Enrichment of heavy metals in fine particles of municipal solid waste incinerator (MSWI) fly ash and associated health risk

Zhou, Jizhi; Wu, Simiao; Pan, Yu-Fei; Zhang, Lingen; Cao, Zhengjun; Zhang, Xiaoqiao; Yonemochi, Shinichi; Hosono, Shigeo; Wang, Yao; Oh, Kwang-Soo; Qian, Guangren

doi:10.1016/j.wasman.2015.06.026

Cited by 69 publications

(26 citation statements)

References 38 publications

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“…Meanwhile, the plastic products, kitchen waste, and other chlorine components volatilize-condense during the incineration, so that there is a higher content of Cl (18.38 wt %) in MSWI fly ash in the form of soluble chlorine salts [21]. The mineralogical components of MSWI fly ash are shown in Figure 2a, and the main mineral phases of MSWI fly ash are KCl, NaCl, CaSO 4 , CaClOH, CaCO 3 , SiO 2 , and Ca(OH) 2 , which are consistent with the results of other research studies [22,23]. It indicates that MSWI fly ash is a mixture of chloride, calcium compounds, and silicate.…”

Section: Characteristics Of Mswi Fly Ashsupporting

confidence: 90%

Heavy Metals Removing from Municipal Solid Waste Incineration Fly Ashes by Electric Field-Enhanced Washing

et al. 2020

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Municipal solid waste incineration (MSWI) fly ash contains chlorides, heavy metals, and organic pollutants, which requires appropriate disposal to eliminate this risk. In this study, the effects of agents on heavy metals removal from MSWI fly ash by electric field-enhanced washing were systematically studied. The results show that when these fly ashes were washed at a current density of 35 mA/cm 2 , polarity switching frequency of 40 Hz, Ethylenediaminetetraacetic acid (EDTA) dosage of 0.5 mol/L, and a pH of 2 for 4 h, almost all of the Cd and Ni could be were removed, with a removal efficiency of 100.00% and 99.59%, respectively. Meanwhile, it also shows a significant effect on Cu and Zn, with a removal efficiency higher than 85%. After washing, the results of the sequential extraction procedure showed that the residual forms of Pb, Cu, Zn, Cd, Ni, and As increased obviously. According to GB5085.3-2007, the toxicity of the treated MSWI fly ash were below their thresholds of 5 and 1 mg/L for Pb and Cd, respectively. Thus, a novel technology for heavy metals removal from MSWI fly ash is proposed.

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Section: Characteristics Of Mswi Fly Ashsupporting

confidence: 90%

Heavy Metals Removing from Municipal Solid Waste Incineration Fly Ashes by Electric Field-Enhanced Washing

et al. 2020

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“…Hazardous pollutants contained in urban dust can enter human bodies and endanger human health through re-suspension-inhalation, hand-mouth ingestion and dermal contact. In particular, PM with diameter below 10 micrometer (lm) (PM 10 ) and 2.5 lm (PM 2.5 ) showed inhalable risk and pulmonary infection risk, respectively (Buonanno and Morawska 2015;He et al 2008;Pancras et al 2013;Zereini et al 2005;Zheng et al 2010;Zhou et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Seasonal variations and sources study by way of back trajectories and ANOVA for ambient air pollutants (particulates and metallic elements) within a mixed area at Longjing, central Taiwan: 1-year observation

Fang

Zhuang

et al. 2016

Environ Geochem Health

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This study measured the concentrations of particulates and metallic elements in ambient air by using PS-1 sampler (TSP) at Longjing area. And this study focuses on the collection of ambient air particulates, metallic elements, particulate-bound mercury Hg(p), concentrations. In addition, the sources of ambient pollutants by way of back trajectory analysis are found. Moreover, test mean concentration variance differences for metallic elements (PM, Hg(p), Mn, Fe, Zn, Cr, Cu, and Pb) among the four seasons (spring, summer, autumn and winter) through ANOVA are calculated. The result indicates that the average highest particulate concentration occurred in winter season, and the order was winter > spring > autumn > summer, and the mostly highest average metallic element (Mn, Fe, Zn, Cr, Cu, Pb) concentrations occurred in autumn. Moreover, the mostly average lowest metallic element concentrations occurred in summer. In addition, the above results of backward trajectories that the major particulate pollutants parcel mainly come from northeastern Taiwan. Moreover, when comparing the results of the first half year to that of the second half year, the they indicated that all metallic elements displayed significant differences in concentrations except those of Hg(p), Mn, Fe, Zn. Finally, metallic element Hg(p) is the only one which showed no significant concentration difference from either seasonal variations or half-year observations.

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“…ASTM C 618 defines fly ash to be Class F if it contains at least 70 % of SiO 2 + Al 2 O 3 + Fe 2 O 3 [35] and according to this definition the fly ashes from Počerady, Mělník, Dětmarovice, and Ledvice are classified as Class F fly ashes. It can also be seen that all the fly ashes contain Si and Al in large amounts followed by Fe, Ca, K, Ti, Na, Mg, P, and Zr and various other trace elements like Bi, S, V, Cr, Mn, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, La, Ce, and Hg, as also determined by [36][37][38]. The fly ash from Počerady shows a high Si content and low Fe content compared to other fly ashes, which also indicates that Si is being replaced by Fe content in these fly ashes.…”

Section: Chemical Properties Using Edx Total Area and Xrf Analysesmentioning

confidence: 67%

Determining the Role of Individual Fly Ash Particles in Influencing the Variation in the Overall Physical, Morphological, and Chemical Properties of Fly Ash

et al. 2016

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Abstract. The properties of fly ashes vary because of the differences in the properties of their individual particles, and the determination of variation in these properties is of interest to the industries which use pulverized raw fly ash in applications, such as in cementitious materials and in the recovery of certain rare elements from raw fly ash. To investigate the differences in individual particles, four pulverized raw fly ashes from thermal power plants of the Czech Republic were used in this research. It was observed from FE-SEM that all four fly ashes consist of glassy hollow spherical, solid spherical, porous spherical, bright spherical, porous slaggy and compact slaggy particles. Box and whisker diagrams were plotted from the data of EDX individual particle analyses, which showed that the data of percentages for the Si, Al, and Fe elements is more scattered as compared to other elements. It was further observed from ternary phase diagrams and pseudo coloured images, that nature of fly ash particles changes from alumino silicate glassy to alumino silicate calcite metallic to pure ferro-metallic, where glassy particles showed high percentages and pure calcite particles were absent in fly ashes. Furthermore, a comparison between the XRF, the EDX total area analyses, showed that the EDX individual particle analysis gives more realistic and reliable data with median, mean, and the standard deviation for percentages of each element present in the fly ashes.

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Enrichment of heavy metals in fine particles of municipal solid waste incinerator (MSWI) fly ash and associated health risk

Cited by 69 publications

References 38 publications

Heavy Metals Removing from Municipal Solid Waste Incineration Fly Ashes by Electric Field-Enhanced Washing

Heavy Metals Removing from Municipal Solid Waste Incineration Fly Ashes by Electric Field-Enhanced Washing

Seasonal variations and sources study by way of back trajectories and ANOVA for ambient air pollutants (particulates and metallic elements) within a mixed area at Longjing, central Taiwan: 1-year observation

Determining the Role of Individual Fly Ash Particles in Influencing the Variation in the Overall Physical, Morphological, and Chemical Properties of Fly Ash

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