Greenhouse gasses emissions and energy balances of a non-vertically integrated sugar and ethanol supply chain: A case study in Argentina
作者： Martín M. Acreche , Alejandro H. Valeiro
DOI: 10.1016/J.ENERGY.2012.12.046
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摘要: Abstract In order to address society's concerns regarding the sustainability of sugar and ethanol production use, this paper calculates energy greenhouse gasses (GHG) emissions' balances a non-vertically integrated sugarcane industry in Tucuman-Argentina. The essential operations involved sugar/ethanol cycle were taken into account. Results show that generated an balance 3.4:1. GHG emissions during 1824 2231 kg CO 2 eq. ha −1 year for low middle high farms' technological levels, respectively. mill process emitted 1187 kg . main factors influencing these gas-oil nitrogen fertilizers used agricultural stage, natural gas consumed by mill, burning (only balance). impact use reducing under current scheme (6.8 Mg ha sugar + 380.9 kg ha ethanol), final blends 95% gasoline 5% vehicles, is negligible. A sensitivity analysis indicates switching 100% bagasse as fuel mill's boilers, being produced directly from juice, blend 90% 10% ethanol, amount 1746 kg could be avoided.
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