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Thermal analysis for the evaluation of the organic matter evolution during municipal solid waste aerobic composting process

Melis, Pietro and Castaldi, Paola (2004) Thermal analysis for the evaluation of the organic matter evolution during municipal solid waste aerobic composting process. Thermochimica Acta, Vol. 413 (1-2), p. 209-214. eISSN 1872-762X. Article.

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DOI: 10.1016/j.tca.2003.09.026

Abstract

A study aimed to monitor the composting process and to evaluate the effectiveness of indicators able to define the stability of a compost obtained by mixing municipal solid waste (MSW) and vegetal waste, was conducted. For this reason, composting process lasting 3 months, was monitored by chemical and thermal analysis. Total organic carbon (TOC), total extractable carbon (TEC) and humic and fulvic acid carbon (HA and FA, respectively) were determined after extraction, fractionation and analysis of organic matter from samples collected during the composting process. Differential scanning calorimetry (DSC), thermogravimetry (TG) and the first derivative of the TG (DTG) were simultaneously performed in oxidizing conditions on grounded compost samples and HA extracted. Thermoanalitical data resulted to be useful in integrating quantitative information coming from chemical analysis of humified fraction of compost organic matter. Particularly DSC curves allowed to distinguish between well and poor stabilized organic matter, and information deriving from weight losses, registered by the TG and DTG curves, enable to individuate the evolution state of the organic matter and therefore its stability.

Item Type:Article
ID Code:7322
Status:Published
Refereed:Yes
Uncontrolled Keywords:Compost stabilization, humification parameters, thermogravimetry, differential scanning calorimetry
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/13 Chimica agraria
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze ambientali agrarie e biotecnologie agro-alimentari
Publisher:Elsevier
eISSN:1872-762X
Copyright Holders:© 2003 Elsevier B.V.
Deposited On:03 Apr 2012 17:26

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