Optimization of lignocellulosic biomass-to-biofuel supply chains with mobile pelleting

Mobile pelleting machines (MPMs) provide an as-yet-unexplored opportunity to reduce logistic costs associated with biomass-to-biofuel supply chains We develop an optimization model to minimize the overall cost of producing ethanol from lignocellulosic biomass. We present results from a case study that considers multiple biomass types (switchgrass and corn stover) and forms (round and rectangular bales) and the potential for mobile pelleting. Our analyses offer insight into conditions under which mobile densification is economically viable. Results indicate that MPM utilization is sensitive to changes in biomass densification costs, transportation distances, satellite storage location fixed cost, and the number of MPMs.