聚酯纤维回收再利用及环境影响评价进展综述

聚酯纤维回收再利用不仅能节约资源,而且可以减轻环境负荷。文章综述了聚酯纤维回收再利用及其环境影响评价研究,结果表明:对聚酯纤维进行回收再利用比直接填埋或直接焚烧更具环境效益;聚酯纤维回收再利用方法主要有物理回收法、能量回收法和化学回收法,其中以物理回收法和化学回收法为主;物理回收法经济成本低,温室气体减排方面的环境效益好,但再生产品的质量有待提升;能量回收法通过焚烧的方式进行能量转换,产生较多的温室气体排放,环境效益较差;化学回收法得到的最终产物可以达到与原生聚酯纤维几乎相同的品质,降低回收再利用过程中的温室气体排放可以进一步提升该方法的环境效益。

Review on Polyester Fiber Recycling and Progress of Its Environmental Impact Assessment

The recycling of polyester fiber can help resource conservation and environmental load alleviation.This study reviews polyester fiber recycling and its environmental impact assessment.The results show that recycling polyester fiber is of higher environmental benefit by than landfilling or incineration.The recycling methods of polyester fiber mainly include physical recycling,energy recycling and chemical recycling.Physical recycling and chemical recycling are the most commonly used methods.Physical recovery method is of low economic cost and good environmental benefits in terms of greenhouse gas emission reduction,but the quality of its recycled products needs to be improved.The energy recovery method converts energy through incineration,resulting in a large amount of greenhouse gas emissions and low environmental benefit.The quality of the final product obtained by chemical recycling is almost same with that of original polyester fiber.can further improve The environmental benefits of this method can be further improved by reducing the greenhouse gas emission in the recycling process.