Influence of green waste, biowaste and paper-cardboard initial ratios on organic matter transformations during composting.
Bioresour Technol. 2008 Dec; 99(18):8926-34.BT

Abstract

The influence of green waste, biowaste and paper-cardboard proportions in initial mixtures on organic matter (OM) evolution during composting in pilot-scale reactors was studied using respirometric procedure, humic substance extraction, crude fiber analysis and Fourier transform infrared spectroscopy. The stabilisation of OM during composting resulted from the degradation of easily biodegradable organic fraction as cellulose and hemicellulose, the relative increase of resistant compounds as lignin, the microbial synthesis of resistant biomolecules, and from humification processes. Little stabilisation of green waste OM during composting was observed, in relation with their large lignin content. With moderate contents of paper-cardboard in initial mixtures (20-40%), cellulose proportion remained favorable to fast OM stabilisation. Larger proportions of paper-cardboard (more than 50%) affected OM stabilisation, probably due to a lack of nitrogen. The influence of biowastes only appeared at the very beginning of composting, because of their large proportions of easily biodegradable OM.

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Authors+Show Affiliations

Francou C
Institut National de la Recherche Agronomique, AgroParis Tech, UMR Environnement et Grandes Cultures, 78850 Thiverval-Grignon, France.
Linères M
No affiliation info available
Derenne S
No affiliation info available
Villio-Poitrenaud ML
No affiliation info available
Houot S
No affiliation info available

MeSH

Biodegradation, EnvironmentalBioreactorsHumic SubstancesKineticsOrganic ChemicalsPaperSoilSpectrophotometry, InfraredWaste Products

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18550366