TY - JOUR
T1 - Fungal biofiltration of toluene on ceramic rings
AU - Aizpuru, Aitor
AU - Dunat, Bertrand
AU - Christen, Pierre
AU - Auria, Richard
AU - García-Pena, Inés
AU - Revah, Sergio
PY - 2005/3
Y1 - 2005/3
N2 - Fungal biofilters attain higher toluene elimination rates compared to bacterial systems. However, strong mycelia growth can cause clogging. In the present work, toluene biofiltration with the fungus Paecilomyces variotii CBS 115145 was tested with two rigid packing materials that allow high mycelia growth. The reactor had two 4.25 L sections, each packed with ceramic Raschig rings differing in water retention capacity and internal porosity. After optimizing nutrient solution delivery, an overall maximum elimination capacity of 245 g/m3/h was obtained. Higher elimination capacity (290 g/m3/h) was measured in the ceramic ring with lower water content, indicating the interest of such packing material for treating hydrophobic pollutants in fungal biofilters. Additional experiments with this support in a 2 L biofilter showed bacterial contamination, but the fungal activity was responsible for about 70% of the total removal. The support with less humidity showed greater aerial growth, which possibly improves removal efficiency by favoring the direct transfer of pollutants from the gas phase to the microorganism.
AB - Fungal biofilters attain higher toluene elimination rates compared to bacterial systems. However, strong mycelia growth can cause clogging. In the present work, toluene biofiltration with the fungus Paecilomyces variotii CBS 115145 was tested with two rigid packing materials that allow high mycelia growth. The reactor had two 4.25 L sections, each packed with ceramic Raschig rings differing in water retention capacity and internal porosity. After optimizing nutrient solution delivery, an overall maximum elimination capacity of 245 g/m3/h was obtained. Higher elimination capacity (290 g/m3/h) was measured in the ceramic ring with lower water content, indicating the interest of such packing material for treating hydrophobic pollutants in fungal biofilters. Additional experiments with this support in a 2 L biofilter showed bacterial contamination, but the fungal activity was responsible for about 70% of the total removal. The support with less humidity showed greater aerial growth, which possibly improves removal efficiency by favoring the direct transfer of pollutants from the gas phase to the microorganism.
KW - Air pollution
KW - Biological treatment
KW - Ceramics
KW - Filtration
KW - Pollution control
KW - Volatile organic chemicals
UR - http://www.scopus.com/inward/record.url?scp=14644401136&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)0733-9372(2005)131:3(396)
DO - 10.1061/(ASCE)0733-9372(2005)131:3(396)
M3 - Artículo
SN - 0733-9372
VL - 131
SP - 396
EP - 402
JO - Journal of Environmental Engineering
JF - Journal of Environmental Engineering
IS - 3
ER -