Recycling dyes and fibres from textile waste

时装和纺织行业通过印染业务和纺织废物堆积，在其供应链的两端造成了极端的污染。纺织品回收需要清洁和均匀的投入，纺织品染色需要更可持续。有效回收纺织品的障碍之一是纺织品废料中存在染料。染料使纺织品废料异质，这意味着机械回收商必须智能地混合颜色，化学回收商必须在加工前对材料进行脱色。在供应链的另一端，染色过程占全球废水污染的20%，使用的染料中超过99%来自化石燃料。染料回收是一项新的化学技术，为纺织废物创造了脱色前处理，同时还能够从废纤维中回收染料--这是一种创新的循环染色概念。这个过程吸收有色纺织废料，并将染料提取到一种对环境无害的溶剂中。这可以在不降解材料的情况下从废物中去除颜色，产生更容易回收的均匀的脱色纤维。然后，富含染料的溶剂被用作染浴，用回收的染料对新材料进行染色。该项目旨在推动这项技术的进步：从对小块织物进行染色的实验室规模工艺，到能够高效地对全尺寸服装进行染色的中试工艺。扩大试验将在25-L规模下进行，处理由英国纺织品制造商提供的消费前纺织品废料。这些试验将演示纺织废料的脱色和随后对全尺寸服装的染色。将评估脱色材料、新染色材料以及多个放大工艺参数的几个关键指标。将对脱色材料的机械和化学性能进行评估，并测试其可回收性。新染色材料的特点是其色牢度以及在批次内和跨批次染色的一致性。工艺放大的结果将帮助我们验证我们的价值主张和未来试点工厂的设计，以及加强工艺业务案例和进一步发展可持续时尚空间内的合作伙伴关系。该项目还旨在开发基于实验室的原型，并为客户加工样品，以利用他们的纺织废料和面料投入来演示这项技术。这将为DyeReccle创造收入来源，并通过展示明显的市场吸引力和切实的客户吸引力来提高我们的投资准备水平。

Fashion and textile industries are causing extreme pollution at both ends of their supply chain through dyeing operations and textile waste accumulation. Textile recycling requires clean and homogenous inputs and textile dyeing needs to be more sustainable. One of the barriers to effective textile recycling is the presence of dyes in textile waste.Dyes make textile waste heterogeneous, meaning mechanical recyclers must intelligently blend colours, and chemical recyclers must decolour the material prior processing. At the other end of the supply chain, dyeing processes accounts for 20% of global wastewater pollution, and over 99% of dyes used are derived from fossil fuels. DyeRecycle is a new chemical technology creating decolorization pretreatment for textile waste while also enabling dye recycling from waste fibres -- an innovative circular dyeing concept. The process takes in colored textile waste, and extracts the dyes into an environmentally benign solvent. This removes the colour from the waste without degrading the material, producing homogeneous decoloured fibres that are more easily recycled. The dye-rich solvent is then used as a dyeing bath to dye new material with the recycled dyes. This project aims to progress the technology: from a bench-scale process dyeing small pieces of fabric, to a pilot-scale process able to efficiently dye full-size garments. Scale-up trials will be conducted at a 25-L scale, processing pre-consumer textile waste provided by UK-based textile manufacturer. These trials will demonstrate textile waste decolourization and subsequent dyeing of full-size garments. Several key metrics will be assessed for the decolored material, newly dyed material, as well as multiple scaled-up process parameters. Decolored materials will be assessed for their mechanical and chemical properties and to test their recyclability. Newly dyed material will be characterised in terms of its colour fastness as well as the consistency of dyeing within and across batches. Findings from process scale-up will help us validate our value proposition and design of a future pilot plant, as well as to strengthen the process business case and further develop partnerships within the sustainable fashion space. The project also aims to develop lab-based prototypes and process customers samples for to demonstrate the technology using their textile waste and fabric inputs. This will create a revenue stream for DyeRecycle and improve our investment readiness level by demonstrating a clear market pull and tangible customer traction.