The U.S. Department of Energy’s Argonne National Laboratory and the sustainable energy NGO Energy Vision released two case studies of successful projects that were among the first to produce Renewable Compressed Natural Gas (R-CNG) vehicle fuel using anaerobic digesters to capture biogases from decomposing organic waste.
Energy Vision and Argonne produced the studies jointly. One study looks at Fair Oaks Farms, an Indiana dairy cooperative with roughly 36,000 cows. It converts manure to R-CNG using a large anaerobic digester, and uses the fuel to power its milk tanker trucks. The other study assesses the Sacramento BioDigester, the first food-waste digester in California to turn commercial organic waste into R-CNG vehicle fuel using anaerobic digestion.
“These projects are trail blazers, and their experience bodes well for the future of renewable natural gas,” said Matt Tomich, president of Energy Vision. “Their success can serve as models for other places with large organic waste streams, which is virtually every urban and rural setting in the country.”
“R-CNG can achieve the greatest GHG reductions of any transportation fuel today — 70% or more as compared to gasoline or diesel,” said Marianne Mintz of Argonne National Laboratory’s Energy System Division.
Source: Energy Vision