Surface modification and selective flotation of waste plastics for effective recycling-a review
Surface modification and selective flotation of waste plastics for effective recycling-a review
复制标题
废塑料的表面改性和选择性浮选以实现有效回收——综述
DOI：
10.1016/j.seppur.2019.05.052
复制
发表时间：
2019
影响因子：
8.6
通讯作者：
Chonqing Wang
中科院分区：
文献类型：
--
作者：
Hui Wang;Yingshuang Zhang;Chonqing Wang
废塑料的急剧增加对我们的健康和生态系统造成了危害。而废塑料的分离一直是回收利用的重点，因为塑料混合物给有效的再利用带来了麻烦。选择性浮选因其对物理化学性质相似的塑料具有显著的分选效果而备受关注。本文阐述了塑料回收中分选的益处，阐述了塑料回收中的分选方法，并对塑料浮选的影响因素、方法、机理和障碍进行了分析。强调表面改性是提高塑料分离技术的重要环节。提出了切实可行的方案，以提高不可避免的细粒的回收，并进一步努力消除浮选对下道工序的不利影响。可以预见，垃圾填埋塑料和微塑料可以通过浮选分离产生补充资源。
The dramatic increase in waste plastics has created a hazard to our health and ecosystems. And separation of waste plastics has been the highlight of recycling because plastic mixtures make trouble for efficient reuse. Selective flotation attracts much attention due to its remarkable efficiency for separation of plastics with analogous physic-chemical characteristics. In this review, we specify the benefit of separation on plastic recycling, clarify the separation methods in plastic recycling and inspect the factors, methods, mechanisms and hindrances related to plastic flotation. Surface modification is emphasized as essential procedure for technical improvement of plastic separation. We propose practical schemes to improve the recycling of unavoidable fine particle and further try to eliminate the adverse impact from flotation on next procedure. It is predictable that landfill plastics and microplastics can be subjected to flotation separation to generate supplementary resource.