Focusing on maximum resource recovery from manure could simultaneously produce multiple high-value commodities while addressing environmental concerns.
Valuable energy products can be made from dairy manure. However, current manure management strategies don’t fully recover valuable organic matter and are ineffective in handling greenhouse gas (GHG) emissions or removing nutrients. Focusing on maximum resource recovery from manure could simultaneously produce multiple highvalue commodities while addressing environmental concerns. An LDRD project supported by more than a dozen off-campus university students studied two novel processes for optimizing conversion of Idaho dairy manure into energy products. The first process maximized conversion to methane, while the second sequestered anaerobic digestion emissions to produce lipid-rich algae that can be converted to biofuels. A life cycle analysis of the system revealed significant GHG reduction.