染色纤维的剥色技术研究进展

Research Progress on Color Stripping Technology for Dyed Fabrics

有效剥色是染色纤维疵品回修和废旧纺织纤维再利用的关键。物理剥色操作简单,但使用范围有限。化学剥色常在高温及强碱条件下进行,易造成纤维损伤而影响再利用,同时产生大量成分复杂且难生化的剥色废水;生物剥色条件温和,但有效剥色菌株单一,耗时较长;利用高级氧化产生的强氧化剂对染色纤维进行剥色,不仅能取得较为理想的剥色效果,还可减轻剥色对纤维的物理损伤,有望实现剥色的同时进行剥色液的有效处理。

Excellent stripping performance is the important aspect for the remediation of faulty dyed fabrics and the reuse of waste cotton fabrics. Physical stripping was easy to operate, whereas only the stripping of dyed polymeric materials was attempted. Chemical stripping was commonly conducted under high temperature or alkaline conditions, which usually lead to damage to fibers and affect the reuse of fibers. Additionally, a lot of complicated and biorefractory stripping wastewater were generated simultaneously. Biological color stripping was regarded as an environmentally friendly and cost-effective alternative, however, cultivation of effective stripping strain and time consuming restricted its practical application. Using the strong oxidant generated by advanced oxidation process as stripping agent would be a promising alternative not only due to the weak damage to fibers but also due to the effective stripping and the reduction of stripping water.