Abstract
Carbon footprint was calculated for cassava starch product in Thailand. Objective of this study was to evaluate and compare the global warming impacts of cassava starch production in 3 factories located in North-Eastern Thailand. The system boundary was defined from cradle to factory gate, starting from cassava cultivation and harvesting until cassava starch production by using life cycle assessment (LCA) methodology based on ISO 14040 series. The selected functional unit was 1,000kg of dry native starch, excluding packaging. Input and output data were analyzed and results were shown in terms of global warming potential (GWP) impact categories. The average greenhouse gases (GHGs) emission value based on LCA methodology of 3 factories was 594 kgCO2e per one ton of dry native starch. The results indicated that the cultivation and harvesting procedure was the major source emitting GHGs, around 40-59% of the total, if the factory used the biogas from wastewater treatment plant. Based on this result, the estimated total GHGs emission of cassava starch production in Thailand in the year 2013 was a total of approximately 10,500 million tons of CO2e.
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