U.S.-FocUSed Biochar report - BioEnergy Lists

nario are based on a 2005 bioenergy-based combined DoE – USDA study called the “Billion Ton Vision” (BTV). 32The BTV provides a detailed breakout – with some components providing only tens of Megatons and tens ofMega-acres. All of the BTV is expressed in English units, requiring conversion for our use. . Biochar is not a topicin the BTV report but everything in the BTV is relevant to a Biochar study. The details of the BTV itself are givenin supplementary material. Here we only concentrate on the possibilities of expanding the BTV – which was intendedto meet 30% of the US biofuel industry needs. To emphasize both the similarities and the differences, weshall call this new expanded scenario the Biochar Billion Tonne Vision or BBTV for short. The term “Billion” inBTV refers to dry biomass (not carbon) tons (not tonnes) of biomass. In the BBTV, “billion” refers to the tonnes(not tons) of carbon (not biomass) in the produced char. For simplicity, they are taken to be in the ratio of 4:1units of biomass to one unit of carbon in Biochar.Figure 5.1 shows the BBTV graphically. The same information is in Table 5.1. The main central large “exploded”Pie-chart shows the nine elements of the BBTV. These nine B-wedge flows are themselves fed from eight outersupply rectangular stock “boxes”.BBTAGRICULTURALLANDS ENERGYOLDBTNew Areas,only BBTVBTV CHANGE FROM 2004 TO 2050A3=0.25A4=0.6IDLE LANDBIOCHARAGRICULTURALLAND RESIDUESA2=0.34A5=0.60.570.34A1=0.9PASTURELAND, HTCF4=0.4F1=.33AgricultureA- F-0.02F2=.17F3=0.4Forestry0.17BTFOREST LANDRESIDUESFOREST LAND,FIRE MITIGATIONFOREST LAND,BIOCHARBBTVBTVAgricultLandEnergA5OldAreasNewAreas,onlyBBTVIdlLanBiochFigure 5.Figure 5.1. Schematic Relationship Between the BTV and the BBTVThe diagonal lines from the origin separate three main region. The heavy solid lines separate the five agricultureB-wedges from the four forestry B-wedges. The horizontal line separates the four new categories of sequestrationin the BBTV from the five older types. These four now provide a total of 2 new B-wedges – half of the postulated4 in total. The two dashed lines in the upper right quadrant separate the two BTV B-wedge segments from32 http://www1.eere.energy.gov/biomass/pdfs/final_billionton_vision_report2.pdfBiochar GHG reduction accounting in: Potential Biochar Greenhouse Gas Reductions55