC at the beginning of operation. Therefore, a long adaptation period (2-4 weeks) is required for acclimation of bacteria (Kirchner et al, 1987(Kirchner et al, , 1989. Addition of a specific bacterial degrader to the filter can shorten the adaptation period at the starting up or restart of the process (Leson and Winer, 1991).…”

Section: Introductionmentioning

confidence: 99%

Isolation, Characterization and Application to Off-Gas Treatment of Toluene-Degrading Bacteria.

Hori

Yamashita

Ishii

et al. 2001

J. Chem. Eng. Japan

View full text Add to dashboard Cite

Toluene-degrading bacteria were isolated from the trickle bed air biofilter (TBAB), which had eliminated toluene efficiently for three months. Among the isolates, Acinetobacter genospecies Tol 5 demonstrated the highest efficiency in toluene removal. A. genospecies Tol 5 tended to adhere to hydrophobic materials showing water-repellent. When the bacterium was grown on toluene in the presence of polyurethane foam, almost all the cells adhered to the polymer support until the amount of 0.12 kg-cell/kgpolyurethane. Analyses of cell surface hydrophobicity by the microbial-adhesion-to-hydrocarbons test and contact angle measurements revealed that A. genospecies Tol 5 has a noteworthily hydrophobic cell surface compared with Escherichia coli. A TBAB inoculated with A. genospecies Tol 5 showed a sufficiently high ability in toluene elimination within 24 h after starting the operation without preliminary operation for immobilization, suggesting that this strain was effective to shorten the adaptation period, which had been considerably long on the TBAB inoculated with the original activated sludge.

show abstract

Section: Introductionmentioning

confidence: 99%

Isolation, Characterization and Application to Off-Gas Treatment of Toluene-Degrading Bacteria.

Hori

Yamashita

Ishii

et al. 2001

J. Chem. Eng. Japan

View full text Add to dashboard Cite

show abstract

“…This system may avoid some drawbacks of the biofilter, such as compaction, channeling, and filter degradation. [15][16][17] In a biotrickling filter, the nutrients and pH buffering agents can be easily added to the recirculated liquid. Acidic or alkaline products formed during the bioreaction can also be easily removed by replacing the recirculated liquid.…”

Section: Introductionmentioning

confidence: 99%

“…15,18,19 In the past decade, the increasing number of studies concerning the treatment of gas-stream contaminants by biotrickling filters have targeted contaminants such as hydrocarbons, oxygenated hydrocarbons, chlorinated hydrocarbons, and sulfur compounds. [15][16][17][18][19][20][21][22][23][24] 1,3-butadiene (or, briefly, butadiene), which is often used in manufacturing synthetic rubbers and resins, can be released from processing equipment and ducts. It is one of the 189 hazardous air pollutants listed in the 1990 Clean Air Act Amendments (CAAA).…”

Section: Introductionmentioning

confidence: 99%

Treatment of 1,3-Butadiene in an Air Stream by a Biotrickling Filter and a Biofilter

Chou

1998

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

This paper presents results obtained from a performance study on the biotreatment of 1,3-butadiene in an air stream using a reactor that consisted of a two-stage, inseries biotrickling filter connected with a three-stage, inseries biofilter. Slags and pig manure-based media were used as packing materials for the biotrickling filter and the biofilter, respectively. Experimental results indicated that, for the biotrickling filter portion, the butadiene elimination capacities were below 5 g/m /hr. The elimination rates of butadiene in both the biotrickling filter and biofilter were mass-transfer controlled for influent butadiene concentrations below about 600 ppm for superficial gas velocities of 29-142 m/hr. The elimination capacity was significantly higher in the biofilter than in the biotrickling filter. This discrepancy may be attributed to the higher IMPLICATIONS 1,3-butadiene is frequently used for manufacturing synthetic rubber and resin and can be released from processing equipment and ducts. It is one of the 189 hazardous air pollutants listed in the 1990 Clean Air Act Amendments. For treating such volatile organic compounds, biofilters and biotrickling filters are efficient. However, to our knowledge, the use of either approach for the biological treatment of 1,3-butadiene has not been investigated. This work analyzes the performance of biofilters and biotrickling filters for treating this target waste compound. The paper also provides data on the approximate elimination capacities and appropriate operating conditions for the biotreatment of olefins with low molecular weight.mass-transfer coefficient and gas-solid interfacial area offered for transferring the gaseous butadiene in the biofilter.

show abstract

“…[8][9][10][11][12] Bioprocesses for air pollution control, categorized as bioscrubber, biofilter, and biotrickling filter systems, have been traditionally limited to odors and volatile organic compounds. [13][14][15][16][17] A bioscrubber is a column in which a stream of activated-sludge-mixed liquor is sprayed so it comes into contact with an incoming air stream. Watersoluble contaminants in the air stream are absorbed into the mixed liquor and subsequently degraded by the microorganisms in a separate aeration tank.…”

mentioning

confidence: 99%

“…This system may avoid some drawbacks of the biofilter system, such as compaction, channeling, and filter degradation. [14][15][16][17] Basically, biotreatment of NO relies on the intimate contact of gaseous NO with the active denitrifying or nitrifying microorganisms in a bioreactor. Microbial denitrification is a process in which NO is sequentially reduced to N 2 O and N 2 .…”

mentioning

confidence: 99%

Biotrickling Filtration of Nitric Oxide

Chou

Lin

2000

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

A biotrickling filter with blast-furnace slag packings (sizes = 20-40 mm and specific surface area = 120 m 2 /m 3 ) was utilized to treat NO in an air stream. The operational stability, as well as the effects of gas empty-bed retention time (EBRT) and nutrient addition on the removal ability of NO, were tested. Approximately six weeks were required for the development of a biofilm for NO degradation, and a two-week organic carbon deficiency resulted in the detachment of biofilms from the packing surfaces. A steady removal rate of 80% was attained at specified influent NO concentrations of 892 to 1237 ppm and an EBRT of 118 sec. The effluent NO concentration diminished exponentially with enlarging EBRT, with influent NO concentrations of 203-898 ppm, and EBRTs of 25 to 118 sec. Nutrient addition is essential for efficient removal of the influent NO. Mass ratios of C: P: N = 7: 1: 30 and NaHCO 3 : NO-N = 6.3 could be used for practical applications.

show abstract

Biological purification of exhaust air using fixed bacterial monocultures

Cited by 46 publications

References 2 publications

Isolation, Characterization and Application to Off-Gas Treatment of Toluene-Degrading Bacteria.

Isolation, Characterization and Application to Off-Gas Treatment of Toluene-Degrading Bacteria.

Treatment of 1,3-Butadiene in an Air Stream by a Biotrickling Filter and a Biofilter

Biotrickling Filtration of Nitric Oxide

Contact Info

Product

Resources

About