Characteristic of polychlorinated dibenzo-p-dioxins and dibenzofurans in fly ash from incinerators in china

Chen, T.; Yan, Jun; Lu, Shengyong; Li, X.D.; Gu, Yueling; Dai, Hui-fen; Ni, Mingjiang; Cen, Ke Fa

doi:10.1016/j.jhazmat.2007.04.131

Cited by 101 publications

(43 citation statements)

References 13 publications

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“…A capillary column DB-5ms (60 m × 0.25 mm I.D., 0.25 µm film thickness) was used for the separation of the PCDD/Fs congeners. The temperature program of the gas chromatograph was optimized following the findings of Chen et al (2008): a splitless injection of 1 µl at the initial temperature of 150°C for 1 min was followed by the gradual temperature increase at 25 °C min -1 to 190°C and the final increase at 3 °C min -1 to 280°C, where the sample was kept for 20 min. The mean recoveries of the standards for PCDD/Fs ranged 55-125%, which was within the acceptable range of 25-150%.…”

Section: Pcdd/fs Analysismentioning

confidence: 99%

Suppression of PCDD/Fs by Raw Meal in Cement Kilns

Lin

Ji²,

Zhan

et al. 2018

Aerosol Air Qual. Res.

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Raw meal of the cement production process could probably suppress the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). In this study, these suppression effects were studied and compared during the co-processing of municipal solid waste (MSW) with conventional feed materials such as pure CaCO 3 , and pure CaO. A top suppression efficiency of 96% was achieved for a ratio of MSW to raw meal of 1:15. Moreover, NaCl and CuCl 2 were added to the mix of feed material and MSW, to reveal the impact of additional chlorine and cations on PCDD/F formation. Similarly, the raw meal was mixed with the kiln dust to investigate possible suppression effects of those PCDD/Fs formed through the precursor or the de novo synthesis at a temperature of 350°C. The raw meal suppressed the formation of PCDD/Fs from kiln dust. Furthermore, the raw meal could not suppress the formation of PCDD/Fs on mixtures of kiln dust and NaCl or CuCl 2 , which could be associated with a potential increase in the formation effects of PCDD/Fs on the raw meal. The results can help in potential decision-making on the applicability of certain cement kilns on the co-processing of MSW containing high levels of Cl and Cu.

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Section: Pcdd/fs Analysismentioning

confidence: 99%

Suppression of PCDD/Fs by Raw Meal in Cement Kilns

Lin

Ji²,

Zhan

et al. 2018

Aerosol Air Qual. Res.

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show abstract

“…The Nuuk incinerator is an older, small-scale incineration facility, where the technology and operating conditions are quite different from the ones in large-scale Danish incinerators. Lower temperatures and consequent unstable combustion might result in the formation of products of incomplete combustion, which might be precursors for PCDD/PCDF [21]. Electrostatic precipitators represent a low cost technology, but one which might lead to the formation of PCDD/PCDF [22], especially in old MSW incinerators without control of the flue gas treatment temperature.…”

Section: Pcdd/pcdf In Fly Ash and Apc Residuesmentioning

confidence: 99%

The influence of electrodialytic remediation on dioxin (PCDD/PCDF) levels in fly ash and air pollution control residues

2016

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“…Stack gas and residue emissions are the two main ways UP-POPs are released from industries that have major thermal processes. Heterogeneous reactions during thermal processes are the dominant UP-POP formation mechanisms [12], and fly ash is considered to be an important matrix for catalyzing these heterogeneous reactions because it contains relatively large amounts of carbon and catalytic elements [13][14][15][16]. High UP-POPs concentrations have been found in fly ash samples from various thermal industries, so fly ash is considered to be one of the most important sources of UP-POPs to the environment [17].…”

Section: Introductionmentioning

confidence: 99%