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DOI10.1016/j.jclepro.2024.141013
Upcycling MSWI fly ash into green binders via flue gas-enhanced wet carbonation
发表日期2024
ISSN0959-6526
EISSN1879-1786
起始页码440
卷号440
英文摘要Municipal solid waste incineration (MSWI) fly ash is a type of hazardous waste generated from waste incineration plants. This study developed a novel approach that recycled MSWI fly ash into eco-friendly binders via flue gas-enhanced wet carbonation treatment. During various washing processes, potentially toxic elements (PTEs) in MSWI fly ash showed different leaching patterns and pH dependence. Results suggested that 30 min flue gas-enhanced washing (optimal pH = similar to 10.5) was favourable for immobilization of PTEs as well as sequestration of CO2 (12 wt %). The 28-day compressive strength of the pastes with 30 wt % flue gas-washed MSWI fly ash reached 84.2 MPa, which was significantly higher than the control pastes. Most of the PTEs, chlorides were effectively stabilised and solidified in the matrix. Compared to the cement-based binder, the cost of an alternative binder with 30 wt % flue gas-washed MSWI fly ash was -229.6 USD/m(3), and the carbon emissions could be reduced by 36.1 %. Therefore, recycling carbonated MSWI fly ash into green binders exhibits a huge potential to close the waste cycle and mitigate climate change.
英文关键词MSWI fly ash; CO2-enhanced washing; Supplementary cementitious materials; Hazardous waste management; Heavy metal leachability; Sustainable construction materials
语种英语
WOS研究方向Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS类目Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS记录号WOS:001177158900001
来源期刊JOURNAL OF CLEANER PRODUCTION
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/294205
作者单位Zhejiang University; Hong Kong University of Science & Technology; Hunan University; Zhejiang University of Technology
推荐引用方式
GB/T 7714
. Upcycling MSWI fly ash into green binders via flue gas-enhanced wet carbonation[J],2024,440.
APA (2024).Upcycling MSWI fly ash into green binders via flue gas-enhanced wet carbonation.JOURNAL OF CLEANER PRODUCTION,440.
MLA "Upcycling MSWI fly ash into green binders via flue gas-enhanced wet carbonation".JOURNAL OF CLEANER PRODUCTION 440(2024).
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