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

Alberto Vergara, Sergio Hernández, Raúl Muñoz, Sergio Revah

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

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 gm -3 reactor h -1, the weekly addition of MM from 6.8 to 13.6 mL MM L -1 vermiculite resulted in fluctuacting dynamics of ECs and spore emission. When varying the n-pentane IL from 25 to 875 gm -1 reactor h -1, a maximum EC of 110 gm -3 reactor h -1 associated with a spore emission of 1.8 × 10 4 CFU m -1 air was recorded. The critical inlet load for 90% n-pentane removal was 50 g m -3 reactorh -1 with spore emission 4.5 × 10 3 CFU m -3 air Finally, when the EBRT was decreased from 3.7 to 2.1 min at a constant n-pentane IL of 50 g m -3 reactorh -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 mg biomass g biomass g -1 vermiculite).

Original languageEnglish
Pages (from-to)778-784
Number of pages7
JournalJournal of Chemical Technology and Biotechnology
Volume87
Issue number6
DOIs
StatePublished - Jun 2012
Externally publishedYes

Keywords

  • Fungal biofiltration
  • Fusarium solani
  • Hydrophobic VOCs
  • Spore emission

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