Thermal treatment of municipal solid waste incineration fly ash: Impact of gas atmosphere on the volatility of major, minor, and trace elements

التفاصيل البيبلوغرافية
العنوان: Thermal treatment of municipal solid waste incineration fly ash: Impact of gas atmosphere on the volatility of major, minor, and trace elements
المؤلفون: Mikko Heimonen, Anna Lähde, Daniel J. Lane, Narasinha J. Shurpali, Taina Nivajärvi, Hanna Koponen, Sirpa Peräniemi, Jorma Jokiniemi, Tommi Karhunen, Olli Sippula, Niko M. Kinnunen
المصدر: Waste management (New York, N.Y.). 114
سنة النشر: 2020
مصطلحات موضوعية: Chemistry, Thermodynamic equilibrium, 020209 energy, Analytical chemistry, 02 engineering and technology, Thermal treatment, Incineration, 010501 environmental sciences, Solid Waste, 01 natural sciences, Coal Ash, Carbon, Trace Elements, Chemical kinetics, Atmosphere, Fly ash, Mass transfer, Metals, Heavy, Thermal, 0202 electrical engineering, electronic engineering, information engineering, Particulate Matter, Volatilization, Waste Management and Disposal, Volatility (chemistry), 0105 earth and related environmental sciences
الوصف: Development of thermal processes for selective recovery of Zn and other valuable elements from municipal solid waste incineration (MSWI) fly ash requires comprehensive knowledge of the impact of gas atmosphere on the volatile behaviour of the element constituents of the ash at different reaction temperatures. This study assesses the partitioning of 18 elements (Al, As, Bi, C, Ca, Cd, Cl, Cu, K, Mg, Na, P, Pb, S, Sb, Sn, Ti, and Zn) between condensed and gaseous phases during thermal treatment of MSWI fly ash in both oxidising gas and reducing gas atmospheres, at different temperatures spanning the range 200–1050 °C. The operating atmosphere had major impacts on the partitioning of the following elements: As, Bi, C, Cd, Cu, Na, Pb, S, Sb, Sn, and Zn. The partitioning of these elements cannot be accurately predicted over the full range of investigated operating conditions with global thermodynamic equilibrium calculations alone, i.e. without also considering chemical kinetics and mass transfer. In oxidising conditions, the following elements were predominately retained in condensed phases, even at high temperatures: As, Bi, Sb, Sn, and Zn. All these elements, except As, were largely released to the gas phase (>70%) at high temperatures in reducing conditions. The impact of gas atmosphere on the volatility of Cd and Pb was greatest at low reaction temperatures (below ~750 °C). Results for volatile matrix elements, specifically C, Cl, K, Na, and S, are interpreted in terms of the mechanisms governing the release of these elements to the gas phase.
تدمد: 1879-2456
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9020113e6008de27cab121e4904cafde
https://pubmed.ncbi.nlm.nih.gov/32622291
Rights: CLOSED
رقم الانضمام: edsair.doi.dedup.....9020113e6008de27cab121e4904cafde
قاعدة البيانات: OpenAIRE