313 (Biotrickling filter, BTF) (Biotrickling filter, BTF) Estrada , 2012 (Packed bed columns 1- 20 - 6-7.5 2-3) (Fortuny , 2011) 500 10,000 80- 100 6.4 2-16 Gabriel Deshusses, 2003 120 2,000 Fortuny , 2011 40 220 2-41