Browsing by Research Group "Bioenxeñaría Ambiental e Control de Calidade (BIOENGIN)"
Now showing items 1-20 of 107
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A Comparative Study of Physical and Chemical Processes for Removal of Biomass in Biofilters
(MDPI, 2011-08)After 6 months of operation a long-term biofilter was stopped for two weeks and then it was started up again for a second experimental period of almost 1.3 years, with high toluene loads and submitted to several physical ... -
Accumulation of Lipids by the Oleaginous Yeast Yarrowia Lipolytica Grown on Carboxylic Acids Simulating Syngas and Carbon Dioxide Fermentation
(Elsevier, 2022-07-19)[Abstract] Volatile fatty acids (VFAs) can be considered as low-cost carbon substrates for lipid accumulation by oleaginous yeasts. This study demonstrates that a common mixture of VFAs, typically obtained from the anaerobic ... -
Advances in the development of electrode materials for improving the reactor kinetics in microbial fuel cells
(Elsevier, 2021-12-07)[Abstract] Microbial fuel cells (MFCs) are an emerging technology for converting organic waste into electricity, thus providing potential solution to energy crises along with eco-friendly wastewater treatment. The electrode ... -
Application of Anaerobic and Ozonation Processes in the Landfill Leachate Treatment
(IWA Publishing, 2006)The optimization of leachate treatment was investigated as well as the configuration of a biological-ozonation process. The leachate used for the experiments was diluted to 1/5 with tap water and treated anaerobically. The ... -
Autotrophic (C₁-Gas) Versus Heterotrophic (Fructose) Accumulation of Acetic Acid and Ethanol in Clostridium Aceticum
(Elsevier, 2021-07-03)[Abstract] The influence of the carbon source on the metabolism and growth of Clostridium aceticum was investigated, supplying either CO or fructose as sole carbon source. The acid and solvent production patterns were ... -
Autotrophic deodorization of hydrogen sulfide in a biotrickling filter
(Wiley-Blackwell, 2005-09)The removal of hydrogen sulfide (H2S) from airstreams was studied in a biotrickling filter (BTF) packed with plastic Pall rings operating with counter-current flows of the air and liquid streams. Experiments were performed ... -
Autotrophic production of polyhydroxyalkanoates using acidogenic-derived H2 and CO2 from fruit waste
(Elsevier, 2023)[Abstract] The environmental concerns regarding fossil plastics call for alternative biopolymers such as polyhydroxyalkanoates (PHAs) whose manufacturing costs are however still too elevated. Autotrophic microbes like ... -
Bioconversion processes
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Biodegradation and effect of formaldehyde and phenol on the denitrification process
(Elsevier, 2005)Formaldehyde and phenol biodegradation during the denitrification process was studied at lab-scale, first in anoxic batch assays and then in a continuous anoxic reactor. The biodegradation of formaldehyde (260 mg l−1) as ... -
Biodegradation of BTEX in a fungal biofilter: Influence of operational parameters, effect of shock-loads and substrate stratification
(Elsevier, 2012-07)The effect of relative humidity (RH: 30% to >95%) of a gas-phase mixture composed of benzene, toluene, ethylbenzene and para-, meta- and ortho-xylenes (BTEX), inlet concentrations (0.2–12.6 g m−3), and empty bed residence ... -
Biodegradation of gas-phase styrene using the fungus Sporothrix variecibatus: Impact of pollutant load and transient operation
(Elsevier, 2010-03)Biofiltration of gas-phase styrene was studied using a newly isolated fungus Sporothrix variecibatus, in a perlite biofilter, at inlet concentrations and gas-flow rates ranging from 0.13 to 14 g m−3 and 0.075 to 0.34 m3 ... -
Biodegradation of toluene by the new fungal isolates Paecilomyces variotii and Exophiala oligosperma Biotechnology. 2005;32(1):33-7
(Springer, 2005-02)Two new fungal strains, namely Paecilomyces variotii and Exophiala oligosperma, were isolated on toluene as the sole carbon and energy source, mineralizing the substrate into carbon dioxide. Fungal strains isolated so far ... -
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 ... -
Biofiltration of mixtures of gas-phase styrene and acetone with the fungus Sporothrix variecibatus
(Elsevier, 2010-12)The biodegradation performance of a biofilter, inoculated with the fungus Sporothrix variecibatus, to treat gas-phase styrene and acetone mixtures under steady-state and transient conditions was evaluated. Experiments were ... -
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 ... -
Biofiltration of waste gases in a reactor with a split-feed
(Wiley-Blackwell, 2003-06)The efficiency of using different feed strategies was evaluated in the case of a gas-phase biofilter packed with an inert carrier material. During a preliminary control-period, the biofilter was first fed with a single ... -
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 ... -
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), ... -
Biological conversion of carbon monoxide: rich syngas or waste gases to bioethanol
(Wiley-Blackwell, 2011)Bioconversion of syngas/waste gas components to produce ethanol appears to be a promising alternative compared to the existing chemical techniques. Recently, several laboratory-scale studies have demonstrated the use of ... -
Biological treatment of industrial wastewater containing formaldehyde and formic acid.
(South African Water Research Comission, 2006-01)The biological treatment of wastewater from an aminoplastic resin-producing industry was studied in a pre-denitrifica- tion system. This study reports results on the removal of organic matter and nitrogen compounds from ...
