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DOI10.1016/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
ISSN0304-3894
EISSN1873-3336
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
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
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. 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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