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首页> 外文期刊>Journal of Polymers and the Environment >Bioplastic Wastes: The Best Final Disposition for Energy Saving
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Bioplastic Wastes: The Best Final Disposition for Energy Saving

机译：生物塑料废物：节能的最佳最终处置方法

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摘要

The pressing need to reduce the consumption of non-renewable resources and the emission of greenhouse gases into the environment, in recent decades has led to the wide development of bio-based plastics that are produced from renewable sources, such as corn, wheat, oil seeds etc. Actually, the most important bio-based plastics on the market are the poly(lactic acid) (PLA) produced from Nature Works (USA) and the Mater-Bi, a starch based bioplastics, made from Novamont (Italy). The aim of this work is not only to assess the actual energy and greenhouse gases (GHGs) savings resulting from the production of bioplastics, compared with the production of conventional plastics, but also to analyze what might be the best final disposition of bioplastic wastes in order to maximize the energy saving. Therefore, by using the Life Cycle Assessment (LCA) methodology, LCAs cradle to gate and cradle to grave were carried out both for PLA and Mater-Bi, taking into consideration as final scenarios composting, incineration, anaerobic digestion and mechanical recycling processes. The work demonstrates how incineration, com posting and anaerobic digestion processes are clearly under-performing, from an environmental point of view, with respect to the mechanical recycling process.
机译：迫切需要减少不可再生资源的消耗和向环境中排放温室气体，最近几十年来，由可再生资源（例如玉米，小麦，石油）生产的生物基塑料得到了广泛的发展。实际上，市场上最重要的生物基塑料是从Nature Works（USA）生产的聚乳酸（PLA）和由Novamont（意大利）生产的淀粉基生物塑料Mater-Bi。这项工作的目的不仅在于评估与传统塑料生产相比，生物塑料生产所产生的实际能源和温室气体（GHG）节省，而且还分析了可能是最佳的生物塑料废物最终处置方式。为了最大限度地节省能源。因此，通过使用生命周期评估（LCA）方法，将PLA和Mater-Bi的LCA从摇篮到大门和从摇篮到坟墓都进行了考虑到最终方案的堆肥，焚化，厌氧消化和机械回收过程。这项工作表明，从环境的角度来看，在机械回收过程方面，焚烧，堆肥和厌氧消化过程显然表现不佳。

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