Remediation of Pb-polluted Soils around a Smelter in Henan Province by Oscillating Washing with Citric Acid

Yehao HUANG; Jingmin SUN; Jing XU; Jinhui DOU; Zhiwei LI; Xuluo FANG

doi:10.13779/j.cnki.issn1001-0076.2020.04.005

2020 Vol. 40, No. 4

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Yehao HUANG, Jingmin SUN, Jing XU, Jinhui DOU, Zhiwei LI, Xuluo FANG. Remediation of Pb-polluted Soils around a Smelter in Henan Province by Oscillating Washing with Citric Acid[J]. Conservation and Utilization of Mineral Resources, 2020, 40(4): 35-39. doi: 10.13779/j.cnki.issn1001-0076.2020.04.005

Citation:

Yehao HUANG, Jingmin SUN, Jing XU, Jinhui DOU, Zhiwei LI, Xuluo FANG. Remediation of Pb-polluted Soils around a Smelter in Henan Province by Oscillating Washing with Citric Acid[J]. Conservation and Utilization of Mineral Resources, 2020, 40(4): 35-39. doi: 10.13779/j.cnki.issn1001-0076.2020.04.005

Remediation of Pb-polluted Soils around a Smelter in Henan Province by Oscillating Washing with Citric Acid

1.
Henan Province Rock&Minerals Testing Center, Zhengzhou 450012, Henan, China
2.
Mineral Processing and Bioengineering Technology Research Center of Henan Province, Zhengzhou 450012, Henan, China

Received Date: 25 March 2020

Abstract

Abstract

In this work, intermittent oscillating washing tests were conducted to remediate Pb-contaminated soils, which was collected from around a metallurgical industry in Henan province. The concentration of CA, liquid-solid ratio, leaching time and temperature were chosen to research the optimal conditions. The results indicated that the Pb removal rate was 72.73% with CA concentration of 0.4 mol/L, L/S=10:1, washing temperature of 25 ℃, washing time of 24 h. The results of physical and chemical properties analysis before and after soil remediation showed that the mineral composition of soil was basically unchanged, but the size composition of soil was slightly finer, and some nutrients in the soil were lost. This study provides reference for large-scale remediation of contaminated soils in the future.
- Pb polluted soil /
- citric acid /
- intermittent oscillating washing /
- soil remedy /
- metallurgical industry

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References

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