A highly successful biogas project on a Minnesota 800-cow dairy has been operating for 5 yr. The emissions of a conventional combustion engine coupled with an induction generator (genset) producing electricity for the grid was compared with a fuel cell using the same biogas. The emissions of NOx, CO, THC, and SO2 from the fuel cell were much less than from the engine generator. The pressure swing absorber gas cleanup process, prior to introducing the gas to the fuel cell, removed almost all (15 ppm H2S remains of original 5000 ppm) of the critical contaminant gas. The CO2 was decreased from 40 to 10%. A biofilter would be used to collect and recycle the H2S into the soil along with the filter material. The biofilter is not expected to sequester the CO2 and that would be ultimately released to the local atmosphere. This is an abstract of a paper presented at the 98th AWMA Annual Conference and Exhibition (Minneapolis, MN 6/21-24/2005).
|Original language||English (US)|
|Title of host publication||Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA|
|State||Published - 2005|
|Event||Air and Waste Management Association's - 98th annual Conference and Exhibition - Minneapolis, MN, United States|
Duration: Jun 21 2005 → Jun 24 2005
|Other||Air and Waste Management Association's - 98th annual Conference and Exhibition|
|Period||6/21/05 → 6/24/05|