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在工业规模堆肥条件下对生物塑料运输袋的生物降解评估

Mária Mörtl¹, Mariem Damak^1,2, Miklós Gulyás¹

¹Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, H-2100 Gödöllő, Hungary.

|January 8, 2025

概括

用粉和PBAT制成的生物塑料袋在12周内在工业堆肥中显示95%的分解. 虽然大部分是可生物降解的,但观察到一些生态毒性,表明改善可持续废物管理的潜力.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
生物技术是生物技术.

背景情况:

全球塑料垃圾是一个重要的环境问题,每年生产4.138亿公塑料垃圾.
基于石油的塑料有助于温室气体排放和废物管理挑战.
生物塑料为传统塑料提供了一个潜在的环保替代品.

研究的目的:

在工业堆肥条件下评估生物塑料运输袋 (20%粉,10%添加剂,70%PBAT) 的生物降解.
为了解决当前生物塑料生物降解研究中缺乏现实应用性的问题.
评估生物塑料在大型堆肥环境中的环境影响和降解效率.

主要方法:

进行了为期12周的工业堆肥实验,使用37.5肥料/木材和50生物聚合物袋.
监控的关键堆肥参数:温度,pH值和电导率.
进行了分解,生态毒性和高级分析试验 (FTIR,GC-MS),以评估生物降解和化学变化.

主要成果:

堆肥温度达到70°C并保持在50°C以上;pH值稳定在8.16;电导率为1251μs cm-1.1.
观察到碳比和有机物含量的显著变化.
95%的生物塑料袋在12周内分解,在生态毒性测试中发芽抑制率各不相同.

结论:

生物塑料袋在工业堆肥条件下表现出大量的分解.
该研究为现实世界生物塑料降解提供了有价值的数据,为废物管理策略提供了信息.
研究结果表明,有可能优化生物塑料标准,并促进可持续废物管理解决方案.

关键词:

美国的FTIR是FTIR.在GC-MS中使用GC-MS.在PBAT和PBAT之间生物降解生物降解生物聚合物生物聚合物堆肥堆肥堆肥是一种

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