Biofuels
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| ANAEROBIC PHASED SOLIDS (APS) DIGESTOR SYSTEMS |
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Biogas
The Production of Biofuels with the APS Digester
Biohydrogen and biomethane are two types of gaseous biofuels that the APS digester produces from organic wastes.
The biogas produced is a medium quality fuel ranging in energy value from 580 to 650 Btu per standard cubic foot,
which is approximately 65% of the energy value of pipeline natural gas.
During the conversion of waste to biogas, approximately 20 to 25 % of the energy produced can be in the form of
biohydrogen, with the remaining energy in the form of biomethane. This separate co-production of biohydrogen and
biomethane yields biofuels for specific uses and by blending the two gases; the formation of one efficient burning
blended-biofuel is attained.
The biohydrogen may operate fuel cells or hydrogen internal combustion engines (HICE). When the demand for
biohydrogen may be low, the two biofuels may be mixed to produce a clean burning biofuel to operate standard
internal combustion engines and the remaining biomethane may be compressed to fuel compressed natural gas
(CNG) engines. Additional processing will yield pipeline quality natural gas.
The Production of Biofuels with the APS Digester
Biohydrogen and biomethane are two types of gaseous biofuels that the APS digester produces from organic wastes.
The biogas produced is a medium quality fuel ranging in energy value from 580 to 650 Btu per standard cubic foot,
which is approximately 65% of the energy value of pipeline natural gas.
During the conversion of waste to biogas, approximately 20 to 25 % of the energy produced can be in the form of
biohydrogen, with the remaining energy in the form of biomethane. This separate co-production of biohydrogen and
biomethane yields biofuels for specific uses and by blending the two gases; the formation of one efficient burning
blended-biofuel is attained.
The biohydrogen may operate fuel cells or hydrogen internal combustion engines (HICE). When the demand for
biohydrogen may be low, the two biofuels may be mixed to produce a clean burning biofuel to operate standard
internal combustion engines and the remaining biomethane may be compressed to fuel compressed natural gas
(CNG) engines. Additional processing will yield pipeline quality natural gas.