Skip to main content

Advertisement

Log in

Removal of high concentration of chloride ions by electrocoagulation using aluminium electrode

  • Research Article
  • Published:
Environmental Science and Pollution Research Aims and scope Submit manuscript

Abstract

Wastewater containing a high concentration of chloride ions (Cl ions) generated in industrial production will corrode equipment and pipelines and cause environmental problems. At present, systematic research on Cl removal by electrocoagulation is scarce. To study the Cl removal mechanism, process parameters (current density and plate spacing), and the influence of coexisting ions on the removal of Cl in electrocoagulation, we use aluminum (Al) as the sacrificial anode, combined with physical characterization and density functional theory (DFT) to study Cl removal by electrocoagulation. The result showed that the use of electrocoagulation technology to remove Cl can reduce the concentration of Cl in an aqueous solution below 250 ppm, meeting the Cl emission standard. The mechanism of Cl removal is mainly co-precipitation and electrostatic adsorption by forming chlorine-containing metal hydroxyl complexes. The current density and plate spacing affect the Cl removal effect and operation cost. As a coexisting cation, magnesium ion (Mg2+) promotes the removal of Cl, while calcium ion (Ca2+) inhibits it. Fluoride ion (F), sulfate (SO42−), and nitrate (NO3) as coexisting anions affect the removal of Cl ions through competitive reaction. This work provides a theoretical basis for the industrialization of Cl removal by electrocoagulation.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

Data availability

The datasets supporting the conclusions of this article can be obtained from the corresponding author upon reasonable request.

References

Download references

Funding

This work is supported by the Natural Science Foundation of Shanxi (201901D111084).

Author information

Authors and Affiliations

Authors

Contributions

Zirui Wang: investigation, writing – original draft. Xiaowei An: investigation, writing – review and editing. Peifen Wang: investigation. Xiao Du: investigation. Xiaogang Hao: conceptualization, methodology. Xiaoqiong Hao: investigation. Xuli Ma: conceptualization, methodology, funding acquisition.

Corresponding author

Correspondence to Xuli Ma.

Ethics declarations

Ethical approval and consent to participation

Not applicable.

Consent for publication

Not applicable.

Competing interests

The authors declare no competing interests.

Additional information

Responsible Editor: Weiming Zhang

Publisher's note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 3612 KB)

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wang, Z., An, X., Wang, P. et al. Removal of high concentration of chloride ions by electrocoagulation using aluminium electrode. Environ Sci Pollut Res 30, 50567–50581 (2023). https://doi.org/10.1007/s11356-023-25792-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11356-023-25792-1

Keywords

Navigation