了解包装塑料回收中的脱墨:弥合资源节约的差距,并确定平均危险系数
Shafeeq Ahmed Syed Ali1, I M S K Ilankoon1, Lian Zhang2
1Department of Chemical Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Selangor Darul Ehsan 47500, Malaysia; Waste and Critical Metals Sustainability Research Group, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Selangor Darul Ehsan 47500, Malaysia.
Journal of hazardous materials
|September 4, 2024
概括
改善塑料回收需要高质量的回收材料,但包装上的印刷油墨会降低质量. 本研究介绍了平均危险系数 (AHQ),以指导更安全的化学品选择,以有效地去除油墨,促进更清洁的塑料回收利用.
科学领域:
- 聚合物科学与工程 聚合物科学与工程
- 环境化学环境化学
- 可持续材料 可持续材料
背景情况:
- 塑料循环性取决于高质量的回收材料,但塑料包装带来了收集和回收的挑战.
- 印刷油墨等添加剂显著降低了回收材料的质量,需要有效的清除过程.
- 关于塑料去墨的研究有限,这突出了可持续塑料管理中的关键差距.
研究的目的:
- 解决从包装塑料中去除油墨的挑战,以提高回收材料的质量.
- 评估不同脱墨化学品的有效性和安全性.
- 引入一种定量方法来评估除墨化学品的危害.
主要方法:
- 对现有脱墨研究的文献综述,重点关注表面活性剂的有效性.
- 开发和应用化学风险评估的平均危险系数 (AHQ).
- 与全球协调系统 (GHS) 分类相比,除墨化学危害的比较.
主要成果:
- 阴离子表面活性剂显示出高的去墨效率 (高达100%),但引起了毒性问题.
- 平均危险系数 (AHQ) 是作为化学危险的定量衡量标准而开发的.
- 通过AHQ,可以比较除墨化学品,超越了对危害的定性评估.
结论:
- 有效的去墨是提高包装塑料回收品质和实现循环性的关键.
- 开发的AHQ提供了一个重要的工具,用于在塑料去墨的过程中进行知情,更安全的化学选择.
- 这项工作支持开发更环保的去墨处理工艺和更清洁的塑料废物回收利用.
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