Data-driven circular procurement of para-aramid using handheld spectroscopy

Résumé fourni par la source

Reliable quality assessment of End-of-Life (EoL) materials remains a primary bottleneck in operationalizing the circular economy. The heterogeneity of EoL materials, limited traceability, and inadequate sensing technologies at collection points create inefficiencies that undermine the entire value chain. Handheld Near-infrared (NIR) and Raman spectroscopy offer a promising route toward real-time, non-destructive material analysis. Yet, their lower precision and high sensitivity to environmental variation hinder practical implementation. This study introduces a dual-perspective decision framework that integrates handheld spectroscopy with chemometrics to guide circular procurement. By linking material composition to both value (seller perspective) and acceptability thresholds (buyer perspective), the framework enables quantitative, evidence-based decision-making at the point of collection. Using para-aramid EoL materials as a proof of concept, four handheld spectrophotometers (Trinamix, Neospectra, Tellspec, and Mira) were benchmarked across multiple quality thresholds. Spectral data were used to develop classification (buyer) and regression (seller) models, while environmental and economic assessment quantified the broader impact of handheld screening. Trinamix emerged as the optimal device, achieving 100% balanced accuracy at the 92% para-aramid threshold and the lowest Root Mean Square Error of Prediction (RMSEP) of 0.56% with Support Vector Regression. By redefining EoL materials screening from a constraint into a data-driven analytical process, handheld spectroscopy delivers measurable environmental and financial benefits, advancing the transition toward low-carbon circular systems.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.