RT info:eu-repo/semantics/article
T1 Biofiltration based on bioactive coatings for the abatement of indoor air VOCs
A1 González Martín, Javier
A1 Cantera Ruiz de Pellón, Sara
A1 Lebrero Fernández, Raquel
A1 Muñoz Torre, Raúl
K1 Biofiltration
K1 Indoor air quality
K1 Biofiltración
K1 Calidad del aire interior
K1 23 Química
AB Biotechnologies are a feasible alternative for indoor air pollutant abatement. Among biotechnologies, bioactive coatings consist of microorganisms embedded in polymeric matrices, allowing a direct contact between microorganisms and gas pollutants, thus enhancing their abatement. Three bioreactors (BR1, BR2 and BR3) were inoculated with a VOC-degrading enriched culture, a latex bioactive coating with the VOC-degrading enriched culture, and a latex bioactive coating with fresh activated sludge. The influence of empty bed residence time (EBRT) and inlet concentrations on the removal of toluene, α-pinene and n-hexane was assessed. BR1 and BR2 achieved steady-state toluene and pinene removals >90% down to 30 s. BR3 lower removals could be attributed to the lack of acclimation of activated sludge. When inlet concentrations were progressively reduced to <2 mg m−3 at 15 s of EBRT, toluene removals increased to >80% in BR1 and BR2, but only to 64.2% in BR3. Pinene removals reached 90.9% in BR1, and >70% in BR2 and BR3. The bacterial population was dominated by Rhodococcus, Mycobacterium, Devosia and Rhodobacteraceae members in BR1 and BR2. No significant and robust hexane removal was observed regardless of the inoculum or operational conditions, probably due to mass transfer limitations, which entailed a low dominance of organisms with this metabolic capability.
PB Elsevier
SN 2352-5541
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/58484
UL https://uvadoc.uva.es/handle/10324/58484
LA eng
NO Sustainable Chemistry and Pharmacy,  Volume 31, 2023, 100960
NO Producción Científica
DS UVaDOC
RD 23-may-2024