Temperature and moisture effect on spore emission in the fungal biofiltration of hydrophobic VOCs

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Autor:
Vergara Fernández, Alberto - Salgado-Ismodes, Vanida - Pino, Miguel - Hernandez, Sergio - Revah, Sergio
URI:
http://repositoriodigital.uct.cl/handle/10925/3247
Datos de publicación:
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING,Vol.47,605-613,2012
Temas:
Moisture - temperature - spore emission - Fusarium solani - fungal biofiltration - hydrophobic VOCs
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Resumen:
The effect of temperature and moisture on the elimination capacity (EC), CO2 production and spore emission by Fusarium solani was studied in biofilters packed with vermiculite and fed with n- pentane. Three temperatures (15, 25 and 35 degrees C) were tested and the highest average EC (64 g m(-3) h(-1)) and lower emission of spores (2.0 x 10(3) CFU m(-3) air) were obtained at 25 degrees C. The effect of moisture content of the packing material indicates that the highest EC (65 g m(-3) h(-1)) was obtained at 50% moisture. However, lowest emission (1.3 x 10(3) CFU m(-3) air) was obtained at 80% moisture. Furthermore, the results show that a slight decrease in spore emission was found with increasing moisture content. In all cases, the depletion of the nitrogen source in the biofilter induced the sporulation, a decay of the EC and increased spore emission.

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