Dioxin levels in wood combustion—a review

Lavric, Elena Daniela; Konnov, Alexander A.; Ruyck, Jacques De

doi:10.1016/s0961-9534(03)00104-1

Cited by 178 publications

(107 citation statements)

References 40 publications

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“…Several authors documented that burning wood at low temperature with low burning efficiency may increase PCDD/PCDF emissions (Dyke et al, 1997;Lavric et al, 2004;Vikelsoe and Andersen, 2004).…”

Section: Pcdd/pcdf Seasonal Variationmentioning

confidence: 99%

Monitoring of ambient air PCDD/F levels in Portugal

Coutinho¹,

Pereira²,

Borrego

2007

Chemosphere

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As part of a monitoring program conducted by IDAD -Institute for Environment and Development and supported by regional municipal solid waste (MSW) management authorities, dioxin concentrations in ambient air were measured in three regions of Portugal: Porto, Lisbon and Madeira. These independent studies were performed with the intention of providing data as a basis for the evaluation of potential impacts of the operation of recently built MSW incinerators. Thus, 170 samples were collected in nine different sites from January 1999 till present. The measured levels revealed an extremely variable content of PCDDs/PCDFs depending both on the area and the season of the year. Samples taken in Porto and Lisbon reveal a similar homologue structure even if concentrations measured in the Porto region are significantly greater. Data from Madeira is characteristic of a remote site with some of the congeners concentrations below the detection limit.

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Section: Pcdd/pcdf Seasonal Variationmentioning

confidence: 99%

Monitoring of ambient air PCDD/F levels in Portugal

Coutinho¹,

Pereira²,

Borrego

2007

Chemosphere

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“…The polychlorinated dibenzofurans (PCDFs) are among the most notorious environmental pollutants, and the main source of PCDFs is biomass burning (6)(7)(8)(9)16). Nonchlorinated furans and PCDFs have been shown to be kinetically linked (17,18).…”

mentioning

confidence: 99%

Formation and emission of large furans and oxygenated hydrocarbons from flames

Johansson

Dillstrom

Monti

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

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Many oxygenated hydrocarbon species formed during combustion, such as furans, are highly toxic and detrimental to human health and the environment. These species may also increase the hygroscopicity of soot and strongly influence the effects of soot on regional and global climate. However, large furans and associated oxygenated species have not previously been observed in flames, and their formation mechanism and interplay with polycyclic aromatic hydrocarbons (PAHs) are poorly understood. We report on a synergistic computational and experimental effort that elucidates the formation of oxygen-embedded compounds, such as furans and other oxygenated hydrocarbons, during the combustion of hydrocarbon fuels. We used ab initio and probabilistic computational techniques to identify low-barrier reaction mechanisms for the formation of large furans and other oxygenated hydrocarbons. We used vacuum-UV photoionization aerosol mass spectrometry and X-ray photoelectron spectroscopy to confirm these predictions. We show that furans are produced in the high-temperature regions of hydrocarbon flames, where they remarkably survive and become the main functional group of oxygenates that incorporate into incipient soot. In controlled flame studies, we discovered ∼100 oxygenated species previously unaccounted for. We found that large alcohols and enols act as precursors to furans, leading to incorporation of oxygen into the carbon skeletons of PAHs. Our results depart dramatically from the crude chemistry of carbonand oxygen-containing molecules previously considered in hydrocarbon formation and oxidation models and spearhead the emerging understanding of the oxidation chemistry that is critical, for example, to control emissions of toxic and carcinogenic combustion by-products, which also greatly affect global warming.furans | oxygenated hydrocarbons | soot | organic carbon | black carbon

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“…The highest concentrations of dioxins are noted from the combustion of ammonium chloride hardened plywood or PVC-coated plywood. Measurement of PCDD and PCDF emissions showed that their concentrations in air ranged from 0.005 to 4 ng I-TEQ (International Toxic Equivalents)/m 3 (Lavric et al, 2004).…”

Section: Treatment Of Waste Products and Serviced Woodsmentioning

confidence: 99%

Adhesives based on formaldehyde – environmental problems

Wojtkowska¹,

Załęska-Radziwiłł²,

Tabernacka³

2017

bta

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Adhesives are substances that increase the surface adhesion of bonded items. Unfortunately, they also emit volatile organic compounds (VOCs) which negatively impact upon human and animal health. VOCs have carcinogenic and mutagenic properties and can cause migraines, irritation to the eyes, nasal passages, mouth, and lungs, and respiratory problems. Wastewater from adhesive production is characterized by high levels of pollutants and contains high concentrations of compounds including formaldehyde that are toxic to water biocenoses. Moreover, its purification causes many problems and requires the application of specific methods. This review presents data concerning the toxicity and ecotoxicity of selected adhesives components. VOC emission rates from adhesives and wooden construction elements with adhesives are also discussed and assessed. Current knowledge on the treatment methods for wastewater containing adhesive components is reviewed. Finally, the treatment and disposal methods for solid wooden waste containing adhesives are also analyzed and discussed.

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Dioxin levels in wood combustion—a review

Cited by 178 publications

References 40 publications

Monitoring of ambient air PCDD/F levels in Portugal

Monitoring of ambient air PCDD/F levels in Portugal

Formation and emission of large furans and oxygenated hydrocarbons from flames

Adhesives based on formaldehyde – environmental problems

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