TY - JOUR

T1 - Using the Lashof Accounting Methodology to Assess Carbon Mitigation Projects Using LCA: Ethanol Biofuel as a Case Study

T2 - Ethanol Biofuel as a Case Study

A1 - Courchesne,Alexandre

A1 - Becaert,Valerie

A1 - Rosenbaum,Ralph K.

A1 - Deschenes,Louise

A1 - Samson,Rejean

AU - Courchesne,Alexandre

AU - Becaert,Valerie

AU - Rosenbaum,Ralph K.

AU - Deschenes,Louise

AU - Samson,Rejean

PB - Wiley-Blackwell Publishing, Inc.

PY - 2010

Y1 - 2010

N2 - As governments elaborate strategies to counter climate change, there is a need to compare the different options available on an environmental basis. This study proposes a life cycle assessment (LCA) framework integrating the Lashof Mg-year accounting methodology that allows the assessment and comparison of different carbon mitigation projects (e.g. biofuel use, sequestering plant, afforestation project, etc.). The Lashof accounting methodology is chosen amid other methods of greenhouse gas (GHG) emission characterization for its relative simplicity and capability of characterizing all types of carbon mitigation projects. It calculates the cumulative radiative forcing caused by GHG emission within a predetermined time frame. Basically, the developed framework uses the Mg-year as a functional unit and isolates impacts related to the climate mitigation function with system expansion. The proposed framework is demonstrated with a case study of tree ethanol pathways (maize, sugarcane and willow). Study shows that carbon mitigation assessment through LCA is possible and that it could be a useful tool for decision makers as it can compare different projects regardless of their original context. Case study reveals that the system expansion scenario and the efficiency at reducing carbon emissions of the carbon mitigation project are critical factors having significant impact on results. Also, framework proves to be useful at treating land-use change emission as they are considered through the functional unit.

AB - As governments elaborate strategies to counter climate change, there is a need to compare the different options available on an environmental basis. This study proposes a life cycle assessment (LCA) framework integrating the Lashof Mg-year accounting methodology that allows the assessment and comparison of different carbon mitigation projects (e.g. biofuel use, sequestering plant, afforestation project, etc.). The Lashof accounting methodology is chosen amid other methods of greenhouse gas (GHG) emission characterization for its relative simplicity and capability of characterizing all types of carbon mitigation projects. It calculates the cumulative radiative forcing caused by GHG emission within a predetermined time frame. Basically, the developed framework uses the Mg-year as a functional unit and isolates impacts related to the climate mitigation function with system expansion. The proposed framework is demonstrated with a case study of tree ethanol pathways (maize, sugarcane and willow). Study shows that carbon mitigation assessment through LCA is possible and that it could be a useful tool for decision makers as it can compare different projects regardless of their original context. Case study reveals that the system expansion scenario and the efficiency at reducing carbon emissions of the carbon mitigation project are critical factors having significant impact on results. Also, framework proves to be useful at treating land-use change emission as they are considered through the functional unit.

KW - Carbon sequestration

KW - Radiative forcing

KW - Environmental assessment

KW - Life cycle assessment (LCA)

KW - Climate change

KW - Industrial ecology

UR - http://dx.doi.org/10.1111/j.1530-9290.2010.00228.x

U2 - 10.1111/j.1530-9290.2010.00228.x

DO - 10.1111/j.1530-9290.2010.00228.x

JO - Journal of Industrial Ecology

JF - Journal of Industrial Ecology

SN - 1088-1980

IS - 2

VL - 14

SP - 309

EP - 321

ER -