TY - JOUR
T1 - Optimization of nutrient supply in a downflow gas-phase biofilter packed with an inert carrier
AU - Prado, Ó J.
AU - Mendoza, J. A.
AU - Veiga, M. C.
AU - Kennes, C.
PY - 2002
Y1 - 2002
N2 - Several methodologies were tested to supply nutrients to a downflow biofilter packed with perlite and used to treat toluene-polluted air. Despite the presence of an inorganic carrier, elimination capacities of up to around 60 g/m3 per hour could be maintained when a basal medium, containing nitrogen, phosphorus and potassium, was supplied once every fortnight or even once a month rather than once a week. Experimental results also indicated that the addition of vitamins or trace minerals to the basal aqueous medium hardly improved biofilter performance. Furthermore, the nutrient supply could be combined with a biomass control strategy, using air sparging, without any adverse effect on biofilter performance compared to supplying nutrients alone, and limiting the accumulation of excess biomass on the packing material. The performance of the biofilter was not significantly affected by temperature fluctuations between 25 and 33°C.
AB - Several methodologies were tested to supply nutrients to a downflow biofilter packed with perlite and used to treat toluene-polluted air. Despite the presence of an inorganic carrier, elimination capacities of up to around 60 g/m3 per hour could be maintained when a basal medium, containing nitrogen, phosphorus and potassium, was supplied once every fortnight or even once a month rather than once a week. Experimental results also indicated that the addition of vitamins or trace minerals to the basal aqueous medium hardly improved biofilter performance. Furthermore, the nutrient supply could be combined with a biomass control strategy, using air sparging, without any adverse effect on biofilter performance compared to supplying nutrients alone, and limiting the accumulation of excess biomass on the packing material. The performance of the biofilter was not significantly affected by temperature fluctuations between 25 and 33°C.
UR - http://www.scopus.com/inward/record.url?scp=0036040299&partnerID=8YFLogxK
U2 - 10.1007/s00253-002-1028-2
DO - 10.1007/s00253-002-1028-2
M3 - Artículo
C2 - 12172627
SN - 0175-7598
VL - 59
SP - 567
EP - 573
JO - Applied Microbiology and Biotechnology
JF - Applied Microbiology and Biotechnology
IS - 4-5
ER -