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

doi:10.1016/j.jhazmat.2009.04.076

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

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

61 Citations (Scopus)

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.

Original language	English
Pages (from-to)	443-448
Number of pages	6
Journal	Journal of Hazardous Materials
Volume	170
Issue number	1
DOIs	https://doi.org/10.1016/j.jhazmat.2009.04.076
Publication status	Published - 2009 Oct 15

All Science Journal Classification (ASJC) codes

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

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10.1016/j.jhazmat.2009.04.076

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

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\}",

note = "Funding Information: The authors gratefully acknowledge the National Science Council, Taiwan for its financial support for this study (Contract No: NSC 96-2221-E-006-032-MY3).",

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doi = "10.1016/j.jhazmat.2009.04.076",

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AU - Chen, Ying Liang

AU - Shih, Pai Haung

AU - Chiang, Li Choung

AU - Chang, Yi Kuo

AU - Lu, Hsing Cheng

AU - Chang, Juu En

N1 - Funding Information: The authors gratefully acknowledge the National Science Council, Taiwan for its financial support for this study (Contract No: NSC 96-2221-E-006-032-MY3).

PY - 2009/10/15

Y1 - 2009/10/15

N2 - 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.

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

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