CO_2 Capture and Storage (CCS) on small sources, like most of the biomass sources,has gained little interest compared to large fossil-fuel ones. However, the application ofCCS to biomass facilities (BCCS) would lead to lower or negative emissions which canreduce its cost. In this paper we study the option of adding CCS on a bioethanol plant.The objective is to study the influence of key factors that affect bioethanol-CCSprofitability: choice of the capture source (fermentation or/and cogeneration), productionvolumes, storage site injectivity and climate policy stringency. The tools used here are:the mitigation cost and the discount cash flow method. In this application, we showedthat, capturing on fermentation only is always the most profitable option. With a strictpolicy (450ppm), capturing on fermentation or on fermentation and cogeneration iseconomically viable when the ethanol production volumes exceed 1.4 million of hectoliterper year. The injectivity is an influent factor as it can allow economies of scale on thestorage stage when larger volumes are considered. Finally, the climate policy stringencyhas a strong impact on bioethanol-CCS profitability. For a 550ppm target, capturing onfermentation and cogeneration is never economically viable no matter the volumesproduced.
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