Influence of the inlet load, EBRT and mineral medium addition on spore emission by Fusarium solani in the fungal biofiltration of hydrophobic VOCs
✍ Scribed by Alberto Vergara-Fernández; Sergio Hernández; Raúl Muñoz; Sergio Revah
- Book ID
- 102314402
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2012
- Tongue
- English
- Weight
- 327 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0268-2575
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✦ Synopsis
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 m -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 g m -3 reactor h -1 , a maximum EC of 110 g m -3 reactor h -1 associated with a spore emission of 1.8 × 10 4 CFU m -3 air was recorded. The critical inlet load for 90% n-pentane removal was 50 g m -3 reactor h -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 reactor 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 mg biomass g -1 vermiculite ).