Project duration: 1 January 2020 – 31 December 2021


CHARAMBA will upscale an innovative inline-characterisation technology from ‘scan-the-bucket’ to ‘scan-the-truck’. Combining multiple sensors (e.g. XRT and 3DLT) directly measuring physical/chemical properties with artificial intelligence, the value and composition of complex heterogenous material streams can be quantified resulting in cost and time savings for recycling companies compared to current sampling and analysis procedures.

The solution (technology)

Today many recycling companies struggle with the value assessment of complex material/waste streams. The main issues are the costly and labour-intensive sampling procedures and subsequent chemical analysis, leading to long waiting times (often several weeks) and the associated financial uncertainty.

To counter this, VITO initiated the development of an in-line characterisation technology. This way, heterogenous and complex material streams can be assessed completely – eliminating the need for subsampling – and mass-balances can be produced ‘on-the-fly’. In fact, for each material particle a ‘digital twin’ is created which can be further assessed in a virtual way. In this technology, the heterogenous waste particles are dispersed on a conveyor belt as a mono-layer and scanned using X-rays, a 3D laser scanner and a colour camera. Using artificial intelligence, the device recognises the individual particles and assigns several important physical parameters: size, mass, shape, material, texture, etc.

Currently the technology is demonstrated successfully for a handful of streams on the level of relatively small samples, e.g. a few buckets (‘scan-the-bucket’). In the current CHARAMBA proposal, VITO wishes to further mature the technology, i.e. scale it up to an industrial relevant level or, in other words, to ‘scan-the-truck’. The project will focus on two required innovations: (1) a framework to efficiently tailor hardware, software and models to new streams and customer challenges and (2) a performance scale-up of the technology, to deal with industrially relevant throughput and provide stream statistics in real-time.

To take on this challenge, VITO partnered with Ghent University and two industrial partners, Suez and Umicore allowing to showcase the industrial relevance of the new characterisation technology.

After project completion, VITO wishes to introduce the innovative technology as a service to the market and subsequently launch a spin-off company selling tailor-made inline characterisation devices to several players in the metal recycling market.


  • Flemish Institute for Technological Research (Lead Partner), Belgium
  • Ghent University, Belgium
  • Suez Treatment & Recycling S.A., Belgium
  • UMICORE NV, Belgium
Learn more about CHARAMBA project on the official web page and on the VITO product page.