Abhandlung über die Rückstände der Hausmüllverbrennung

Chandler, A. J.; Eighmy, T. Taylor; Hartlén, Jan; Hjelmar, O.; Kosson, David S.; Sawell, S.E.; Sloot, H.A. van der; Vehlow, J.

doi:10.1007/978-1-4899-3806-0_303

Cited by 6 publications

(11 citation statements)

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“…It can be seen from Figure 2 that APC residues have a particle size distribution of 2 to 110 μm, with the most prevalent residue particle size by frequency being about 10 μm in diameter. The bulk density, moisture content and LOI results were consistent with literature data [2], and tabulated in Table 1. Table 1: Physicochemical characteristics of APC residues.…”

Section: Physicochemical Propertiessupporting

confidence: 87%

“…Due to Singapore's limited land space, National Environment Agency (NEA)'s policy in waste management requires the incineration of all waste that cannot be recovered, reused or recycled [1]. Incineration reduces the total volume of MSW by up to 90% and is usually the preferred method to treat MSW in land scarce countries like Singapore [2]. However, incineration of MSW generates incineration bottom ash (IBA) and incineration fly ash (IFA) as end products which could lead to pollution.…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical Characterization of Singapore’ Municipal Solid Waste Air Pollution Control Residues and its Stabilization by VKI Treatment

Heng¹,

Sun²,

Liu³

et al. 2018

Int J Waste Resour

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Vandkvalitets Institute (VKI) process is a treatment technology which employs the technique of extraction and chemical stabilization on waste, targeting an end pH of 7 to 10 using water, concentrated phosphoric acid (H 3 PO 4) and carbon dioxide (CO 2) as the main stabilizing materials. Different parameters for the ash stabilization were investigated. Based on the acid neutralizing capacity (ANC) and pH-dependent leaching results of Singapore's air pollution control (APC) residues produced from a municipal solid waste (MSW) incineration plant, the main objective of this study was to examine the suitable end pH to be used to treat APC residues. After which, a two-step VKI treatment was carried out on APC residues, using CO 2 and H 3 PO 4 dosing as the two main stabilizing items. ANC results showed that there was a steep drop in pH from 10 to 7 at approximately 20.40 equivalent/kg of acid addition, while pH-dependent leaching results indicated that the most ideal pH range for the suppression of most heavy metal release was between 7 and 10. Subsequently, pH 7 was then selected as the end pH for the VKI treatment process. Under optimum conditions of 0.2 g and 0.5 g of H 3 PO 4 /100 g of APC residues (equivalent to 2 and 5 kg H 3 PO 4 /ton of residues) with a CO 2 flow rate of 1500 cm 3 /min, the treated APC residues had an end pH of around 7 after 100 and 80 minutes of treatment, respectively. Toxicity characteristic leaching procedure (TCLP) was used to evaluate the leaching of heavy metals (Cd, Cr, Cu, Pb, Zn) before and after treatment. The results showed that the leaching of Pb was significantly reduced after treatment, and was able to meet Singapore's acceptance criteria for landfill disposal. However, the leaching of Cd increased by two orders of magnitude after treatment, but was still below Singapore's acceptance criteria for landfill disposal.

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Section: Physicochemical Propertiessupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Physicochemical Characterization of Singapore’ Municipal Solid Waste Air Pollution Control Residues and its Stabilization by VKI Treatment

Heng¹,

Sun²,

Liu³

et al. 2018

Int J Waste Resour

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“…The concentration of zinc in waste and fly ash from municipal waste incineration can reach ~2 mg g −1 and ~80 mg g −1 , respectively. 5 Zinc is second to iron as the dominant contributor of transition metals in PM2.5 with concentration as high as 157 ng m −3 in some urban areas. 6,7 Particulate matter (PM) contains significant amount of transition metals that are known to produce reactive oxygen species (ROS).…”

Section: Introductionmentioning

confidence: 99%

Lifetime of combustion-generated environmentally persistent free radicals on Zn(ii)O and other transition metal oxides

2012

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Previous studies indicated that Environmentally Persistent Free Radicals (EPFRs) are formed in the post-flame, cool zone of combustion. They result from the chemisorption of gas-phase products of incomplete combustion (particularly hydroxyl- and chlorine-substituted aromatics) on Cu(II)O, Fe(III)2O3, and Ni(II)O domains of particulate matter (fly ash or soot particles). This study reports our detailed laboratory investigation on the lifetime of EPFRs on Zn(II)O/silica surface. Similarly, as in the case of other transition metals, chemisorption of the adsorbate on the Zn(II)O surface and subsequent transfer of electron from the adsorbate to the metal forms a surface-bound EPFR and a reduced metal ion center. The EPFRs are stabilized by their interaction with the metal oxide domain surface. The half-lives of EPFRs formed on Zn(II)O domains were the longest observed among the transition metal oxides studied and ranged from 3 to 73 days. These half-lives were an order of magnitude longer than those formed on nickel and iron oxides, and were 2 orders of magnitude longer compared to the EPFRs on copper oxide which have half-lives only on the order of hours. The longest-lived radicals on Zn(II)O correspond to the persistency in ambient air particles of almost a year. The half-life of EPFRs was found to correlate with the standard reduction potential of the associated metal.

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“…We studied various ratios of codisposal by mixing the fly ashes with MSW at codisposal ratios of 0 (MSW only), 8,15, and 30% by weight.…”

Section: Msw and Fly Ashmentioning

confidence: 99%

“…In addition, Rao et al 12 reported that settling decreased as the void spaces of wastes were filled with injected fly ash. Researchers in many countries have evaluated ash for their geotechnical engineering applications, [13][14][15][16][17] and with some sorting, various ashes were found to be useful as road material and as a lightweight aggregate.…”

Section: Introductionmentioning

confidence: 99%

Compressibility of Municipal Solid Waste Codisposed with Fly Ash

Park

Lee

2005

Journal of the Air & Waste Management Association

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If a municipal solid waste (MSW) landfill is used as the foundation for a construction site, the change in the loading conditions may cause considerable compression of the landfill. Therefore, reinforcement to compensate for the loose compression nature of a MSW landfill is a very important design factor for geotechnical engineers when considering the end-use of the landfill. In this study, we discuss a possible technique for stabilizing MSW landfills through the codisposal of municipal solid waste and fly ash. To estimate the stabilization based on the compression characteristics of the codisposed landfill, we performed tests using a large compression set and experimental cells. According to the test results, if the proportion of fly ash is increased, initial and long-term compression could be reduced.

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Abhandlung über die Rückstände der Hausmüllverbrennung

Cited by 6 publications

References 0 publications

Physicochemical Characterization of Singapore’ Municipal Solid Waste Air Pollution Control Residues and its Stabilization by VKI Treatment

Physicochemical Characterization of Singapore’ Municipal Solid Waste Air Pollution Control Residues and its Stabilization by VKI Treatment

Lifetime of combustion-generated environmentally persistent free radicals on Zn(ii)O and other transition metal oxides

Compressibility of Municipal Solid Waste Codisposed with Fly Ash

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