Estimating the contribution of different pollution sources for the elevated heavy metal concentrations in recovered waste wood
(English)Manuscript (preprint) (Other academic)
One crucial problem related to the task of decreasing environmental pollution and increasing resource efficiency is that many material flows are contaminated with hazardous substances. In this paper, the contamination of heavy metals in Swedish recovered waste wood is addressed. The main objective was to estimate the contribution of heavy metals from six selected pollution sources. It is shown that the occurrence of industrial preservative-treated wood, surface-treated wood, fastening systems, plastic waste, concrete, and soil explains most of the elevated concentrations of lead, chromium, zinc, copper, and arsenic. The sources for nickel, cadmium, and mercury arc more poorly understood, although several potential sources are identified. The included pollution sources differ in the extent of their integration to wood, which influences the possibility of removing them from the main waste flow. Two waste management approaches for obtaining less polluted recovered waste wood are discussed, and the possibilities and impediments for each strategy outlined.
Waste wood, building and demolition waste, heavy metal contamination, waste management
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-102035OAI: oai:DiVA.org:liu-102035DiVA: diva2:667707