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Abstract

Impact of Sodium Ion Stress on the Mechanism of Lead Ion Migration in Electrochemical Treatment of Lead-Contaminated Soil †

by
Yinyin Zhang
*,
Jiangtao Han
and
Libin Zang
College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China
*
Author to whom correspondence should be addressed.
†
Presented at the 1st International Electronic Conference on Toxics, 20–22 March 2024; Available online: https://sciforum.net/event/IECTO2024.
Proceedings 2024, 102(1), 15; https://doi.org/10.3390/proceedings2024102015
Published: 3 April 2024
Versions Notes

Abstract

:
This study specifically validates the migration patterns of lead ions under sodium ion stress in soil and concludes that a high concentration of sodium ions, when coexisting with lead ions, diminishes the migration rate of lead ions, consequently reducing the removal efficiency of lead ions. 1. Introduction: Treatment of lead-contaminated soil has become a prominent research concern, with electrochemical treatment (ECT) technology demonstrating significant potential in this regard. ECT not only overcomes the drawbacks of traditional technology of soil remediation, such as long remediation periods, low efficiency, and high costs, but also enables in situ remediation. However, the influence of varying concentrations of non-contaminant ions on the removal efficiency of heavy metal ions during electrochemical treatment remediation of different naturally polluted soils remains unclear. Therefore, investigating the impact of sodium ion stress on the migration of lead ions is essential. 2. Methods: This study applies a DC power supply connected to an experimental device. The device is made of plexiglass and consists of three compartments: one soil compartment and two electrolytic compartments. A multimeter is installed with a wire between the DC power and the soil reaction device for monitoring the current. 3. Results: This study indicates a significant influence of the presence of sodium ions on the migration of lead ions during ECT. A high concentration of sodium ions induces ion competition in the soil, hindering the migration of lead ions and causing a decrease in their migration rate. Additionally, the competitive interaction between sodium ions and lead ions has a pronounced effect on the efficiency of ECT, leading to a reduction in the removal efficiency of lead ions. 4. Conclusion: These results emphasize the importance of considering sodium ion stress in the electrochemical remediation of lead-contaminated soil and provide valuable insights for optimizing electrochemical remediation strategies.

Supplementary Materials

The presentation material of this work is available online at https://www.mdpi.com/article/10.3390/proceedings2024102015/s1.

Author Contributions

Conceptualization, J.H. and L.Z.; methodology, L.Z.; software, L.Z.; validation, J.H., L.Z. and Y.Z.; formal analysis, Y.Z.; investigation, Y.Z.; resources, J.H.; data curation, L.Z.; writing—original draft preparation, L.Z.; writing—review and editing, L.Z.; visualization, L.Z.; supervision, J.H. and L.Z.; project administration, J.H. and L.Z.; funding acquisition, J.H. and L.Z.; All authors have read and agreed to the published version of the manuscript.

Funding

This research was funded by the National Natural Science Foundation of China (51603083).

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

The data presented in this study are available on request from the corresponding author due to reasonable request.

Conflicts of Interest

The authors declare no conflict of interest.
Disclaimer/Publisher’s Note: The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions or products referred to in the content.

Share and Cite

MDPI and ACS Style

Zhang, Y.; Han, J.; Zang, L. Impact of Sodium Ion Stress on the Mechanism of Lead Ion Migration in Electrochemical Treatment of Lead-Contaminated Soil. Proceedings 2024, 102, 15. https://doi.org/10.3390/proceedings2024102015

AMA Style

Zhang Y, Han J, Zang L. Impact of Sodium Ion Stress on the Mechanism of Lead Ion Migration in Electrochemical Treatment of Lead-Contaminated Soil. Proceedings. 2024; 102(1):15. https://doi.org/10.3390/proceedings2024102015

Chicago/Turabian Style

Zhang, Yinyin, Jiangtao Han, and Libin Zang. 2024. "Impact of Sodium Ion Stress on the Mechanism of Lead Ion Migration in Electrochemical Treatment of Lead-Contaminated Soil" Proceedings 102, no. 1: 15. https://doi.org/10.3390/proceedings2024102015

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