Solidification Mechanism of Pb and Cd in S2−-Enriched Alkali-Activated Municipal Solid Waste Incineration Fly Ash

• Published in: Materials Vol. 16; no. 10; p. 3728
• Main Authors: Xue, Qi, Ji, Yongsheng, Ma, Zhanguo, Zhang, Zhongzhe, Xu, Zhishan
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 14.05.2023; MDPI
• Subjects: alkali-activated cementitious material; Blast furnace chemistry; Blast furnace practice; Cadmium; Cement; Chemical bonds; Chemical composition; Dosage; Efficiency; Enrichment; Fly ash; Fourier transforms; GGBS; Granulation; heavy metal solidification; Incineration; Infrared spectroscopy; Landfill; Lead; Metals; MSWI fly ash; Municipal waste management; Particle size; Polymerization; Raw materials; S2−-enriched alkali-activated slag (SEAAS); S2−-enriched modification; Slag; Sodium; Sodium sulfide; Solid waste management; Solid wastes; Solidification; Synergistic effect; Waste disposal; X-ray fluorescence; China

S2−-enriched alkali-activator (SEAA) was prepared by modifying the alkali activator through Na2S. The effects of S2−-enriched alkali-activated slag (SEAAS) on the solidification performance of Pb and Cd in MSWI fly ash were investigated using SEAAS as the solidification material for MSWI fly ash. Co...