In collaboration with NewRetex A/S, a special project shows how both the design of the collection container and social factors affect the outcome. An important discovery is that the right container and clear communication with both collectors and citizens is crucial for sustainable textile collection.
A new master's study conducted by Mette Kirk Steenberg Jensen from the University of Southern Denmark highlights the importance of developing and improving methods for collecting and pre-sorting textile waste. The goal is to increase reuse and material recycling while minimizing problems with moisture and contamination in the collected textile material. The results represent a significant contribution to the work on sustainable textile management and will support the development of efficient collection systems under the SorTex project.
In close collaboration with NewRetex, the study combines design anthropology methods with advanced data analytics from the company's MES system, which tracks textiles throughout the collection and sorting chain. The study highlights how the interplay between material design, collection infrastructure and social practices is crucial for the quality of the collected textile waste.
Collection containers are a decisive factor for textile quality
One of the clear findings of the study is the correlation between the type of collection container and the amount of moisture in the textiles. Data from NewRetex shows that 660-liter containers and larger shipping containers, which have low sensitivity to rain, significantly reduce water impact and thus increase the chance of collecting high-quality textiles. Conversely, containers with side openings are more susceptible to rain, contributing to a higher proportion of wet and contaminated textiles. The frequency of emptying is also important as more frequent emptying reduces the risk of moisture damage and contamination.
The social dimension a key to stable collection routines
The study also highlights social factors as crucial to successful textile collection. Both the knowledge and engagement of citizens and the training and practices of collection staff have a major impact on avoiding contamination and ensuring proper sorting. Through interviews and field observations, concrete examples have been identified where clear communication and information efforts have improved results. In the project, information signs have been developed and tested to support understanding and stimulate behavioral changes that lead to more correct sorting. These actions are important steps towards establishing a sustainable "proto-practice" in textile collection.
No one-size-fits-all solution, but locally adapted systems
The study states that there is no one solution that fits all textile collection situations. To ensure effective collection practices, methods must be tailored to local conditions such as population density, housing types and geographical characteristics. It is also essential to view collection systems as dynamic and iterative, with continuous evaluation and adaptation to meet changing needs and demands.
Mette Kirk Steenberg Jensen's master's study is a significant contribution to the development of flexible and efficient methods for textile waste management. The results will be an integral part of the SorTex project's efforts to help Nordic stakeholders and municipalities comply with the new EU requirements for separate textile collection and create a more circular and sustainable textile industry.