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Methanogenic and perchloroethylene-dechlorinating activity of anaerobic granular sludge
(Springer, 1998-10)
The biodegradation and toxicity of tetrachloroethylene (C2Cl4) and trichloroethylene (C2HCl3) were studied with different anaerobic enrichment cultures using the following electron donors: acetate, propionate, butyrate, ...
Biofilter performance and characterization of a biocatalyst degrading alkylbenzene gases
(2009-06)
A biofilter treating alkylbenzene vapors was characterized for its optimal running conditions and kinetic parame-ters. Kinetics of the continuous biofilter were compared to batch kinetic data obtained with biofilm samples ...
Parameters affecting performance and modeling of biofilters treating alkylbenzene-polluted air
(Springer, 2001-03)
Both short-term and long-term biofiltration experiments were undertaken with a biofilter inoculated with a defined microbial consortium and treating an alkylbenzene mixture. The results obtained with such a biofilter in ...
Characterization of absorbent polymers for the removal of volatile hydrophobic pollutants from air
(Wiley-Blackwell, 2011-01)
An emerging innovation for the treatment of polluted air consists in using a liquid–solid biphasic system, in which the sequestering phase contains inert polymer beads. The different polymers tested here for this purpose ...
Effect of salinity on C1-gas fermentation by "Clostridium carboxidivorans" producing acids and alcohols
(Springer Nature, 2019-07-17)
[Abstract] Clostridium carboxidivorans can produce acids and/or alcohols through syngas fermentation. In that C1-gas fermentation process, the production of acids takes place at higher pH (acetogenesis) (e.g., around 6.00), ...
Biofiltration of waste gases with the fungi Exophiala oligosperma and Paecilomyces variotii
(Springer, 2005-06)
Two biofilters fed toluene-polluted air were inoculated with new fungal isolates of either Exophiala oligosperma or Paecilomyces variotii, while a third bioreactor was inoculated with a defined consortium composed of both ...
Experimental and neural model analysis of styrene removal from polluted air in a biofilter
(Wiley-Blackwell, 2009-07)
BACKGROUND: Biofilters are efficient systems for treating malodorous emissions. The mechanism involved during pollutant transfer and subsequent biotransformation within a biofilm is a complex process. The use of artificial ...
Biofiltration of waste gases containing a mixture of formaldehyde and methanol
(Springer, 2004-04)
Several biofilters and biotrickling filters were used for the treatment of a mixture of formaldehyde and methanol; and their efficiencies were compared. Results obtained with three different inert filter bed materials (lava ...
Biological conversion of carbon monoxide to ethanol: Effect of pH, gas pressure, reducing agent and yeast extract
(Elsevier, 2012-06)
A two-level full factorial design was carried out in order to investigate the effect of four factors on the bioconversion of carbon monoxide to ethanol and acetic acid by Clostridium autoethanogenum: initial pH (4.75–5.75), ...
Coliform concentration reduction and related performance evaluation of a down-flow anaerobic fixed bed reactor treating low-strength saline wastewater
(Elsevier Sciencie lted, 2004-09)
Low-strength saline wastewater may be generated by tourist facilities, industries and communities located in coastal areas. Sea salts, mostly chlorides, when present in wastewaters at high concentrations, can cause inhibition ...