Leaching for recovery of copper from municipal solid waste incineration fly ash: Influence of ash properties and metal speciation.
Artikel i vetenskaplig tidskrift, 2014

Recovery of metals occurring in significant amounts in municipal solid waste incineration fly ash, such as copper, could offer several advantages: a decreased amount of potentially mobile metal compounds going to landfill, saving of natural resources and a monetary value. A combination of leaching and solvent extraction may constitute a feasible recovery path for metals from municipal solid waste incineration fly ash. However, it has been shown that the initial dissolution and leaching is a limiting step in such a recovery process. The work described in this article was focused on elucidating physical and chemical differences between two ash samples with the aim of explaining the differences in copper release from these samples in two leaching methods. The results showed that the chemical speciation is an important factor affecting the release of copper. The occurrence of copper as phosphate or silicate will hinder leaching, while sulphate and chloride will facilitate leaching.

municipal solid waste incineration fly ash

X-ray absorption spectroscopy

ash properties

metal recovery

copper speciation

leaching

Författare

Henric Lassesson

Chalmers, Kemi- och bioteknik, Industriell materialåtervinning

Karin Karlfeldt Fedje

Chalmers, Bygg- och miljöteknik, Vatten Miljö Teknik

Britt-Marie Steenari

Chalmers, Kemi- och bioteknik, Industriell materialåtervinning

Waste Management and Research

0734242X (ISSN) 10963669 (eISSN)

Vol. 32 8 755-762

Ämneskategorier

Oorganisk kemi

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Materialvetenskap

DOI

10.1177/0734242X14542147

PubMed

25106538