Research Article

Cryptogamic Packed Biofilter as Potential Adsorbent for CO2, NH3, and H2S Impurities from Biogas

Table 4

Effect of soil mass and biogas flow rate on the biofilter T3 performance; H2S removal efficiencies are given as average values over 2-hour operating time.

Gas analyzedInitial concentration ()Flow rate, (ml min-1)RE (average over time) (%)
T3-100T3-150T3-200

CO236.4–40.0%8076.175.999.7
10068.671.199.7
NH37-13 ppm8072.473.350.0
10077.269.757.8
H2S498-836 ppm8093.397.796.7
10093.685.998.6