Advancing Utilization of Manure Methane Digester�

Funding for this project was recommended by the Legislative Commission on Minnesota Resources

from the Minnesota Environment and Natural Resources Trust Fund ($204, 375)�

Haubenschild Dairy Farm Energy Production�

Princeton, Minnesota�

Milk Production + Crop Production +

Electrical Production + Future Hydrogen

Production

=

Farm Income Diversification

Challenges to using biogas

for a fuel cell ��Hydrogen sulfide removal

��Initial concentration 3000-5000 ppm

��Need concentration < 25 ppb

��Moisture removal

��Need dry gas

��Dewpoint < -30 degrees Celsius

��Carbon dioxide removal

��Need concentration < 5 ppm

Emissions from Haubenschild Generator

Compared to Plug Power™

Proton Exchange Membrane (PEM) Fuel Cell

�� ( 799ppmv) 4.18 g/kWh

�� (2963 ppmv) 25.5 g/kWh

�� (277 ppmv) 3.34 g/kWh

�� (2.46 %) 53 g/kWh

�� ( <1 ppmv) 0.014 g/kWh

�� (<1 ppmv) <.0023 g/kWh

�� (<1 ppmv) <0.030 g/kWh

�� (<1%) 14.5 g/kWh

Fuel Cell Engine Generator

CO

NOx

SOX

CX HY