Caye Drapcho, Ph.D., is an Associate Professor in the Biosystems Engineering program, Department of Environmental Engineering and Earth Sciences at Clemson University. Nhuận Phú Nghiêm, Ph.D., is a Research Chemical Engineer/Lead Scientist in the Sustainable Biofuels and Co-Products Research Unit, Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, and is an Adjunct Professor in the Biosystems Engineering program, Department of Environmental Engineering and Earth Sciences at Clemson University. Terry H. Walker, Ph.D., is a Professor in the Biosystems Engineering program in the Department of Environmental Engineering and Earth Science at Clemson University.