Characterization of gaseous emissions and ashes from the combustion of furniture waste

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Title: Characterization of gaseous emissions and ashes from the combustion of furniture waste
Authors: Moreno Caballero, Ana Isabel | Font, Rafael | Conesa, Juan A.
Research Group/s: Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Combustion | Furniture waste | Nitrogenated compounds | PCDD | Fs | PCBs | Organic pollutants
Knowledge Area: Ingeniería Química
Issue Date: Dec-2016
Publisher: Elsevier
Citation: Waste Management. 2016, 58: 299-308. doi:10.1016/j.wasman.2016.09.046
Abstract: Gaseous emissions and ash obtained in the combustion of furniture waste have been studied, with particular emphasis on the emissions of hazardous pollutants, such as PCDD/Fs and dl-PCBS. Two different combustion procedures were carried out, one of them in a conventional residential stove (without an automatic control of combustion air and bad mixing of combustion gases with air), and the other in a laboratory-scale reactor (operating under substoichiometric conditions). Three different experiments were carried out in the residential stove, in which the gaseous emissions and ashes obtained were analysed. The fuel burnt out in two of the experiments was furniture wood waste and in one of the experiments, the fuel burnt out was briquettes composed of a mixture of furniture wood with 10 wt.% of polyurethane foam. One of the purposes of these experiments was the evaluation of the possible inhibition effect of the higher nitrogen content on the formation of PCDD/Fs. Slight inhibition of the PCDD/F formation was found although, it is noteworthy that the lowest yield of PAHs, volatile and semi-volatile compounds were obtained in the combustion of these briquettes. In all experiments, the emission factors of polychlorinated dibenzo-p-dioxins and dibenzofurans and dioxin-like polychlorinated biphenyls (PCDD/Fs and dl-PCBs) were between 29 and 74 ng WHO-TEQ/kg sample burnt, lower than that obtained by other authors in the burning of pine needles and cones. PCDD/Fs and dl-PCBs emissions from furniture wood waste combustion were also analysed in the laboratory scale reactor at 850 °C and the results were compared with the values obtained from the combustion of solid wood (untreated wood). The total equivalent toxicity obtained was 21.1 ng WHO-TEQ/kg sample for combustion of furniture wood waste, which is low in comparison with those obtained for other waste combustion in similar conditions. In the laboratory scale reactor, PCDFs were the dominant compounds in the profiles of PCDD/Fs, by contrast, in the combustion in the residential stove, the majority compounds were PCDDs, due to the different operation conditions.
Sponsor: Support for this work was provided by the Spanish Ministerio de Economia y Competividad, Research Project CTQ2013-41006-R (Spain), and PROMETEOII/2014/007 from Conselleria d’Educació, Cultura i Esport (Generalitat Valenciana, Spain). Authors also acknowledge Univ. of Alicante for financial support through UAUSTI15-04.
ISSN: 0956-053X (Print) | 1879-2456 (Online)
DOI: 10.1016/j.wasman.2016.09.046
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2016 Elsevier Ltd.
Peer Review: si
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Appears in Collections:INV - REMAN - Artículos de Revistas

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