The influence of heavy metals on the polymorphs of dicalcium silicate in the belite-rich clinkers produced from electroplating sludge

Ying Liang Chen, Pai Haung Shih, Li Choung Chiang, Yi Kuo Chang, Hsing Cheng Lu, Juu En Chang

研究成果: Article

36 引文 (Scopus)

摘要

The purpose of this study is to utilize an electroplating sludge for belite-rich clinker production and to observe the influence of heavy metals on the polymorphs of dicalcium silicate (C2S). Belite-rich clinkers prepared with 0.5-2% of NiO, ZnO, CuO, and Cr2O3 were used to investigate the individual effects of the heavy metals in question. The Reference Intensity Ratio (RIR) method was employed to determine the weight fractions of γ-C2S and β-C2S in the clinkers, and their microstructures were examined by the transmission electron microscopy (TEM). The results showed that nickel, zinc, and chromium have positive effects on β-C2S stabilization (Cr3+ > Ni2+ > Zn2+), whereas copper has a negative effect. The addition of up to 10% electroplating sludge did not have any negative influence on the formation of C2S. It was observed that γ-C2S decreased while β-C2S increased with a rise in the addition of the electroplating sludge. Moreover, nickel and chromium mainly contributed to stabilizing β-C2S in the belite-rich clinkers produced from the electroplating sludge.

原文English
頁(從 - 到)443-448
頁數6
期刊Journal of Hazardous Materials
170
發行號1
DOIs
出版狀態Published - 2009 十月 15

指紋

Electroplating
Heavy Metals
Sewage
Polymorphism
Heavy metals
Silicates
silicate
sludge
heavy metal
Chromium
Nickel
chromium
nickel
Transmission Electron Microscopy
Zinc
transmission electron microscopy
Copper
microstructure
stabilization
Stabilization

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

引用此文

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abstract = "The purpose of this study is to utilize an electroplating sludge for belite-rich clinker production and to observe the influence of heavy metals on the polymorphs of dicalcium silicate (C2S). Belite-rich clinkers prepared with 0.5-2{\%} of NiO, ZnO, CuO, and Cr2O3 were used to investigate the individual effects of the heavy metals in question. The Reference Intensity Ratio (RIR) method was employed to determine the weight fractions of γ-C2S and β-C2S in the clinkers, and their microstructures were examined by the transmission electron microscopy (TEM). The results showed that nickel, zinc, and chromium have positive effects on β-C2S stabilization (Cr3+ > Ni2+ > Zn2+), whereas copper has a negative effect. The addition of up to 10{\%} electroplating sludge did not have any negative influence on the formation of C2S. It was observed that γ-C2S decreased while β-C2S increased with a rise in the addition of the electroplating sludge. Moreover, nickel and chromium mainly contributed to stabilizing β-C2S in the belite-rich clinkers produced from the electroplating sludge.",
author = "Chen, {Ying Liang} and Shih, {Pai Haung} and Chiang, {Li Choung} and Chang, {Yi Kuo} and Lu, {Hsing Cheng} and Chang, {Juu En}",
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T1 - The influence of heavy metals on the polymorphs of dicalcium silicate in the belite-rich clinkers produced from electroplating sludge

AU - Chen, Ying Liang

AU - Shih, Pai Haung

AU - Chiang, Li Choung

AU - Chang, Yi Kuo

AU - Lu, Hsing Cheng

AU - Chang, Juu En

PY - 2009/10/15

Y1 - 2009/10/15

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AB - The purpose of this study is to utilize an electroplating sludge for belite-rich clinker production and to observe the influence of heavy metals on the polymorphs of dicalcium silicate (C2S). Belite-rich clinkers prepared with 0.5-2% of NiO, ZnO, CuO, and Cr2O3 were used to investigate the individual effects of the heavy metals in question. The Reference Intensity Ratio (RIR) method was employed to determine the weight fractions of γ-C2S and β-C2S in the clinkers, and their microstructures were examined by the transmission electron microscopy (TEM). The results showed that nickel, zinc, and chromium have positive effects on β-C2S stabilization (Cr3+ > Ni2+ > Zn2+), whereas copper has a negative effect. The addition of up to 10% electroplating sludge did not have any negative influence on the formation of C2S. It was observed that γ-C2S decreased while β-C2S increased with a rise in the addition of the electroplating sludge. Moreover, nickel and chromium mainly contributed to stabilizing β-C2S in the belite-rich clinkers produced from the electroplating sludge.

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