کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6355176 | 1315032 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An LCA model for waste incineration enhanced with new technologies for metal recovery and application to the case of Switzerland
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کلمات کلیدی
Life cycle assessment (LCA) - ارزیابی چرخه حیاتIndustrial ecology - اکولوژی صنعتیEnergy recovery - بازیابی انرژیMetal recovery - بازیابی فلزFly ash - خاکستر بادی یا فلای اشCarbon footprint - ردپای کربنSlag - سربارهMunicipal solid waste incineration - سوزاندن زباله های شهریWaste management - مدیریت پسماند یا مدیریت زباله
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A process model of municipal solid waste incinerators (MSWIs) and new technologies for metal recovery from combustion residues was developed. The environmental impact is modeled as a function of waste composition as well as waste treatment and material recovery technologies. The model includes combustion with a grate incinerator, several flue gas treatment technologies, electricity and steam production from waste heat recovery, metal recovery from slag and fly ash, and landfilling of residues and can be tailored to specific plants and sites (software tools can be downloaded free of charge). Application of the model to Switzerland shows that the treatment of one tonne of municipal solid waste results on average in 425Â kg CO2-eq. generated in the incineration process, and 54Â kg CO2-eq. accrue in upstream processes such as waste transport and the production of operating materials. Downstream processes, i.e. residue disposal, generates 5Â kg CO2-eq. Savings from energy recovery are in the range of 67 to 752Â kg CO2-eq. depending on the assumptions regarding the substituted energy production, while the recovery of metals from slag and fly ash currently results in a net saving of approximately 35Â kg CO2-eq. A similar impact pattern is observed when assessing the MSWI model for aggregated environmental impacts (ReCiPe) and for non-renewable resource consumption (cumulative exergy demand), except that direct emissions have less and no relevance, respectively, on the total score. The study illustrates that MSWI plants can be an important element of industrial ecology as they provide waste disposal services and can help to close material and energetic cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 34, Issue 2, February 2014, Pages 378-389
Journal: Waste Management - Volume 34, Issue 2, February 2014, Pages 378-389
نویسندگان
Michael E. Boesch, Carl Vadenbo, Dominik Saner, Christoph Huter, Stefanie Hellweg,