Fungal removal of gaseous hexane in biofilters packed with poly(ethylene carbonate) pine sawdust or peat composites
Por:
Hernández-Meléndez O., Bárzana E., Arriaga S., Hernández-Luna M., Revah S.
Publicada:
1 ago 2008
Resumen:
The removal of volatile organic compounds (VOC) in biofilters packed with organic filter beds, such as peat moss (PM) and pine sawdust (PS), frequently presents drawbacks associated to the collapse of internal structures affecting the long-term operation. Poly(ethylene ether carbonate) (PEEC) groups grafted to these organic carriers cross linked with 4,4'-methylenebis(phenylisocyanate) (MDI) permitted fiber aggregation into specific shapes and with excellent hexane sorption performance. Modified peat moss (IPM) showed very favorable characteristics for rapid microbial development. Water-holding capacity in addition to hexane adsorption almost equal to the dry samples was obtained. Pilot scale hexane biofiltration experiments were performed with the composites after inoculation with the filamentous fungus Fusarium solani. During the operation of the biofilter under non-aseptic conditions, the addition of bacterial antibiotics did not have a relevant effect on hexane removal, confirming
Filiaciones:
Hernández-Meléndez O.:
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Bárzana E.:
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Arriaga S.:
División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, Mexico
Hernández-Luna M.:
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Revah S.:
Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana-Cuajimalpa, No. 186, c/o IPH UAM-Iztapalapa, Av. San Rafael Atlixco, 09340 México, D.F., Mexico
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