...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Cleaner Production >Don't scrap the waste: The need for broader system boundaries in bioplastic food packaging life-cycle assessment - A critical review
【24h】

Don't scrap the waste: The need for broader system boundaries in bioplastic food packaging life-cycle assessment - A critical review

机译：不要废弃废物：在生物塑料食品包装生命周期评估中需要更广泛的系统界限 - 一个批判性评审

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The increasing amount of plastic waste generated each year, fuelled by the growing consumption of single-use plastics in food packaging applications, threatens the integrity of our ecosystems while creating an unprecedented waste management crisis. The biodegradable properties of some bioplastics have been identified as a promising solution to divert food and food packaging waste from landfill while avoiding plastic leaking into the environment. However, such bio-based biodegradable alternatives may not necessarily provide an improvement in overall environmental impact, especially when considering their efficacy at preventing food waste. This is the first systematic review to investigate the relationship between food packaging and food waste, based on conventional and biodegradable plastic food packaging life-cycle assessments (LCAs). It focuses on the trade-offs that may occur between food packaging production, end-of-life management and food waste prevention across the entire food packaging life-cycle. Following a review of 111 papers, 19 were identified for further investigation and data extraction. Quantitative analysis for five LCA impact categories, as well as hotspot analysis and end-of-life scenario analysis for global warming potential were conducted. The resulting picture is conflicting and suggests that though bioplastics display environmental benefits for global warming potential and non-renewable energy use, these are often negated by the agricultural inputs required for bioplastics raw material production. While the LCAs included in this study do not provide enough evidence to state which polymer is best at reducing food waste, they emphasise the environmental footprint associated with food production and food waste, and highlight the importance of including the food itself in food packaging LCAs. Therefore, focusing on food packaging performance in food waste minimisation is critical. We found that bioplastics provide the benefit of diverting biodegradable waste from landfill or incineration to 'greener' streams such as anaerobic digestion and composting, contributing to a circular economy. Encouraging biodegradable bioplastics should target plastic packaging where effective recycling measures are failing due to the challenges that remain for treating and recycling materials made of multiple, highly food-contaminated layers. The bioplastic industry is still young and optimising both the manufacturing process and material biophysical properties would contribute towards improving the overall environmental profiles of bioplastics. (C) 2020 The Author(s). Published by Elsevier Ltd.
机译：每年产生的塑料废物量越来越多，通过在食品包装应用中不断增长的单用塑料消耗，威胁到我们生态系统的完整性，同时创造了前所未有的废物管理危机。一些生物塑料的可生物降解性质已被确定为将食物和食品包装废物从垃圾填埋处转移到垃圾填埋场的有前途的解决方案，同时避免塑料泄漏到环境中。然而，这种基于生物可生物降解的替代品可能不一定能够在整体环境影响方面提供改善，特别是在考虑在预防食物垃圾处的功效时。这是研究食品包装和食品废物之间关系的第一个系统审查，基于常规和可生物降解的塑料食品包装生命周期评估（LCA）。它专注于食品包装生产，生活结束管理和整个食品包装生命周期之间的食物废物预防之间可能发生的权衡。在审查111篇论文后，已确定19份进一步调查和数据提取。进行了五个LCA影响类别的定量分析，以及热点分析和全球变暖潜力的寿命分析。由此产生的图片是冲突的，并且表明除了生物塑料对全球变暖潜力和不可再生能源使用的环境效益，这些效果通常被生物塑料原料生产所需的农业投入否定。虽然本研究中包含的LCA没有提供足够的证据来陈述哪种聚合物最适合减少食物垃圾，但它们强调与食品生产和食物垃圾相关的环境足迹，并突出了在食品包装LCA中包括食物本身的重要性。因此，专注于食品废物污水最小化的食品包装性能至关重要。我们发现，生物塑料提供从垃圾填埋场或焚烧转移可生物降解废物的益处，以“绿色的”流，如厌氧消化和堆肥，有助于循环经济。令人抑制的可生物降解的生物塑料应瞄准塑料包装，因为仍有用于治疗和回收材料制成的材料的挑战，有效的回收措施的污染措施失败。生物塑料行业仍然年轻，优化制造过程和材料生物物理性质将有助于改善生物塑料的整体环境谱。 （c）2020提交人。 elsevier有限公司出版

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号