Influence of the inlet load, EBRT and mineral medium addition on spore emission by Fusarium solani in the fungal biofiltration of hydrophobic VOCs

Authors

  • Alberto Vergara-Fernández,

    Corresponding author
    1. Centro de Energías Renovables y Calidad Ambiental, Escuela de Ingenieria de Procesos Industriales, Facultad de Ingeniería, Universidad Católica de Temuco, Casilla 15-D, Temuco, Chile
    • Centro de Energías Renovables y Calidad Ambiental, Escuela de Ingenieria de Procesos Industriales, Facultad de Ingeniería, Universidad Católica de Temuco, Rudecindo Ortega 02950, Campus Norte, Casilla 15-D, Temuco, Chile.
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  • Sergio Hernández,

    1. Departamento de Ingeniería de Procesos e Hidráulica (IPH), Universidad Autónoma Metropolitana-Iztapalapa, México D.F., México
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  • Raúl Muñoz,

    1. Departamento de Ingeniería Química y Tecnología del Medio Ambiente. Universidad de Valladolid, 47011 Valladolid, Spain
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  • Sergio Revah

    1. Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana-Cuajimalpa, México D.F., México
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  • Presented at the IVth International Conference on Biotechniques for Air Pollution Control (Biotechniques-2011).

Abstract

BACKGROUND: The effect of the inlet n-pentane load (IL), empty bed residence time (EBRT) and mineral medium (MM) addition on spore emission and elimination capacity (EC) was evaluated using the fungus Fusarium solani in a vermiculite-based biofilter.

RESULTS: When the process was operated at an EBRT of 3.7 min and an IL of 100 g mequation image h−1, the weekly addition of MM from 6.8 to 13.6 mLMM Lequation image resulted in fluctuacting dynamics of ECs and spore emission.

When varying the n-pentane IL from 25 to 875 g mequation image h−1, a maximum EC of 110 g mequation image h−1 associated with a spore emission of 1.8 × 104 CFU mequation image was recorded. The critical inlet load for 90% n-pentane removal was 50 g mequation image h−1 with spore emission 4.5 × 103 CFU mequation image. Finally, when the EBRT was decreased from 3.7 to 2.1 min at a constant n-pentane IL of 50 g mequation image h−1 the EC decreased by 110%.

CONCLUSIONS: The results show a poor performance of the n-pentane biofiltration system at high IL and low EBRT, which was further confirmed by the low final biomass concentrations in the biofilter (62 mgbiomass gequation image). Copyright © 2012 Society of Chemical Industry

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