New Green Product Category WINNER: Baton Rouge PDC Renewable Feedstock PAC Sorbents for Emission Control (Emma Zhou, Yin Zhang, Kara Thalls and Ron Landreth) – By using coconut shells—a renewable feedstock (RF)—as the carbon source for producing powdered activated carbon (PAC) sorbents, RF-PAC effectively ends the history of for mercury control in North America.