Wang Chong-qing, Wang Hui, Fu Jian-gang, Liu You-nian
School of Chemistry and Chemical Engineering, Key Laboratory of Resource Chemistry of Nonferrous Metals, Ministry of Education, Central South University, Changsha, 410083 Hunan, China.
Waste Manag. 2015 Jul;41:28-38. doi: 10.1016/j.wasman.2015.03.027. Epub 2015 Apr 11.
The sharp increase of plastic wastes results in great social and environmental pressures, and recycling, as an effective way currently available to reduce the negative impacts of plastic wastes, represents one of the most dynamic areas in the plastics industry today. Froth flotation is a promising method to solve the key problem of recycling process, namely separation of plastic mixtures. This review surveys recent literature on plastics flotation, focusing on specific features compared to ores flotation, strategies, methods and principles, flotation equipments, and current challenges. In terms of separation methods, plastics flotation is divided into gamma flotation, adsorption of reagents, surface modification and physical regulation.
塑料废弃物的急剧增加带来了巨大的社会和环境压力，而回收利用作为目前可有效减少塑料废弃物负面影响的一种方式，是当今塑料行业中最具活力的领域之一。泡沫浮选是解决回收过程关键问题即分离塑料混合物的一种很有前景的方法。本文综述了近期有关塑料浮选的文献，重点关注与矿石浮选相比的具体特点、策略、方法和原理、浮选设备以及当前面临的挑战。在分离方法方面，塑料浮选分为γ浮选、试剂吸附、表面改性和物理调控。
