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 GHGenius 3.15 TagsAnaerobic Digestion
GHGenius 3.15
Provincial Defaults
 Biomethane Report
 Prepared March 2009
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There is increased interest in bio-methane in the transportation sector. This term means different things to different people but would typically include landfill gas and the output from anaerobic digestion. The production of landfill gas is already included in GHGenius as a feedstock for methanol production but for this work its use is expanded to compress the gas and use it as CNG or liquefy it to produce LNG.

Anaerobic digestion of biological waste and agricultural residues is a rapidly expanding industry in Europe. Part of the drive there is a result of significant government incentives but there will be situations in Canada where environmental requirements drive the application of this technology and we will likely see some further expansion of the availability of bio-methane in Canada.

Anaerobic digestion (AD) is applied using mostly waste materials (manure, food and beverage wastes, etc.) rather then AD involving feedstocks grown specifically to produce biogas. It is unlikely that this later option will be adopted in North America unless the value of the biogas approaches that in the very heavily subsidized European markets. Hay, as a substitute for silage, as a feedstock for the AD process is modelled so that some sensitivity to non-waste products can be accessed. The structure of the model has been set so that any of the four agricultural residues can be used as a feedstock, either alone or in combination with manure.

The gas from the landfill or the digester will be cleaned up and either compressed or liquefied so that it can be used as a transportation fuel for light and heavy-duty applications.
The necessary changes have been made to the macros to ensure that the sensitivity solvers, Monte Carlo simulator, and other macros all function with the additional sheet in the model. The version of the model that accompanies this report is 3.15.

Tags: Anaerobic Digestion - Biomethane - GHGenius 3.15 - LFG
 Provincial Default Values
 Prepared March 2009
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The recent strategic development plan for GHGenius identified a need for “Provincial” versions of GHGenius. Some of the provinces wish to develop their own versions of GHGenius so that they can establish the default values for various fuels.

This has been accomplished by the addition of a series of default buttons on the Input Sheet. These buttons change the model to the appropriate region, the correct provincial power mix, the appropriate crude oil slate, and the correct petroleum product distribution patterns. Like other default values in the model the user can still overwrite the cells so that no functionality is lost. There are default values developed for BC, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, and Atlantic Canada.

The defaults have been set up for the various commercial fuels, gasoline, diesel, natural gas, LPG, ethanol, and biodiesel. In some cases, reasonable estimates will be made of what is likely to happen in the province with respect to the supply of ethanol and biodiesel. The version of the model that accompanies this report is 3.15.

Tags: Biodiesel - Diesel - Ethanol - GHGenius 3.15 - Gasoline - Provincial Defaults
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