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DOI | 10.1016/j.jhazmat.2024.134242 |
Eco-toxicological and climate change effects of sludge thermal treatments: Pathways towards zero pollution and negative emissions | |
发表日期 | 2024 |
ISSN | 0304-3894 |
EISSN | 1873-3336 |
起始页码 | 470 |
卷号 | 470 |
英文摘要 | The high moisture content and the potential presence of hazardous organic compounds (HOCs) and metals (HMs) in sewage sludge (SS) pose technical and regulatory challenges for its circular economy valorisation. Thermal treatments are expected to reduce the volume of SS while producing energy and eliminating HOCs. In this study, we integrate quantitative analysis of SS concentration of 12 HMs and 61 HOCs, including organophosphate flame retardants (OPFRs) and per- and poly-fluoroalkyl substances (PFAS), with life -cycle assessment to estimate removal efficiency of pollutants, climate change mitigation benefits and toxicological effects of existing and alternative SS treatments (involving pyrolysis, incineration, and/or anaerobic digestion). Conventional SS treatment leaves between 24 % and 40 % of OPFRs unabated, while almost no degradation occurs for PFAS. Thermal treatments can degrade more than 93% of target OPFRs and 95 % of target PFAS (with the rest released to effluents). The different treatments affect how HMs are emitted across environmental compartments. Con- ventional treatments also show higher climate change impacts than thermal treatments. Overall, thermal treatments can effectively reduce the HOCs emitted to the environment while delivering negative emissions (from about -56 to -111 kg CO 2 -eq per tonne of sludge, when pyrolysis is involved) and producing renewable energy from heat integration and valorization. |
英文关键词 | Wastewater treatment; Heavy metals; Anaerobic digestion; PFAS; Pyrolysis; OPFRs |
语种 | 英语 |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
WOS类目 | Engineering, Environmental ; Environmental Sciences |
WOS记录号 | WOS:001229780800001 |
来源期刊 | JOURNAL OF HAZARDOUS MATERIALS
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/309549 |
作者单位 | Norwegian University of Science & Technology (NTNU); Norwegian University of Science & Technology (NTNU); Norwegian Geotechnical Institute, NGI; Universidade de Santiago de Compostela; Norwegian University of Life Sciences; Chalmers University of Technology |
推荐引用方式 GB/T 7714 | . Eco-toxicological and climate change effects of sludge thermal treatments: Pathways towards zero pollution and negative emissions[J],2024,470. |
APA | (2024).Eco-toxicological and climate change effects of sludge thermal treatments: Pathways towards zero pollution and negative emissions.JOURNAL OF HAZARDOUS MATERIALS,470. |
MLA | "Eco-toxicological and climate change effects of sludge thermal treatments: Pathways towards zero pollution and negative emissions".JOURNAL OF HAZARDOUS MATERIALS 470(2024). |
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