Skip to main content

Advertisement

Log in

Carbonate and bicarbonate ions impacts on the reactivity of ferrate(VI) for 3,4-dichlorophenol removal

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

Abstract

Carbonate and bicarbonate ions are common constituents found in wastewater and natural water matrices, and their impacts on the reactivity of ferrate(VI) (Fe(VI)) with 3,4-dichlorophenol (3,4-DCP) were investigated by determining second-order rate constants of 3,4-DCP removal by Fe(VI) in the presence of CO32− and/or HCO3. The second-order rate constants decreased from 41.75 to 7.04 M−1 s−1 with an increase of [CO32−] from 0 to 2.0 mM, indicating that CO32− exhibits an inhibitory effect on 3,4-DCP removal kinetics, and experiments on pH effect, radical quenching, and Fe(VI) stability were conducted to explore possible reasons for its effect. Under identical pH conditions, the rate constant in NaOH medium was always higher than in Na2CO3 medium, suggesting that the inhibitory effect partially comes from an increase in alkalinity. Furthermore, the scavenging of hydroxyl radical by carbonate ion also contributed to the inhibitory effect of CO32−. On the other hand, the enhancement effect of CO32− depending on the increase in Fe(VI) stability was found, but did not exceed its inhibitory effect. In addition, 3,4-DCP removal kinetics was not affected by HCO3, while synergistically inhibited by CO32−/HCO3. Moreover, 3,4-DCP removal efficiency was substantially suppressed in the presence of CO32−, while the slight enhancement effect of HCO3 and the synergistic inhibitory effect of CO32−/HCO3 were observed. The experimental results clearly demonstrated that carbonate and bicarbonate ions play an important role in the process of 3,4-DCP removal by Fe(VI) and should not be considered only as scavengers.

Graphical Abstract

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

Similar content being viewed by others

Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

References

Download references

Funding

This work was funded by Chongqing Research Program of Basic Research and Frontier Technology (grant number cstc2017jcyjAX0452).

Author information

Authors and Affiliations

Authors

Contributions

Qing Zheng: conceptualization, methodology, investigation, data curation and analysis, writing — original draft. Yiwen Luo: data curation and analysis and writing — review and editing. Zhiyong Luo: conceptualization, methodology, investigation, data curation and analysis, writing — review and editing, supervision, and funding acquisition.

Corresponding author

Correspondence to Zhiyong Luo.

Ethics declarations

Ethical approval

Not applicable.

Consent to participate

Not applicable.

Consent for publication

Not applicable.

Competing interests

The authors declare no competing interests.

Additional information

Responsible Editor: George Z. Kyzas

Publisher's note

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

Highlights

• Removal kinetics was inhibited by CO32−, not affected by HCO3, synergistically inhibited by CO32−/HCO3.

• Removal efficiency was inhibited by CO32−, slightly enhanced by HCO3, synergistically inhibited by CO32−/HCO3.

• Experiments on pH effect, radical quenching, and Fe(VI) stability were conducted to explore possible reasons for their effects.

• Carbonate and bicarbonate play a significant role in removing 3,4-dichlorophenol.

• Scavenging reaction of free radical verified existence of •OH and its contribution.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 221 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

Zheng, Q., Luo, Y. & Luo, Z. Carbonate and bicarbonate ions impacts on the reactivity of ferrate(VI) for 3,4-dichlorophenol removal. Environ Sci Pollut Res 30, 27241–27256 (2023). https://doi.org/10.1007/s11356-022-24134-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11356-022-24134-x

Keywords

Navigation