Bio-Carbon Accounting for Bio-Oil Co-Processing [electronic resource] : <sup>14</sup>C and <sup>13</sup>C/<sup>12</sup>C

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Ngôn ngữ: eng

Ký hiệu phân loại: 668.5 Perfumes and cosmetics

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2016

Mô tả vật lý: Size: 21 p. : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 264632

 This is a powerpoint presentation on bio-carbon accounting for bio-oil co-processing. Because of the overlapping range in the stable C isotope compositions of fossil oils and biooils from C3-type feedstocks, it is widely thought that stable isotopes are not useful to track renewable carbon during co-production. In contrast, our study demonstrates the utility of stable isotopes to: ? capture a record of renewable carbon allocation between FCC products of co-processing ? record changes in carbon apportionments due to changes in reactor or feed temperature Stable isotope trends as a function of percent bio-oil in the feed are more pronounced when the ?<
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 13<
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 C of the bio-oil endmember differs greatly from the VGO (i.e., it has a C4 biomass source?corn stover, switch grass, Miscanthus, sugarcane? versus a C3 biomass source? pine, wheat, rice, potato), but trends on the latter case are significant for endmember differences of just a few permil. The correlation between measured <
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 14<
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 C and ?<
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 13<
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 C may be useful as an alternative to carbon accounting, but the relationship must first be established for different bio-oil sources.
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