Content, mobility and transfer behavior of heavy metals in MSWI bottom ash in Zhejiang province, China

Yao, Jun; Wen-bing, LI; Kong, Qingna; Wu, Yu-Yong; He, Ruo; Shen, Dongsheng

doi:10.1016/j.fuel.2009.06.016

Cited by 102 publications

(56 citation statements)

References 31 publications

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“…It is also known that the properties of the MSWI bottom ashes from different plants and countries vary due to the source of solid waste and incineration process [32,33]. Moreover, the environmental legislation, management and application of the MSWI bottom ashes differ from country to country in consideration of the local situation [34,35].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and application potential of municipal solid waste incineration (MSWI) bottom ashes from two waste-to-energy plants

Tang

Florea

Spiesz

et al. 2015

Construction and Building Materials

183

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Section: Introductionmentioning

confidence: 99%

Characteristics and application potential of municipal solid waste incineration (MSWI) bottom ashes from two waste-to-energy plants

Tang

Florea

Spiesz

et al. 2015

Construction and Building Materials

183

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“…Till 2006, there were 17 MSW incinerators in six cities with the treatment capacity of 10,150 t/d, accounting for 24.6% in amount and 25.4% in treatment capacity of China [3,19]. Nowadays, about 30% of MSW in Zhejiang are treated by incineration resulting in a large volume of bottom ash, which accounted for about 30% of those generated in the whole country [3,19]. The environmental impact of MSW incineration has received a lot of attention.…”

Section: Introductionmentioning

confidence: 99%

Levels and patterns of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in municipal waste incinerator bottom ash in Zhejiang province, China

Shen

Tang

Yao

et al. 2010

Journal of Hazardous Materials

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“…The trace element content in bottom ashes ranged from 6-104 mg/kg dw As, 0.5-321 mg/kg dw Sb, 12-2750 mg/kg dw Pb, 395-14 800 mg/kg dw Zn, 36-17 300 mg/kg dw Cu, 43-806 mg/kg dw Cr and 9-280 mg/ kg dw Ni. High variation in concentrations among facilities might be attributed to the variety of input waste fuels treated (occurrence and distribution of trace elements, chlorine content), volatilization potential of trace elements and different furnace operation parameters during incineration (temperature, air/fuel ratio, mixing conditions) [29]. In this study, generally, on average, the content of major trace elements (Zn, Cu and Pb) in household/ industrial or mixed waste bottom ashes were of high level in comparison to in wooden/mixed wooden fuel or waste ashes.…”

Section: Trace Element Contents and Composition Of Bottom Ashesmentioning

confidence: 99%

“…As shown in Table 5, Cr showed the highest proportion of R fraction with a median of 89% that also shows dominance of residual fraction. Trace elements in R fraction has previously been reported to be strongly associated with the silicate and aluminate matrix and were very difficult to leach out [29]. …”

Section: Chromiummentioning

confidence: 99%

Chemical association and mobility of trace elements in 13 different fuel incineration bottom ashes

Saqib

Bäckström

2016

Fuel

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h i g h l i g h t sBottom ashes from 13 Swedish waste incineration facilities were collected. Trace elements contents followed the sequence as Cu > Zn > Pb > Cr > Ni > Sb > As. Standard leaching indicates Cr had strongest mobility followed by Pb, Sb and Cu. Large amount of Cu is found in organic bound phase in 31% of samples. Amounts of unstable trace elements in biofuel bottom ashes are comparatively lower. a b s t r a c tThe release of trace elements from waste incineration bottom ash is problematic during utilization/ landfilling. Thirteen bottom ashes (from various waste fuels and wooden/mixed wooden fuel) were investigated with respect to the total content, leaching behaviour by standard leaching procedure (EN 12457-3), and chemical association of trace elements by sequential extraction. Results showed that the content of trace elements in household/or industrial waste bottom ashes were of high level in comparison to in wooden/mixed wooden fuel/mixed wooden waste ashes. Type of fuel being treated greatly impacts the total inventory of trace elements. On average, trace element content in 13 ashes followed the decreasing order; Cu > Zn > Pb > Cr > Ni > Sb > As. In this study the average total content of Zn, Pb, Cu and Cr was higher in grate bottom ash treating household/industrial waste in comparison to fluidized boilers ash using same waste, however, there were too few data points and variation in data was large. By Standard leaching procedure, an excessive amount (more than disposal limit) of leached Cr, Pb, Sb and Cu (mostly in household/industrial waste ash) was observed in 6, 5, 5 and 4 of the 13 samples, respectively. Correlation coefficients (r) found between total and water leachable contents for Cu, Sb and As were 0.8, 0.7 and 0.6 respectively. Sequential extraction indicated that residual was the major fraction mostly, however, considerable amounts of trace elements had the potential to leach out. A large fraction of arsenic (57% based on average values) in 5 samples (mostly in waste/virgin wood and mixed wooden waste/fuel) and Zn (49% based on average values) in 4 of 13 samples (mostly household/or industrial) were found in the fractions that are easily available (acid soluble and exchangeable). Further, a considerable amount of Cu in 4 samples were found associated with the organic-bound phase. Dissolved organic matter might play an important role in leaching of Cu during utilization/landfilling. Moreover, principal component analysis (PCA) showed that fuel type affects the association of trace elements in bottom ash. Amounts of labile trace elements in wooden/mixed wooden fuel/waste bottom ashes were comparatively lower than other fuel bottom ashes. None of the samples exceeded the limit of disposal with respect to DOC leaching while chlorine in two and sulphate in three samples (household/industrial) exceeded limit. LOI (550°C) values were higher for bottom ash from grate facilities probably due to no-pre-treatment of the waste fuel. While comparatively low values of LOI (1 000°C) in few samples ...

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Content, mobility and transfer behavior of heavy metals in MSWI bottom ash in Zhejiang province, China

Cited by 102 publications

References 31 publications

Characteristics and application potential of municipal solid waste incineration (MSWI) bottom ashes from two waste-to-energy plants

Characteristics and application potential of municipal solid waste incineration (MSWI) bottom ashes from two waste-to-energy plants

Levels and patterns of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in municipal waste incinerator bottom ash in Zhejiang province, China

Chemical association and mobility of trace elements in 13 different fuel incineration bottom ashes

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