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    The reduction of greenhouse gas (GHG) emissions from solid waste incinerator fly ash (IFA) management attracts growing interests since China's zero-waste plan and carbon peak/neutral goals. Herein, provincial GHG emissions from four demonstrated IFA reutilization technologies in China were estimated after analyzing IFA spatial-temporal distribution. Results indicate that technologies transition (landfilling-to-reutilization) could reduce GHG except for glassy slag production. IFA to cement option could potentially realize negative GHG emissions. Spatial GHG variation drivers in IFA management were recognized as provincial-different IFA composition and power emission factors. IFA management options were recommended provincially after weighting local development goals related to GHG reduction and economic benefits. Baseline scenario analysis shows that China's IFA industry would reach carbon peak in 2025 (5.02 Mt). 2030's GHG reduction potential (6.12 Mt) is equivalent to that of absorbed CO2 by 340 million trees annually. Overall, this research could contribute to illustrating future market layout complying with carbon peaking. Copyright © 2023 Elsevier B.V. All rights reserved.


    Yunqi Zhai, Fang Liu, Yifan Hu, Lei Wang, Xuebin Lu, Zhihao Yu, Hanqiao Liu, Rui Zhang. Regional CO2 accounting and market layout of incinerator fly ash management in China. The Science of the total environment. 2023 Jul 10;881:163336

    PMID: 37030374

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