A future bio-based economy envisions the transformation of the petrochemical industry into using biomass such as wood (waste) as a major resource. The early-stage evaluation of a biorefinery project requires the optimization of the lay-out of the supply chain considering the spatio-temporal variability of the availability of feedstock and the techno-economical characteristics of the biorefinery process. Therefore, the presented methodology was developed combining three models: (1) a forest management and planning tool providing a detailed prediction on the wood resource availability as well as the harvested feedstock quantity and cost with respect to location and time, (2) a techno-economic assessment model of the biorefinery process (e.g., species-specific conditions, capacity, CAPEX, OPEX), and (3) a strategic supply chain optimization model combining the insights of (1) and (2) into a spatio-temporal explicit supply chain analysis. The developed methodology has been evaluated through a case-study on the emerging reductive catalytic fractionation (RCF) biorefining in the Flanders region (EU) and shows that the most economically interesting configuration is one large biorefinery with a yearly wood chip intake of 150 kton. The biorefinery location reflects the available feedstock distribution in Flanders and is suggested to be situated best in the most forested region. The proposed methodology proved to be dynamic and robust: (1) input data and technical calculations can easily be adapted or updated; (2) the methodology can be applied to a broad range of applications beyond the scope of the biorefinery, to different feedstock choices; (3) the impact of the biorefinery location on e.g. energy balance, CO2 emissions, and financial balance can be assessed.
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RBINS Staff Publications 2024
Locality HK29A at Predynastic Hierakonpolis has been identified as a ceremonial center based on archaeological, architectural and macrobotanical data, although alternative functions as a feasting or butchery site have also been proposed. Animal bone assemblages excavated at the locality in the 1980s and in 2002 have been studied and are compared in detail to those from other localities at Hierakonpolis, as well as from other Predynastic sites in Upper and Lower Egypt. The comparisons show that HK29A shares several features with other Upper Egyptian sites, which can be related to their similar ecological settings. The fauna from Hierakonpolis settlement localities in general, including HK29A, show some peculiarities that distinguish them from other Predynastic sites in Upper Egypt, which may be explained by the status of the site as a large and powerful center. More importantly, the comparisons clearly show that the fauna from HK29A has some unique features not shared with any other locality at Hierakonpolis. They are argued to reflect a variety of symbolic roles that animals had, which probably changed throughout the period of use of the locality. Moreover, the faunal remains testify of the high social status of the people taking part in the clearly special activities at HK29A.
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