Stabilization of APC residues from waste incineration with ferrous sulfate on a semi-industrial scale

Kasper Lundtorp, Dorthe Lærke Jensen, Thomas Højlund Christensen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A stabilization method for air pollution control (APC) residues from municipal solid waste incineration (MSWI) involving mixing of the residue with water and FeSO4 has been demonstrated on a semi-industrial scale on three types of APC residues: a semidy (SD) APC residue, a fly ash (FA), and an FA mixed with sludge (FAS) from a wet flue gas cleaning system. The process was performed in batches of 165-175 kg residue. It generates a wastewater that is highly saline but has a low content of heavy metals such as Cd, Cr, and Pb. The stabilized and raw residues have been subject to a range of leaching tests: the batch leacing test, the pH-static leaching test, the availability test, and the column test. These tests showed that the stabilized residues have remarkably improved leaching properties, especially with respect to Pb but also with respect to Cd, Cu, and Zn. The release of Pb was reduced by a factor of 250-36,000.
Original languageEnglish
JournalJournal of the Air and Waste Management Association
Volume52
Issue number6
Pages (from-to)722-731
ISSN1047-3289
Publication statusPublished - 2002

Cite this