Bio-Carbon Accounting for Bio-Oil Co-Processing: 14C and 13C/12C

[摘要] 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 ??¹³C 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 ¹⁴C and ??¹³C may be useful as an alternative to carbon accounting, but the relationship must first be established for different bio-oil sources.

[发布日期] 2016-06-21

[学科分类] 燃料技术

[关键词] Energy Sciences