关于废物聚乙烯化物的化学生物转换的关键进展和评估
Jiaqi Yang1, Aochuan Duan2, Zhiling Li2
1School of Civil & Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
The Science of the total environment
|November 1, 2024
概括
本综述探讨了用于转化聚乙烯 (PVC) 废物的创新策略. 热解被强调为PVC回收和再循环的最可行的方法,因为它的效率和工业适用性.
科学领域:
- 环境科学 环境科学
- 聚合物化学 聚合物化学
- 绿色化学 绿色化学
背景情况:
- 聚乙烯 (PVC) 的生产和消费带来了生态风险,包括人类暴露,微塑料污染和气候影响.
- 有效的废物管理策略对于减轻PVC对环境的负担至关重要.
研究的目的:
- 提供对创新的PVC废弃物转化战略的全面概述.
- 批判性地分析PVC的生物和化学降解方法.
- 评估不同PVC回收技术的环境,经济和工业可行性.
主要方法:
- 关于PVC废物转化科学文献的综述.
- 对PVC的微生物降解,热解,光催化和电催化的分析.
- 基于环境影响,经济可行性和工业相关性的技术的评估.
主要成果:
- 微生物降解提供了高能效的PVC分解,但需要改进的代谢途径和酶.
- 热解被确定为PVC回收/再循环的最推方法.
- 热解证明了易于实施,操作简单,有价值的产品生成,适合大规模应用.
结论:
- 需要创新策略来应对PVC废物的挑战.
- 热溶解为PVC回收和再循环提供了一个有希望和实用的解决方案.
- 推进PVC废物转化技术可以有助于减轻塑料废物和促进循环经济.
相关概念视频
00:46Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
01:09Radical Chain-Growth Polymerization: Mechanism
2.5K
The radical chain-growth polymerization mechanism consists of three steps: initiation, propagation, and termination of polymerization. The polymerization initiates when a free radical generated from the radical initiator adds to the unsaturated bond in the monomer. The unpaired electron of the free radical and one π electron in the unsaturated bond creates a σ bond between the free radical and the monomer. As a result, the other π electron in the unsaturated bond converts this...
2.5K
01:20Types of Step-Growth Polymers: Polyesters
2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K