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Imaging spectroscopy based strategies for ceramic glass contaminants removal in glass recycling

Imaging spectroscopy based strategies for ceramic glass contaminants removal in glass recycling

Authors :
Bonifazi, Giuseppe
Serranti, Silvia
Source :
Waste Management. Jun2006, Vol. 26 Issue 6, p627-639. 13p.
Publication Year :
2006

Abstract

Abstract: The presence of ceramic glass contaminants in glass recycling plants reduces production quality and increases production costs. The problem of ceramic glass inspection is related to the fact that its detectable physical and pictorial properties are quite similar to those of glass. As a consequence, at the sorting plant scale, ceramic glass looks like normal glass and is detectable only by specialized personnel. In this paper an innovative approach for ceramic glass recognition, based on imaging spectroscopy, is proposed and investigated. In order to define suitable inspection strategies for the separation between useful (glass) and polluting (ceramic glass) materials, reference samples of glass and ceramic glass presenting different colors, thicknesses, shapes and manufacturing processes have been selected. Reflectance spectra have been obtained using two equipment covering the visible and near infrared wavelength ranges (400–1000 and 1000–1700nm). Results showed as recognition of glass and ceramic glass is possible using selected wavelength ratios, in both visible and near infrared fields. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
0956053X
Volume :
26
Issue :
6
Database :
Academic Search Index
Journal :
Waste Management
Publication Type :
Academic Journal
Accession number :
20639359
Full Text :
https://doi.org/10.1016/j.wasman.2005.06.004