TY - JOUR
T1 - Biofiltration of Methane from Ruminants Gas Effluent Using Autoclaved Aerated Concrete as the Carrier Material
AU - Ganendra, Giovanni
AU - Mercado-Garcia, Daniel
AU - Hernandez-Sanabria, Emma
AU - Peiren, Nico
AU - De Campeneere, Sam
AU - Ho, Adrian
AU - Boon, Nico
N1 - 5851, ME, 24 mnd embargo AM; Data Archiving: no data
PY - 2015
Y1 - 2015
N2 - Abstract The performance of Methane-Oxidizing Bacteria (MOB) immobilized on Autoclaved Aerated Concrete (AAC) in a biofilter setup to remove methane from ruminants gas effluent was investigated. Two dairy cows were housed in respiration chambers for two days where the exhaust gas from the chambers was used as the biofilter feed. MOB consumed methane at an average Removal Efficiency (RE) of 17.5% and Elimination Capacity of 67.3 g m-3 d-1. Several factors that might cause this low RE are the: (a) low methane inlet concentration (average concentration = 61.9 ppmv), (b) presence of ammonia in the inlet gas (average concentration = 1.54 ppmv), (c) the high gas feed flow rate (1.2 m3 h-1), and (d) the lowering humidity level in the biofilter (average RE = 15.9%). By using AAC as the carrier material, carbon dioxide was removed in the biofilter by the likely carbonation reaction with AAC (average RE = 4.02%). Thus, complete carbon sequestration from the converted methane was obtained. Overall, our results showed that an environmentally friendly methane biofilter process could be achieved when using ACC as the carrier material.
AB - Abstract The performance of Methane-Oxidizing Bacteria (MOB) immobilized on Autoclaved Aerated Concrete (AAC) in a biofilter setup to remove methane from ruminants gas effluent was investigated. Two dairy cows were housed in respiration chambers for two days where the exhaust gas from the chambers was used as the biofilter feed. MOB consumed methane at an average Removal Efficiency (RE) of 17.5% and Elimination Capacity of 67.3 g m-3 d-1. Several factors that might cause this low RE are the: (a) low methane inlet concentration (average concentration = 61.9 ppmv), (b) presence of ammonia in the inlet gas (average concentration = 1.54 ppmv), (c) the high gas feed flow rate (1.2 m3 h-1), and (d) the lowering humidity level in the biofilter (average RE = 15.9%). By using AAC as the carrier material, carbon dioxide was removed in the biofilter by the likely carbonation reaction with AAC (average RE = 4.02%). Thus, complete carbon sequestration from the converted methane was obtained. Overall, our results showed that an environmentally friendly methane biofilter process could be achieved when using ACC as the carrier material.
KW - Livestock methane emission mitigation
KW - Methane biofilter
KW - Methane-Oxidizing Bacteria
KW - Autoclaved Aerated Concrete
KW - Carbon sequestration
KW - international
U2 - 10.1016/j.cej.2015.04.128
DO - 10.1016/j.cej.2015.04.128
M3 - Article
SN - 1385-8947
VL - 277
SP - 318
EP - 323
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -