Maturity degree of composts from municipal solid wastes evaluated by differential scanning calorimetry

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDe Oliveira, S. C.
dc.creatorProvenzano, M. R.
dc.creatorSantiago Silva, M. R.
dc.creatorSenesi, N.
dc.date2014-05-27T11:20:35Z
dc.date2016-10-25T18:18:19Z
dc.date2014-05-27T11:20:35Z
dc.date2016-10-25T18:18:19Z
dc.date2002-12-09
dc.date.accessioned2017-04-06T01:04:35Z
dc.date.available2017-04-06T01:04:35Z
dc.identifierEnvironmental Technology, v. 23, n. 10, p. 1099-1105, 2002.
dc.identifier0959-3330
dc.identifierhttp://hdl.handle.net/11449/67146
dc.identifierhttp://acervodigital.unesp.br/handle/11449/67146
dc.identifier10.1080/09593332308618340
dc.identifierWOS:000179811200003
dc.identifier2-s2.0-0036441107
dc.identifierhttp://dx.doi.org/10.1080/09593332308618340
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/888631
dc.descriptionDifferential scanning calorimetry (DSC) in association with chemical analysis was applied to assess the maturity reached by the organic fraction of Municipal Solid Wastes (MSW) subjected to composting processes with manual and fixed aeration and sampled at different composting times. Thermograms showed that the difference in the treatments, i.e., the manual aeration and the fixed aeration, had no relevant effect on the stabilization and maturation of OM in the substrates. Common thermal effects observed were: a low temperature endotherm assigned to dehydration and/or loss of peripheral polysaccharides chains; a medium temperature exotherm assigned to loss of peptidic structures, and a high temperature exotherm assigned to oxydation and polycondensation of aromatic nuclei of the molecule. Results obtained suggest that in the experimental conditions used, a shorter time of composting (about 30 d) appears adequate, in order to limit the extended mineralization of OM, whereas a prolonged composting time (up to 132 d) would produce a compost of poor quality with high ash content and low OM content.
dc.languageeng
dc.relationEnvironmental Technology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCompost
dc.subjectDifferential scanning calorimetry
dc.subjectMaturity degree
dc.subjectOrganic matter
dc.subjectorganic matter
dc.subjectpeptide
dc.subjectpolysaccharide
dc.subjectcalorimetry
dc.subjectcompost
dc.subjectmunicipal solid waste
dc.subjectaeration
dc.subjectash
dc.subjectchemical analysis
dc.subjectchemical parameters
dc.subjectchemical reaction
dc.subjectcomposting
dc.subjectconcentration (parameters)
dc.subjectcontrolled study
dc.subjectdehydration
dc.subjectdifferential scanning calorimetry
dc.subjectintermethod comparison
dc.subjectmineralization
dc.subjectoxidation
dc.subjectpolymerization
dc.subjectsolid waste management
dc.subjecttemperature sensitivity
dc.subjectthermography
dc.subjecttime
dc.subjectBiodegradation, Environmental
dc.subjectCalorimetry, Differential Scanning
dc.subjectHumic Substances
dc.subjectModels, Theoretical
dc.subjectOxygen
dc.subjectRefuse Disposal
dc.subjectTemperature
dc.subjectFraxinus
dc.titleMaturity degree of composts from municipal solid wastes evaluated by differential scanning calorimetry
dc.typeOtro


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