Polycyclic aromatic hydrocarbons in ash: determination of total and leachable concentrations.
Abstract
Before wood ash can be used as a soil fertilizer, concentrations of environmentally hazardous compounds must be investigated. In this study, total and leachable concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) were determined in four ash samples and one green liquor sludge. The ash sample with the highest carbon content also contained high levels of PAHs; three of the ash samples had total concentrations exceeding the limit permitted by the Swedish Forest Agency for recycling to forest soils. The leachable concentrations were higher for the non-stabilized samples; this was probably due to colloid-facilitated transport of the contaminants in these samples. However, the leachable concentrations were overall relatively low in all the samples studied. The amounts of PAHs introduced to forest soils by additions of stabilized, recyclable ash products will be determined primarily by the rate of weathering of the ash particles and the total concentration of contaminants.
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The type of fuel and variations in combustion temperatures and oxygen availability are thought to strongly affect the concentration and type of PAHs in ash.
“The type of fuel and variations in combustion temperatures and oxygen availability are thought to strongly affect the concentration and type of PAHs in ash (Enell et al. 2008;Rey-Salgueiro et al. 2018).”
From Chemical composition of wildfire ash produced in contrasting ecosystems and its toxicity to Daphnia magna (2019) · cites this paper as Enell et al. 2008
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- Authors
- Enell, A., Fuhrman, F., Lundin, L., Warfvinge, P., & Thelin, G.
- Affiliations
- Lund University (SE)
- Umeå University (SE)
- Corresponding author
- Enell, Anja
- Venue
- Environmental Pollution
- Publisher
- Elsevier BV
- Published
- 2008-03
- Volume
- 152
- Issue
- 2
- Pages
- 285-292
- ISSN
- 0269-7491 (ISSN-L)
- OpenAlex
- W2041536077
- Cited by
- 45
- References
- 20
- Citations by year
- 2025: 2 · 2024: 4 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 1 · 2018: 3 · 2017: 2 · 2016: 4 · 2015: 3 · 2014: 2 · 2013: 4 · 2012: 3
- FWCI
- 1.27
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Environmental Pollution (publishedVersion)
- PubMed (publishedVersion)
- Lund University Publications (Lund University) (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
- Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
- Physical Sciences › Engineering › Building and Construction › Recycling and utilization of industrial and municipal waste in materials production
- Keywords
- polycyclic aromatic hydrocarbons, wood ash, leaching, soil contamination, colloid-facilitated transport, ash stabilization, soil fertilization
- MeSH terms
- Adsorption, Environmental Monitoring, Fertilizers, Polycyclic Aromatic Hydrocarbons, Refuse Disposal, Soil Pollutants, Wood, Incineration, Particulate Matter
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