Cited by 21Spectroscopy and Chemometric AnalysesMunicipal Solid Waste ManagementCultural Heritage Materials Analysis

Comparison of classification methods performance for defining the best reuse of waste wood material using NIR spectroscopy

Open access
Mancini, Manuela, Taavitsainen, Veli-Matti, Rinnan, Åsmund·2024·Waste Management

Abstract

Recycling of post-consumer waste wood material is becoming an increasingly appealing alternative to disposal. However, its huge heterogeneity is calling for an assessment of the material characteristics in order to define the best recycling option and intended reuse. In fact, waste wood comes into a variety of uses/types of wood, along with several levels of contamination, and it can be divided into different categories based on its composition and quality grade. This study provides the measurement of more than a hundred waste wood samples and their characterisation using a hand-held NIR spectrophotometer. Three classification methods, i.e. K-nearest Neighbours (KNN), Principal Component Analysis - Linear Discriminant Analysis (PCA-LDA) and PCA-KNN, have been compared to develop models for the sorting of waste wood in quality categories according to the best-suited reuse. In addition, the classification performance has been investigated as a function of the number of the spectral measurements of the sample and as the average of the spectral measurements. The results showed that PCA-KNN performs better than the other classification methods, especially when the material is ground to 5 cm of particle size and the spectral measurements are averaged across replicates (classification accuracy: 90.9 %). NIR spectroscopy, coupled with chemometrics, turned out to be a promising tool for the real-time sorting of waste wood material, ensuring a more accurate and sustainable waste wood management. Obtaining real-time information about the quality and characteristics of waste wood material translates into a decision of the best recycling option, increasing its recycling potential.

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Crossref · 10.1016/j.wasman.2024.02.033

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Research works printed but not linked: 3

  1. Deroubaix, G., 2013. Optimisation of material recycling and energy recovery from waste and demolition wood in different value chains (FCBA). 5th WWNet Symposium (2013) (February) 235066.
  2. Mantau, U., Saal, U., Prins, K., Steierer, F., Lindner, M., Verkerk, H., Eggers, J., Leek, N., Oldenburger, J., Asikainen, A., 2010. EUwood–real potential for changes in growth and use of EU forests. Final report. Hamburg/Germany, June 2010. 165 p. 10.13140/2.1.3372.0642. · DOI
  3. Vis, M., Mantau, U., Allen, B., Essel, R., Reichenbach, J., 2016. CASCADES, Study on the optimised cascading use of wood. Vol. no 394/PP/. Publications Office. Doi: 10.2873/827106. · DOI

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Authors
Mancini, M., Taavitsainen, V.-M., & Rinnan, Å.
Affiliations
  • Marche Polytechnic University (IT)
  • Lappeenranta-Lahti University of Technology (FI)
  • University of Copenhagen (DK)
Corresponding author
Mancini, Manuela
Venue
Waste Management
Publisher
Elsevier BV
Published
2024-04
Volume
178
Pages
321-330
ISSN
0956-053X (ISSN-L)
OpenAlex
W4392438809
Cited by
21
References
40
Citations by year
2026: 9 · 2025: 7 · 2024: 5
FWCI
3.51
Type
journal article
Language
en
Open access
Locations
  • Waste Management (publishedVersion, cc-by)
  • SSRN Electronic Journal (acceptedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by)
  • Università Politecnica delle Marche (Università Politecnica delle Marche) (submittedVersion, cc-by)
Funders
  • Horizon 2020 Framework Programme
  • Horizon 2020
  • Horizon 2020 Marie Skłodowska-Curie Actions (838560)
Topics
  • Physical Sciences › Chemistry › Analytical Chemistry › Spectroscopy and Chemometric Analyses
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Municipal Solid Waste Management
  • Social Sciences › Arts and Humanities › Archeology › Cultural Heritage Materials Analysis
Keywords
wood waste, wood recycling, near-infrared spectroscopy, classification methods, k-nearest neighbors, PCA-LDA, real-time sorting, timber grading, particle size, chemometrics
MeSH terms
Waste Products, Wood, Discriminant Analysis, Waste Management, Spectroscopy, Near-Infrared, Recycling

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