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280   Biofuels for a More Sustainable Future


          blending characteristics and their compatibility with the current infrastructure
          of fossil fuels (Eisentraut et al., 2011; European Biofuels Technology Plat-
          form (EBTP), n.d.). In BSC design, the compatibility of biofuel to existing
          infrastructure needs to be considered and investigated.


          3 Multiple decision levels in BSC modeling

          BSC design involves a large number of decisions related to biomass pro-
          duction, biomass conversion, and biofuel production and distributions
          to end-use customers. Depending on the complexity, scales (e.g., different
          geographic and temporal scales), objectives (e.g., maximize economic
          benefits), different decisions need to be made during BSC design. Based
          on decision timeframe and complexity, those decisions can be categorized
          into strategic, tactical, and operational decisions.

          3.1 Strategic decisions
          Strategic decisions commonly refer to long-term decisions that are hard to
          be changed or modified in a short period (e.g., supply chain network design,
          locations of biorefineries, the number of preprocessing plants) (Yue et al.,
          2014). Generally, strategic decisions in BSC design include the following
          aspects:
          • Resource utilization and allocation. Selecting suitable types of biomass and
            allocating the resources to meet the demand of biorefineries are critical
            to design robust and cost-effective BSC (Sharma et al., 2013). Those deci-
            sions commonly involve selecting biomass types (Avami, 2013), allocating
            biomass resources (Akgul et al., 2012a), and selecting biomass supply sites
            (Lin et al., 2012; Palak et al., 2014). Those decisions are typically made
            based on factors related to biomass prices, biomass availability, and feed-
            stock quality.
          • Supply chain network design. Transporting low energy density biomass
            across large areas can be expensive and time-consuming, making the
            transportation network design crucial to overall effectiveness of BSC
            (Yue and You, 2016). For transportation network design, decisions need
            to be made on selecting biomass suppliers, locations, capacities of each
            operational facility (e.g., preprocessing plants and biorefineries), trans-
            portation modes, and related distribution channels. The design of a
            transportation network always needs to be tailored to regional contexts
            given the large variation in infrastructures (e.g., road routes) and vehicles
            (e.g., load limits).
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