Document Detail

Assessment of maturity degree of composts from domestic solid wastes by fluorescence and Fourier transform infrared spectroscopies.
MedLine Citation:
PMID:  11743777     Owner:  NLM     Status:  MEDLINE    
Methods of assessment of compost maturity are needed so the application of composted materials to lands will provide optimal benefits. The aim of the present paper is to assess the maturity reached by composts from domestic solid wastes (DSW) prepared under periodic and permanent aeration systems and sampled at different composting time, by means of excitation-emission matrix (EEM) fluorescence spectroscopy and Fourier transform infrared spectroscopy (FT-IR). EEM spectra indicated the presence of two different fluorophores centered, respectively, at Ex/Em wavelength pairs of 330/425 and 280/330 nm. The fluorescence intensities of these peaks were also analyzed, showing trends related to the maturity of composts. The "contour density" of EEM maps appeared to be strongly reduced with composting days. After 30 and 45 days of composting, FT-IR spectra exhibited a decrease of intensity of peaks assigned to polysaccharides and in the aliphatic region. EEM and FT-IR techniques seem to produce spectra that correlate with the degree of maturity of the compost. Further refinement of these techniques should provide a relatively rapid method of assessing the suitability of the compost to land application.
M R Provenzano; S C de Oliveira; M R Silva; N Senesi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  49     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2001 Dec 
Date Detail:
Created Date:  2001-12-17     Completed Date:  2002-02-26     Revised Date:  2006-04-06    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5874-9     Citation Subset:  IM    
Dipartimento di Biologia e Chimica Agroforestale e Ambientale, Via Amendola 1665/a, University of Bari, Bari, Italy.
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MeSH Terms
Carbon / analysis
Chemistry, Organic / methods
Nitrogen / metabolism
Spectrometry, Fluorescence / methods
Spectroscopy, Fourier Transform Infrared / methods
Waste Products / analysis*
Reg. No./Substance:
0/Waste Products; 7440-44-0/Carbon; 7727-37-9/Nitrogen

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