Structural parts based on Municipal-Solid-Waste incineration ashes

Waste Manag. 2022 Aug 1:150:185-190. doi: 10.1016/j.wasman.2022.07.004. Epub 2022 Jul 14.

Abstract

We investigated a novel processing technique of municipal solid waste incineration (MSWI) ashes. By using two thermodynamic driving forces - a strong alkaline activator and a compaction pressure, the otherwise relatively nonreactive MSWI ashes could form strong solids, with relatively high flexural and compressive strengths. The produced material was dense, with a low defect density. The effects of the compaction pressure range, the alkaline activator amount, and the MSWI fly ash to bottom ash ratio were examined. We also used 5 wt% class-C fly ash, 5 wt% class-F fly ash, and/or 1 wt% epoxy as additives. This study may open a door to advanced MSWI ash upcycling approaches, useful to environmental preservation and sustainability.

Keywords: Compaction; Incineration ash; Municipal solid waste; Structural materials; Upcycling.

MeSH terms

  • Carbon
  • Coal Ash / chemistry
  • Epoxy Resins
  • Incineration
  • Metals, Heavy* / analysis
  • Refuse Disposal*
  • Solid Waste / analysis

Substances

  • Coal Ash
  • Epoxy Resins
  • Metals, Heavy
  • Solid Waste
  • Carbon