Posted inEnvironmentMurky WatersWater Watch Wisconsin

Manure digesters seen as best hope for curbing lake pollution, but drawbacks remain

Since 2001, manure digesters have been popping up across the state. Wisconsin now has 34, the most in the nation, with two more scheduled to begin operating by 2015. In all these digesters, bacteria eat biomass like manure, food scraps or whey and emit energy in the form of methane gas.