Characterization of lead, chromium, and cadmium in dust emitted from municipal solid waste incineration plants

Shiota, Kenji; Imai, Genya; Oshita, Kazuyuki; Takaoka, Masaki

doi:10.1088/1742-6596/430/1/012095

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…Smoothing was also undertaken 10 times for the same reason . The speciation of Cs by μ-XAFS was used in the linear combination fit (LCF) technique, in which an unknown spectrum fits a linear combination of reference spectra. ,− We used the spectra of CsCl, Cs 2 CO 3 , and Pollucite as references in the LCF using the REX2000 analysis software (version 2.6, Rigaku Corporation, Tokyo, Japan). We chose CsCl and pollucite because previous incineration experiments , using waste with Cs compounds added and thermodynamic equilibrium calculations − have indicated that Cs is possibly present as CsCl in MSWI fly ash and aluminosilicate in SSI fly ash.…”

Section: Methodsmentioning

confidence: 99%

“…In this study, the direct speciation of stable Cs in dust from MSWI and SSI, with no addition of Cs, was attempted by micro X-ray fluorescence (μ-XRF) and micro fluorescence yield-X-ray absorption fine structure (μ-XRF-XAFS) from synchrotron radiation (SR). XAFS is used for speciation of Cs and other elements in incineration residues. ,,− In the bulk analysis of Cs in incineration residue, a considerably higher concentration of Ti (1–2 wt %) or Sb (a few thousand mg/kg) than of Cs (a few mg/kg) in the residues and incident X-ray scatter produces a high background, which makes collecting XAFS spectra difficult at both the Cs L and Cs K-edge (Figure ). The speciation of Cs in bulk MSWI fly ash was difficult because of the obstruction by coexisting elements (i.e., Sb when using XAFS).…”

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confidence: 99%

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Cesium Speciation in Dust from Municipal Solid Waste and Sewage Sludge Incineration by Synchrotron Radiation Micro-X-ray Analysis

et al. 2015

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The chemical behavior of Cs in waste incineration processes is important to consider when disposing of radionuclide-contaminated waste from the Fukushima Daiichi nuclear power plant accident in Japan. To determine the speciation of Cs, we attempted the direct speciation of trace amounts of stable Cs in the dust from municipal solid waste incineration (MSWI) and sewage sludge incineration (SSI) by micro-X-ray fluorescence (μ-XRF) and micro-X-ray absorption fine structure (μ-XAFS) at the SPring-8 facility. The μ-XRF results revealed that locally produced Cs was present in MSWI and SSI dust within the cluster size range of 2-10 μm. The μ-XAFS analysis confirmed that the speciation of Cs in MSWI dust was similar to that of CsCl, while in SSI dusts it was similar to pollucite. The solubility of Cs was considered to be influenced by the exact Cs species present in incineration residue.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

Cesium Speciation in Dust from Municipal Solid Waste and Sewage Sludge Incineration by Synchrotron Radiation Micro-X-ray Analysis

et al. 2015

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“…These studies mainly focus on the emission characteristics of heavy metals (e.g., Hg, Pb, Cd, etc. ), ,, toxic organic compounds [e.g., dioxins, volatile organic compounds (VOCs), etc. ], − and inorganic acidic gases (e.g., HCl, HF, etc.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Particulate Matter in a Municipal Solid Waste Incinerator: Probing into the Effects of a Rotary Spray Semi-dry Scrubber and a Baghouse

Liu

et al. 2021

Energy Fuels

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Systemic field measurements of PM 10 were carried out on a grate-type municipal solid waste (MSW) incinerator to investigate the formation characteristics of PM 10 and the effects of a semi-dry flue gas deacidification scrubber (lime slurry spraying and activated carbon powder injection) and a baghouse on its emission. The particle size distribution (PSD), mass concentration, chemical composition, and micromorphology of PM 10 in the flue gas at the scrubber inlet, the scrubber outlet, and the baghouse outlet were comprehensively determined. The results showed that the PSD of PM 10 formed from MSW incineration was tri-modal. The peak of PM in the central mode (0.3−3 μm) was dramatically higher than that of either the ultrafine mode or the coarse mode, most possibly due to the high contents of volatile mineral matter (e.g., Na and Cl) and nanomaterial-/micro-material-containing wastes in the MSW fuels. The mass yields of PM 1 , PM 2.5 , and PM 10 decreased by 28.24, 59.26, and 53.91%, respectively, after passing through the semi-dry scrubber; however, some new particles formed from the slurry droplet. The baghouse could effectively remove the PM with the removal efficiencies for PM 1 , PM 2.5 , and PM 10 being over 99.95%. Comparatively speaking, more PM 2.5 was generated in the combustion of MSWs than agroforestry or coal in the furnace.

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Measurement and modeling of heavy metal behaviors during the incineration of RDF in a pilot-scale kiln incinerator-Part 1: Modeling using multizonal thermodynamic equilibrium calculation

Yui

Kuramochi

Osako

2021

Process Safety and Environmental Protection

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Characterization of lead, chromium, and cadmium in dust emitted from municipal solid waste incineration plants

Cited by 5 publications

References 6 publications

Cesium Speciation in Dust from Municipal Solid Waste and Sewage Sludge Incineration by Synchrotron Radiation Micro-X-ray Analysis

Cesium Speciation in Dust from Municipal Solid Waste and Sewage Sludge Incineration by Synchrotron Radiation Micro-X-ray Analysis

Evolution of Particulate Matter in a Municipal Solid Waste Incinerator: Probing into the Effects of a Rotary Spray Semi-dry Scrubber and a Baghouse

Measurement and modeling of heavy metal behaviors during the incineration of RDF in a pilot-scale kiln incinerator-Part 1: Modeling using multizonal thermodynamic equilibrium calculation

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