Accelerated carbonation of municipal solid waste incineration fly ash

Lei Wang; Yi Ying Jin; Yong Feng Nie

Accelerated carbonation of municipal solid waste incineration fly ash

Lei Wang, Yi Ying Jin, Yong Feng Nie

Tsinghua University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Because of the high Ca and amphoteric heavy metals content of the municipal solid waste incineration (MSWI) fly ash, accelerated carbonation at high liquid to solid ratio of 10:1 was investigated to improve its physical and chemistry properties. Carbonation and heavy metals (Pb, Cu, Zn, Cd, Ni, Cr) mobility were studied by applying mineral analysis, morphology analysis, porosity analysis and leaching assays. XRD analysis showed the disappearance of the CaClOH peak and the appearance of CaCO₃ in the accelerated carbonated fly ash were showed. Treatment through carbonation reduced the pH of the fly ash from 12.4 to 7, and reduced the leaching concentration of Pb Cu, Zn and Ni by 99.7%, 93.9%, 90.6% and 27.8%, respectively. However, the leaching concentration of Cr increased 29.7%.

Original language	English
Pages (from-to)	1111-1116
Number of pages	6
Journal	Zhongguo Huanjing Kexue/China Environmental Science
Volume	29
Issue number	10
State	Published - Oct 2009
Externally published	Yes

Keywords

Accelerated carbonation
Heavy metal;leaching toxicity
Municipal solid waste incineration (MSWI) fly ash
Porosity

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

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title = "Accelerated carbonation of municipal solid waste incineration fly ash",

abstract = "Because of the high Ca and amphoteric heavy metals content of the municipal solid waste incineration (MSWI) fly ash, accelerated carbonation at high liquid to solid ratio of 10:1 was investigated to improve its physical and chemistry properties. Carbonation and heavy metals (Pb, Cu, Zn, Cd, Ni, Cr) mobility were studied by applying mineral analysis, morphology analysis, porosity analysis and leaching assays. XRD analysis showed the disappearance of the CaClOH peak and the appearance of CaCO3 in the accelerated carbonated fly ash were showed. Treatment through carbonation reduced the pH of the fly ash from 12.4 to 7, and reduced the leaching concentration of Pb Cu, Zn and Ni by 99.7%, 93.9%, 90.6% and 27.8%, respectively. However, the leaching concentration of Cr increased 29.7%.",

keywords = "Accelerated carbonation, Heavy metal;leaching toxicity, Municipal solid waste incineration (MSWI) fly ash, Porosity",

author = "Lei Wang and Jin, {Yi Ying} and Nie, {Yong Feng}",

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TY - JOUR

T1 - Accelerated carbonation of municipal solid waste incineration fly ash

AU - Wang, Lei

AU - Jin, Yi Ying

AU - Nie, Yong Feng

PY - 2009/10

Y1 - 2009/10

N2 - Because of the high Ca and amphoteric heavy metals content of the municipal solid waste incineration (MSWI) fly ash, accelerated carbonation at high liquid to solid ratio of 10:1 was investigated to improve its physical and chemistry properties. Carbonation and heavy metals (Pb, Cu, Zn, Cd, Ni, Cr) mobility were studied by applying mineral analysis, morphology analysis, porosity analysis and leaching assays. XRD analysis showed the disappearance of the CaClOH peak and the appearance of CaCO3 in the accelerated carbonated fly ash were showed. Treatment through carbonation reduced the pH of the fly ash from 12.4 to 7, and reduced the leaching concentration of Pb Cu, Zn and Ni by 99.7%, 93.9%, 90.6% and 27.8%, respectively. However, the leaching concentration of Cr increased 29.7%.

AB - Because of the high Ca and amphoteric heavy metals content of the municipal solid waste incineration (MSWI) fly ash, accelerated carbonation at high liquid to solid ratio of 10:1 was investigated to improve its physical and chemistry properties. Carbonation and heavy metals (Pb, Cu, Zn, Cd, Ni, Cr) mobility were studied by applying mineral analysis, morphology analysis, porosity analysis and leaching assays. XRD analysis showed the disappearance of the CaClOH peak and the appearance of CaCO3 in the accelerated carbonated fly ash were showed. Treatment through carbonation reduced the pH of the fly ash from 12.4 to 7, and reduced the leaching concentration of Pb Cu, Zn and Ni by 99.7%, 93.9%, 90.6% and 27.8%, respectively. However, the leaching concentration of Cr increased 29.7%.

KW - Accelerated carbonation

KW - Heavy metal;leaching toxicity

KW - Municipal solid waste incineration (MSWI) fly ash

KW - Porosity

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M3 - 文章

AN - SCOPUS:70749094100

SN - 1000-6923

VL - 29

SP - 1111

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JO - Zhongguo Huanjing Kexue/China Environmental Science

JF - Zhongguo Huanjing Kexue/China Environmental Science

IS - 10

ER -

Accelerated carbonation of municipal solid waste incineration fly ash

Abstract

Keywords

UN SDGs

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