Efficiency of near-infrared reflectance spectroscopy to assess and predict the stage of transformation of organic matter in the composting process

Détails

ID Serval
serval:BIB_8F4AB2D7B9E1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Efficiency of near-infrared reflectance spectroscopy to assess and predict the stage of transformation of organic matter in the composting process
Périodique
Bioresource Technology
Auteur(s)
Albrecht R., Joffre R., Gros R., Le Petit J., Terrom G.
ISSN-L
0960-8524
Statut éditorial
Publié
Date de publication
2008
Peer-reviewed
Oui
Volume
99
Pages
448-455
Langue
anglais
Résumé
Changes in composts of sewage sludges and green wastes were analysed by near infrared reflectance spectroscopy (NIRS) and chemical analysis with 426 samples representative of six stages of composting: 8, 20, 35, 75, 135 and 180 days. Maturity of compost was assessed through changes in C:N ratio. Results of spectroscopic properties (200 wavelengths) were studied with several multivariate analyses. First, a descriptive approach revealed compost changes with time of maturation. Then, a constrained ordination (RDA with permutation tests) demonstrated a significant effect of three factors of sampling: stage of composting, depth and position in windrows. Precise calibration models between spectral data, the C, N, C:N values and composting time were build using partial least square regression (r(2) > 0.95). Together, these results show the efficiency of NIRS to predict chemical changes and the stage of transformation of organic matter during the composting process. (C) 2007 Elsevier Ltd. All rights reserved.
Création de la notice
13/09/2011 14:34
Dernière modification de la notice
03/03/2018 19:21
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