Antimony ore tailings: heavy metals, chemical speciation, and leaching characteristics

Yingying Zhou, Bozhi Ren, Andrew S. Hursthouse, Saijun Zhou

Research output: Contribution to journalArticle

Abstract

Antimony ore tailings slag was used analyze heavy metals, chemical speciation, and leaching characteristics. The results show that the residual silicate phases account for 65.44% of Sb, 77.22% of As, 87.94% of Hg, 58.53% of Pb, 71.27% of Cd, and 96.34% of Zn. Although the exchangeable and carbonate phases account for 7.71% of Sb, 0.71% of As, 3.77% of Hg, 4.82% of Pb, 1.83% of Cd, and 1.73% of Zn, the water-or-acid-soluble phases contribute more to the chemical speciation of heavy metals. Concentrations of Sb, As, and Hg in the leachates increased with increasing solid-liquid ratio, decreasing particle size and increasing temperature. In simulated rainfall conditions, the total quantity increased in the order Sb > As > Hg and were 42.508 mg, 52.940 μg, and 0.876 μg, respectively, at 500 g antimony ore tailings. Under different rainfall intensity simulations, the maximum quantity in the leachates of Sb, As, and Hg were 93.894 mg, 255.451 μg, and 1.690 μg, respectively, and increased in the order of moderate > heavy > rainstorm. Finally, the cumulative leaching of Sb at pH 6.0 is 42.025 mg/L (higher than at 4.0 and 5.0), and the As and Hg at pH 4.0 are 107.097 μg/L and 0.989 μg/L, respectively.
Original languageEnglish
Pages (from-to)485-495
Number of pages11
JournalPolish Journal of Environmental Studies
Volume28
Issue number1
Early online date1 Aug 2018
DOIs
Publication statusPublished - 2019

Fingerprint

Ore tailings
Chemical speciation
Antimony
speciation (chemistry)
antimony
Heavy Metals
tailings
Leaching
Heavy metals
Rain
leachate
leaching
heavy metal
Silicates
rainstorm
slag
precipitation intensity
Slags
silicate
rainfall

Keywords

  • antimony ore
  • heavy metals
  • speciation
  • leaching

Cite this

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title = "Antimony ore tailings: heavy metals, chemical speciation, and leaching characteristics",
abstract = "Antimony ore tailings slag was used analyze heavy metals, chemical speciation, and leaching characteristics. The results show that the residual silicate phases account for 65.44{\%} of Sb, 77.22{\%} of As, 87.94{\%} of Hg, 58.53{\%} of Pb, 71.27{\%} of Cd, and 96.34{\%} of Zn. Although the exchangeable and carbonate phases account for 7.71{\%} of Sb, 0.71{\%} of As, 3.77{\%} of Hg, 4.82{\%} of Pb, 1.83{\%} of Cd, and 1.73{\%} of Zn, the water-or-acid-soluble phases contribute more to the chemical speciation of heavy metals. Concentrations of Sb, As, and Hg in the leachates increased with increasing solid-liquid ratio, decreasing particle size and increasing temperature. In simulated rainfall conditions, the total quantity increased in the order Sb > As > Hg and were 42.508 mg, 52.940 μg, and 0.876 μg, respectively, at 500 g antimony ore tailings. Under different rainfall intensity simulations, the maximum quantity in the leachates of Sb, As, and Hg were 93.894 mg, 255.451 μg, and 1.690 μg, respectively, and increased in the order of moderate > heavy > rainstorm. Finally, the cumulative leaching of Sb at pH 6.0 is 42.025 mg/L (higher than at 4.0 and 5.0), and the As and Hg at pH 4.0 are 107.097 μg/L and 0.989 μg/L, respectively.",
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Antimony ore tailings : heavy metals, chemical speciation, and leaching characteristics. / Zhou, Yingying; Ren, Bozhi; Hursthouse, Andrew S.; Zhou, Saijun.

In: Polish Journal of Environmental Studies, Vol. 28, No. 1, 2019, p. 485-495.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Antimony ore tailings

T2 - heavy metals, chemical speciation, and leaching characteristics

AU - Zhou, Yingying

AU - Ren, Bozhi

AU - Hursthouse, Andrew S.

AU - Zhou, Saijun

PY - 2019

Y1 - 2019

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KW - antimony ore

KW - heavy metals

KW - speciation

KW - leaching

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JO - Polish Journal of Environmental Studies

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