生物降解塑料 - 扔在哪里? 在奥地利,废物收集和管理途径的生命周期评估
Namrata Mhaddolkar1, Concetta Lodato2, Alexia Tischberger-Aldrian3
1Chair of Waste Processing Technology and Waste Management (AVAW), Montanuniversität Leoben, Franz-Josef-Strasse 18, 8700 Leoben, Austria; DTU SUSTAIN, Department of Environmental Engineering, Danish Technical University, Bygningstorvet, 115, 2800 Kgs. Lyngby, Denmark.
Waste management (New York, N.Y.)
|October 30, 2024
概括
这项研究发现,尽管消费者分类存在挑战,但机械回收是可生物降解塑料 (BDP) 的最佳选择. 有效的回收需要足够的废物,市场需求和BDP的基础设施.
科学领域:
- 环境科学 环境科学
- 废物管理 废物管理
- 材料科学 材料科学 材料科学
背景情况:
- 目前的废物管理系统面临着可生物降解塑料 (BDP) 的挑战,包括消费者对适当的来源分离的困惑.
- 可生物降解塑料需要特殊的处理,以避免对环境产生负面影响.
研究的目的:
- 调查奥地利在不同废物流中收集BDPs对环境的影响.
- 评估各种BDP管理场景的性能,包括焚烧,机械回收,堆肥和无氧消化 (AD).
主要方法:
- 环境生命周期评估 (LCA) 用于评估16个影响类别.
- 分析了三个主要废物流情景 (包装废物,生物废物,残留废物) 和多个子情景.
- 进行了敏感性分析,以确定影响结果的关键技术参数.
主要成果:
- 机械回收 (SP2) 在大多数影响类别中通常表现最好.
- 使用BDP作为替代燃料来替代工艺热量显示出比焚烧更有利的环境效益.
- 一个零电力进口和生物质热量的能源场景是替代途径的最佳选择.
结论:
- 机械回收是BDPs最有利的管理选择,与欧盟废物框架指令的层次结构保持一致.
- 有效的机械回收BDP取决于足够的废物量,强大的回收市场和适当的基础设施.
- 消费者对BDP源隔离的教育仍然是成功废物管理的关键因素.
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