Recovering Volatilized Salts from MSWI Fly Ash into Different Metal Species with High Purifies DOI

YeJia Lv,

Zixiang Cai,

Huyan Huo

et al.

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 31, 2024

Thermal sintering/melting technology is a hot topic for the treatment of municipal solid waste incineration with fly ash (FA) nowadays. Most attention focused on safety treated FA, but seldom focus put separation thermally volatile metal salts. In this work, we investigated thermal-sediment control method effective Zn, Pb, Cu, Cd, K, and Na from FA. Volatilized solids collected different sediment zones (according to their distances FA source) are compared in detail under controlling gas flow rates heating temperatures. As result, 52 wt % Cd 54 Pb first separated zones, 53 Zn Cu second zones. Finally, K recovered together. purities as high 93–94 %. What more, recovery metals follow order 90 (Pb) > 83 (Zn) 81 (Cd) 77 (Cu) 73 (Na) 66 (K). A volatilization-condensation mechanism forward explain The main result work helps development "zero-waste city" concept, which also favor green circular economy.

Language: Английский

A multifunctional strategy: Lithium recovery and chlorine fixation via co-pyrolysis of spent lithium-ion batteries and chlorinated waste plastics DOI

Wenxin Xia,

Biao Ma, Songwen Xiao

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131620 - 131620

Published: Jan. 13, 2025

Language: Английский

Citations

3
Property and Leaching Toxicity Changes of Fly Ash under Thermal Treatment and the Underlying Mechanism DOI Open Access
Jiayi Zheng, Shuiqing Li, Jian Su

et al.

Journal of Physics Conference Series, Journal Year: 2025, Volume and Issue: 2941(1), P. 012069 - 012069

Published: Jan. 1, 2025

Abstract Thermal treatment can achieve the solidification of heavy metals by changing physical properties and mineral phases municipal solid waste incineration (MSWI) fly ash. Taking ash from an MSWI power plant in southern China as example, this work used X-ray fluorescence, inductively coupled plasma-optical emission spectrometer, toxicity characteristic leaching procedure, thermogravimetric analysis, diffraction, energy calculation to study property changes under thermal treatment. The results showed that concentrations Pb Cd exceed standard. After at 200-1100°C, Pb, Cu, Zn first increased then decreased, while Cr (VI) constantly increased. Calcium compounds gradually decomposed formed new calcium salts. However, due low silicon content, cannot form obvious glass body. NaCl KCl converted metal oxides into chlorides, increasing their solubility also causing evaporation high temperatures. Cr(III) reacted with alkaline substances was oxidized, resulting concentration. This enhances understanding underlying mechanism guides innocuous beneficial disposal

Language: Английский

Citations

0
Effect of chlorides on the melting behavior of municipal solid waste incineration fly ash DOI

Sihua Xu,

Hong Li, Yicheng Wang

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(2), P. 116009 - 116009

Published: Feb. 27, 2025

Language: Английский

Citations

0
Sintering and carbonation mechanism of a low-lime carbonatable binder prepared with 100% municipal solid waste incineration residues DOI
Xiaoli Wang, Ming-Zhi Guo, Tung‐Chai Ling

et al.

Journal of Industrial and Engineering Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Chelation treatment for heavy metals in municipal solid waste incineration fly ash: 300-Day study on stability and environmental risk DOI
Ze Zhang, Yang Yu,

Yi Rao

et al.

Waste Management, Journal Year: 2025, Volume and Issue: 200, P. 114745 - 114745

Published: March 12, 2025

Language: Английский

Citations

0
Improved molten salt thermal treatment process for municipal waste incineration fly ash by liquid-liquid phase separation: Chloride form transition and release behavior DOI

Sihua Xu,

Hong Li, Chenguang Huang

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 125164 - 125164

Published: April 1, 2025

Language: Английский

Citations

0
Preparation of microcrystalline glass by municipal solid waste incineration fly ash: heavy metals crystallization mechanism DOI
Pengfei Zhang, Nengwu Zhu, Fei Li

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121567 - 121567

Published: April 1, 2025

Language: Английский

Citations

0
Recovering Volatilized Salts from MSWI Fly Ash into Different Metal Species with High Purifies DOI

YeJia Lv,

Zixiang Cai,

Huyan Huo

et al.

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 31, 2024

Thermal sintering/melting technology is a hot topic for the treatment of municipal solid waste incineration with fly ash (FA) nowadays. Most attention focused on safety treated FA, but seldom focus put separation thermally volatile metal salts. In this work, we investigated thermal-sediment control method effective Zn, Pb, Cu, Cd, K, and Na from FA. Volatilized solids collected different sediment zones (according to their distances FA source) are compared in detail under controlling gas flow rates heating temperatures. As result, 52 wt % Cd 54 Pb first separated zones, 53 Zn Cu second zones. Finally, K recovered together. purities as high 93–94 %. What more, recovery metals follow order 90 (Pb) > 83 (Zn) 81 (Cd) 77 (Cu) 73 (Na) 66 (K). A volatilization-condensation mechanism forward explain The main result work helps development "zero-waste city" concept, which also favor green circular economy.

Language: Английский

Citations

0