Mobility of heavy metals and rare earth elements in incineration bottom ash through particle size reduction

Qiongji Yao; Nadira Bte Samad; Benedikt Keller; Xiangshan Sheryl Seah; Ling Huang; Raymond Lau

doi:10.1016/j.ces.2014.07.013

Mobility of heavy metals and rare earth elements in incineration bottom ash through particle size reduction

Qiongji Yao, Nadira Bte Samad, Benedikt Keller, Xiangshan Sheryl Seah, Ling Huang, Raymond Lau^*

^*Corresponding author for this work

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

39 Citations (Scopus)

Abstract

Incineration is an important municipal solid waste management process in Singapore. The incineration bottom ash (IBA) generated may contain heavy metals (HMs) and rare earth elements (REEs) that can cause environmental concerns upon reutilization. In this study, the particle size distribution, density, circularity, and chemical composition of the overall IBA as well as individual size ranges were determined. The particle size reduction characteristics and the mobility of HMs and REEs among different size ranges through ball milling and fluidization processes were examined. Certain HMs were found to present in high concentrations at particular particle size ranges. Mechanisms concerning the mobility of HMs and REEs were revealed.

Original language	English
Pages (from-to)	214-220
Number of pages	7
Journal	Chemical Engineering Science
Volume	118
DOIs	https://doi.org/10.1016/j.ces.2014.07.013
Publication status	Published - Oct 18 2014
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Keywords

Ball milling
Fluidization
Heavy metals
Incineration bottom ash
Particle size reduction
Rare earth elements

UN SDGs

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

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10.1016/j.ces.2014.07.013

Cite this

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title = "Mobility of heavy metals and rare earth elements in incineration bottom ash through particle size reduction",

abstract = "Incineration is an important municipal solid waste management process in Singapore. The incineration bottom ash (IBA) generated may contain heavy metals (HMs) and rare earth elements (REEs) that can cause environmental concerns upon reutilization. In this study, the particle size distribution, density, circularity, and chemical composition of the overall IBA as well as individual size ranges were determined. The particle size reduction characteristics and the mobility of HMs and REEs among different size ranges through ball milling and fluidization processes were examined. Certain HMs were found to present in high concentrations at particular particle size ranges. Mechanisms concerning the mobility of HMs and REEs were revealed.",

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doi = "10.1016/j.ces.2014.07.013",

language = "English",

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journal = "Chemical Engineering Science",

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AU - Yao, Qiongji

AU - Samad, Nadira Bte

AU - Keller, Benedikt

AU - Seah, Xiangshan Sheryl

AU - Huang, Ling

AU - Lau, Raymond

PY - 2014/10/18

Y1 - 2014/10/18

N2 - Incineration is an important municipal solid waste management process in Singapore. The incineration bottom ash (IBA) generated may contain heavy metals (HMs) and rare earth elements (REEs) that can cause environmental concerns upon reutilization. In this study, the particle size distribution, density, circularity, and chemical composition of the overall IBA as well as individual size ranges were determined. The particle size reduction characteristics and the mobility of HMs and REEs among different size ranges through ball milling and fluidization processes were examined. Certain HMs were found to present in high concentrations at particular particle size ranges. Mechanisms concerning the mobility of HMs and REEs were revealed.

AB - Incineration is an important municipal solid waste management process in Singapore. The incineration bottom ash (IBA) generated may contain heavy metals (HMs) and rare earth elements (REEs) that can cause environmental concerns upon reutilization. In this study, the particle size distribution, density, circularity, and chemical composition of the overall IBA as well as individual size ranges were determined. The particle size reduction characteristics and the mobility of HMs and REEs among different size ranges through ball milling and fluidization processes were examined. Certain HMs were found to present in high concentrations at particular particle size ranges. Mechanisms concerning the mobility of HMs and REEs were revealed.

KW - Ball milling

KW - Fluidization

KW - Heavy metals

KW - Incineration bottom ash

KW - Particle size reduction

KW - Rare earth elements

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Mobility of heavy metals and rare earth elements in incineration bottom ash through particle size reduction

Abstract

ASJC Scopus Subject Areas

Keywords

UN SDGs

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