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Influence of control parameters in VOCs evolution during MSW trimming residues composting

AuthorsDelgado Rodríguez, Margarita; Ruiz Montoya, M.; Giráldez, I.; López Núñez, Rafael ; Madejón, Engracia ; Díaz, M. J.
Issue Date2011
PublisherAmerican Chemical Society
CitationJournal of Agricultural and Food Chemistry 59(24): 13035-13042 (2011)
AbstractThe influence of control parameters (aeration, moisture, and C/N ratio) during composting of a municipal solid waste (MSW)-legume-trimming residue (LTR) mixture was studied at a pilot plant scale. Factors measured included the composition of the main volatile organic carbons (VOCs) emitted including limonene, β-pinene, 2-butanone, undecane, phenol, toluene, and dimethyl disulfide. Polynomial models were found to reproduce the experimental results with errors at less than 10%. The relative influence of the independent variables on temperature and selected VOCs followed the order: aeration > moisture > C/N. A high aeration rate results in higher (strong negative effect) values on selected VOCs emissions (41-71% on emitted VOCs variation). Moisture had a positive and negative effect depending on the selected VOCs. A high C/N ratio caused lower production of VOCs except for undecane and 2-butanone. Providing an aerobic environment (0.05 Lair kg-1 min -1), high C/N ratios (>50), and medium moisture (55%) minimize emitted VOCs during MSW composting, ultimately resulting in less odors in the surrounding environment.
Identifiersdoi: 10.1021/jf2036017
issn: 0021-8561
e-issn: 1520-5118
Appears in Collections:(IRNAS) Artículos
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