Study on the Solidification/Stabilization of MSWI Fly Ash by Composite Alkali-Activated Cementitious Materials.

ABSTRACT: Municipal solid waste incineration (MSWI) fly ash (FA) is a hazardous waste produced during the incineration of municipal solid waste, posing a risk of heavy metal leaching and threatening the environment. Therefore, the harmless treatment of MSWI FA has become a crucial issue in environmental safety treatment. This study utilized blast furnace slag, FA, and MSWI FA to prepare composite alkali-activated cementitious materials for the solidification and stabilization of heavy metals in MSWI FA. The results showed that when the MSWI FA content was 30%, the water glass modulus was 1.0, the liquid-solid ratio was 0.32, the initial 24 h curing temperature was 45 °C, and the compressive strength of the solidified body reached 41.9 MPa, demonstrating excellent mechanical properties. Additionally,

SUBMITTER: Su P 

PROVIDER: S-EPMC11840578 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature