The influence of heavy metals on partitioning of PAHs during incineration

Wey, Ming‐Yen; Chao, Chia-Yung; Wei, Ming-Chi; Yu, Lih-Jyh; Liu, Zhen-Shu

doi:10.1016/s0304-3894(00)00254-5

Cited by 31 publications

(16 citation statements)

References 14 publications

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“…The soil moisture content was varied from 1 to 25 %. During the tests, fly ash and gaseous samples were sampled according to the U.S. EPA method 5 (Wey et al 2000) and U.S. EPA modified method 5 (Wey et al 2006), respectively. Four samples of fly ash and three samples of BTEX and PAHs collections were analyzed under the isokinetic condition.…”

Section: Methodsmentioning

confidence: 99%

Effect of co-contaminated soil mixtures as fixed/fluidized bed media on pollutants emission under thermal treatment

Samaksaman

Kuo

Peng

et al. 2015

Int. J. Environ. Sci. Technol.

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Thermal treatment of soil polluted by lube oil and heavy metals (cadmium, chromium, copper, and lead) was carried out by using a laboratory-scale incinerator. The effect of co-contaminated soil mixtures as fixed/fluidized bed media was studied with different ratios of sand bed amount to soil feeding. Additionally, the effect of soil moisture content on incineration system was further investigated. The reduction in air input altered the mode of fluidized bed to fixed bed which resulted in an increase in organic pollutants such as benzene, toluene, ethylbenzene, xylene, and polycyclic aromatic hydrocarbons. The combustion efficiency of fixed bed mode was observed to be relatively high at a lower ratio of sand bed amount to soil feeding, whereas high combustion efficiency was found in fluidized bed mode at a higher ratio of sand bed amount to soil feeding. Much higher concentration of organic pollutants in both gas phase and bottom ash is found under a higher soil moisture content. In addition, the increase in moisture content has resulted in an increase in lead, cadmium, and chromium in fly ash while copper was decreased. An important consideration is that the partitioning of heavy metals was randomly distributed in particle sizes of bottom ash. The highest concentration of heavy metals was deposited on fine-sized particle. The distribution of heavy metals in medium-sized and coarse-sized particles to form eutectic species might be produced by the soil-sand aggregation.

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Section: Methodsmentioning

confidence: 99%

Effect of co-contaminated soil mixtures as fixed/fluidized bed media on pollutants emission under thermal treatment

Samaksaman

Kuo

Peng

et al. 2015

Int. J. Environ. Sci. Technol.

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“…Further LMW-PAHs with higher vapor pressures may also be redistributed easily among the particles [23]. It is also likely that the higher content of un-burnt carbon in bottom ash (2.04%) than fly ash (0.69%) (Table 1a) increased the adsorptive area for LMW-PAHs, whereas the relatively higher content of Cd, Cr, Pb, and Zn (range, 1.4-53 mg/l)) in the fly ash than bottom ash (0.69-13.0 mg/l) prompted LMW-PAHs to produce HMW-PAHs [108].…”

Section: Pahs In Coal Fly Ash and Bottom Ashmentioning

confidence: 99%

Investigations on PAHs and trace elements in coal and its combustion residues from a power plant

Verma

Masto

Gautam

et al. 2015

Fuel

120

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“…Moreover, the presence of heavy metals such as Zn, Cr, Cd, Pb in feed waste has been found to increase the formation of PAHs in solid residues from waste combustion (Wey et al 1996(Wey et al , 2000. Furthermore, it was reported that metallic chlorides CuCl, CuCl 2 (Hatanaka et al 2004;Wang et al 2002), FeCl 3 (Olie et al 1998;Kuzuhara et al 2003) might affect the formation and transformation of PAHs and PCDD/Fs during combustion.…”

Section: Factors Affecting Pahs In Residues From Msw Incinerationmentioning

confidence: 99%

Effect of MSW Source-Classified Collection on Polycyclic Aromatic Hydrocarbons in Residues from Full-Scale Incineration in China

Shi

Tang

et al. 2008

Water Air Soil Pollut

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Municipal solid waste (MSW) sourceclassified collection represents an advancement in resource recycling and secondary pollution control in China. Comparative experiments were performed to assess the effect of a newly-established MSW source-classified collection system on polycyclic aromatic hydrocarbons (PAHs) in bottom ash from an incinerator (BA), fly ash from a boiler (FAB) and fly ash from a bag filter (FABF) of a full-scale MSW incinerator in China. Compared with FAB or FABF, PAHs were mainly concentrated in BA with a range of 1,961.0-2,420.2 μg/kg. Total amounts of 16 high priority PAHs in BA, FAB and FABF from the classified MSW incineration were significantly reduced by 19.0%, 42.4% and 59.8% respectively in comparison with those from the traditional mixed MSW incineration. Moreover, the toxic equivalent quantity (B[a]P eq ) of carcinogenic PAHs in these three kinds of residues from the classified MSW incineration were significantly decreased, with the maximum decrease observed in FABF. As a result of source-classification with effective presorting and dewatering, plastics and metals in the MSW were lower, but combustibles and heat values of the MSW increased. Due to variations of the characteristics of the feed waste, complete combustion conditions including continuous higher incineration temperature, lower CO concentration and higher air excess ratio were observed during the process of classified MSW incineration. Incineration temperature and CO concentration showed a negative and positive correlation, respectively, with total PAHs, indicating that incomplete combustion products such as PAHs could be reduced by controlling combustion conditions directly related to properties of the feed waste. The newly established MSW source-classified collection process could be a feasible method for reducing PAHs formation and emission in residues from MSW incineration.

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The influence of heavy metals on partitioning of PAHs during incineration

Cited by 31 publications

References 14 publications

Effect of co-contaminated soil mixtures as fixed/fluidized bed media on pollutants emission under thermal treatment

Effect of co-contaminated soil mixtures as fixed/fluidized bed media on pollutants emission under thermal treatment

Investigations on PAHs and trace elements in coal and its combustion residues from a power plant

Effect of MSW Source-Classified Collection on Polycyclic Aromatic Hydrocarbons in Residues from Full-Scale Incineration in China

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