聚乳酸生命周期中CO_2的评价

LCA on CO_2 from PLA

对新型环保材料聚乳酸进行生命周期评价(LCA),分阶段考察聚乳酸(PLA)生命周期中CO2排放和能量消耗。将生命周期评价这个环境影响工具应用于聚乳酸的工业生产中,详细介绍CO2排放这一指标的计算方法;聚乳酸生命周期评价的结果显示来自于生物质的聚乳酸无论是能量消耗还是CO2排放都明显少于性能相近的石油基塑料,表明聚乳酸产品广泛应用在减少白色污染和减缓气候变化方面有良好应用前景。

In this paper, a new type of environmentally friendly material poly-lactic acid （PLA） was studied by life cycle assessment （LCA）, and CO2 emissions and energy consumption were considered in each stage. As a tool, life-cycle assessment was applied to the industrial production of PLA, in which the calculating of CO2 emissions was described in detail. The results of LCA showed that the biomass based PLA was superior to the petro based material with similar function both in CO2 emissions and energy consumption. So a conclusion could be got that the wide use of PLA products would not only resolve the white pollution problems, but also relieve the climate change. So a good application prospect can be seen in the near future.