聚棉废料织品循环利用顺序水解和糖解
Nienke Leenders1, Rijk M Moerbeek2, Matthijs J Puijk3
1Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands.
Nature communications
|January 29, 2025
概括
本研究介绍了一种可扩展的化学回收工艺,用于混合棉花和聚织品. 它通过糖解有效地将葡萄糖从棉花和聚中分离和回收,解决了织废物挑战.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 快速时尚会导致大量的织废物,因为产品的生命周期很短.
- 混合纤维织品 (棉花/聚) 对传统的废物管理和回收提出了挑战.
- 需要有效的化学回收方法来管理消费后的织废物.
研究的目的:
- 为混合棉花和聚废料织品开发一种高产量,连续的化学回收工艺.
- 为了证明开发的回收过程的可扩展性.
- 从织废物中回收有价值的部件,以便有可能重复使用.
主要方法:
- 使用43%重量%的盐酸酸进行酸化,以去聚合聚棉织品的棉花部分.
- 从固体聚树脂残留物中分离富含葡萄糖的水解剂.
- 剩余聚的糖解产生双二基乙烯甲酸.
主要成果:
- 通过酸水解,从棉花部分获得75%的摩尔葡萄糖产量.
- 在一个230升试点工厂反应堆中成功回收了消费后的混合聚棉废物.
- 从聚中获得 bis ((2-基乙烯) 甲酸盐,78%的分离产量,纯度>98%.
结论:
- 开发的顺序化学回收过程对混合棉花和聚废物有效.
- 该过程具有可扩展性,并在试点工厂中进行了演示,为织废物提供了可行的解决方案.
- 这种方法可以从织废物中回收有价值的化学成分,促进循环经济.
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