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 Wheat Straw TagsBarley
Biodiesel
Canola
Corn
DME
Ethanol
Feedstock
Fischer Tropsch
GHGenius 4.02
HRD
Jatropha
Palm Oil
PyrolysisOils
Soybeans
Sugar Cane
Tallow
Used Cooking Oil
Wheat Straw
Wood
 Advanced Biofuel Update
 Prepared October 2012
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The US National Renewable Energy Laboratory has published a number of techno-economic assessments over the past several years on advanced biofuel pathways. These studies include:
Ethanol via biochemical processes using agricultural residues.
Ethanol via thermochemical process using woody biomass.
Gasoline via thermochemical process using woody biomass.
FT Distillate via thermochemical process using woody biomass.
Gasoline and Diesel fuel via pyrolysis.


Additional information has been found for the wood to DME process and this information is used to update this pathway in GHGenius. All of these pathways are already in GHGenius, having been added over the years. This work updates the default values in the GHGenius model and uses the updated data to model and report on the energy balances and GHG emissions of the pathways. This includes undertaking sensitivity analysis on the important variables.

In GHGenius there are multiple sub-pathways for some of these fuel systems, for example there are four agricultural feedstocks and a wood feedstock for the biochemical route and the pyrolysis pathway has woody biomass feedstock and agricultural residues. We have developed consistent inputs for all of these sub-pathways based on the NREL data, whereas they only provide data for one feedstock.

There are process developers that have hybrid systems, those that use both biochemical and thermochemical process to convert biomass to transportation fuels. These can also be modelled in GHGenius by adapting one of the existing pathways. Two examples of this are presented, but the inputs required for these systems are not included as default values in the model.

The results are presented for Canada for the year 2012 using the IPCC 2007 GWPs, unless otherwise stated. The version of GHGenius that accompanies this report is version 4.02. This version also has some updates to the electric and fuel cell vehicle pathways, which are described in a separate report. The GHGenius manuals have also been updated with the information used in this report.


Tags: DME - Ethanol - Feedstock - Fischer Tropsch - GHGenius 4.02 - PyrolysisOils - Wheat Straw - Wood
 2010 Biofuel Analysis
 Prepared December 2010
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In 2006, GHGenius was used to analyze the GHG emissions from the biodiesel and fuel ethanol pathways of interest in Canada. That project also investigated the sensitivity of the emissions to some of the parameters than could vary from project to project. That report has been used by a number of government departments, as they study the development of the industry in Canada. It is also one of the more popular reports on the GHGenius website.

Our knowledge of the performance of the biofuels industry in Canada has improved significantly in the four years since that work was done. In addition, GHGenius has been updated with better data on the biofuel production process and feedstock production systems. An updated report is therefore warranted, given the continued interest in the subject and the updated modelling data. The report will also serve as an updated documentation resource for these pathways in the model.

The biofuel pathways that have been analyzed in this report include five ethanol pathways, corn, wheat, barley and sugar cane based systems and a cellulosic ethanol system based on wheat straw feedstock. Six biodiesel feedstocks have been considered, canola, soybeans, tallow, used cooking oil, palm oil and jatropha. Four feedstocks have been considered for hydrotreated oils, palm, canola, tallow, and soybean oil.

For the sensitivity analysis, the focus has been on the issues that can vary from plant to plant, such as co-product drying, the use of combined heat and power, and the energy source for the thermal energy. In addition, issues that still have some uncertainty, such as changes in soil carbon are evaluated.

Tags: Barley - Biodiesel - Canola - Corn - Ethanol - HRD - Jatropha - Palm Oil - Soybeans - Sugar Cane - Tallow - Used Cooking Oil - Wheat - Wheat Straw
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