Fig. 2
From: Hydrocarbon bio-jet fuel from bioconversion of poplar biomass: life cycle assessment
Biorefinery CO2 emission sources for each biorefinery configuration. Emissions are identified as being from either a biogenic or nonbiogenic source. NGSR refers to emissions from natural gas steam reforming. LG/NGSR refers to emissions from NGSR to produce supplemental hydrogen in the lignin gasification simulations. WWT refers to emissions from the onsite wastewater treatment facility