Wastewater biosolids are fertilizing sunflower for biodiesel in Raleigh pilot trial
In North Carolina, biosolids from a wastewater plant outside Raleigh are spread upon a nearby 50-acre field where sunflower is grown for biodiesel production. Using the nitrogen-hungry plants reduces runoff into the watershed that can lead to algae blooms and eventually fish kill. In the second year of the pilot, the City will crush the […]