Skip to main content
Log in

Assessment of the effects of soil organic matter and iron oxides on the individual sorption of two polycyclic aromatic hydrocarbons

  • Original Article
  • Published:
Environmental Earth Sciences Aims and scope Submit manuscript

Abstract

Soils are the ultimate sink for environmental pollutants like polycyclic aromatic hydrocarbons (PAHs), but the roles of major soil constituents in this process are still unclear. The fate of PAHs is governed by sorption processes which in turn affect transport, chemical and biological reactivity of these PAHs. Thus, the effects and contributions of two major soil constituents (organic matter-OM and iron oxides-IOs) on pyrene and fluorene sorption on soils were assessed by removal of both constituents. The whole soils had higher sorption than the treated OM/IOs soils. Pyrene sorption on OM-rich soils was high and nearly instantaneous, while on the IOs-rich soils, it was lower with delayed equilibrium. The IOs contributed < 25% to the sorption process while OM contributed ≥ 50%. The extent of PAHs desorption was dependent on the main constituent(s) on each soil; soils with high OM content exhibited lower desorption and high hysteresis. Hysteresis was higher for pyrene, and this was far obvious in the presence of OM; the hysteresis trend is whole > IOR > OMR soils. Though, removal of any of these soil constituents usually reduced sorption and enhanced sorbed PAHs desorption, the presence of IOs masked some PAHs sorption sites, thus its removal resulted in higher sorption. In general, this study highlights the contributions of soil OM and IOs on the sorption of pyrene and fluorene.

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

Similar content being viewed by others

Availability of data and materials

All relevant data have been analyzed and presented as Figures and graphs in the manuscript (some in the supporting information).

Code availability

 Not applicable.

References

Download references

Acknowledgements

We acknowledge the supports of the World Academy of Sciences (TWAS), Trieste Italy and the Chinese Academy of Sciences (CAS), China for the award of CAS-TWAS Postgraduate Fellowship (FR number: 3240255024) to PN Diagboya; and the Chief S.L. Edu/Chevron research grant; late Mrs. Rebecca A Okoh and Mr. VPO Okoh, Department of Estate Management, Yaba College of Technology, Lagos Nigeria, for partial funding.

Funding

All funders have been stated in the acknowledgement section.

Author information

Authors and Affiliations

Authors

Contributions

Bamidele I. Olu-Owolabi, Conceptualization; Project administration; Investigation; Methodology; Writing; Review and Editing. Paul N. Diagboya, Conceptualization; Data curation; Formal analysis; Investigation; Methodology; Project administration; Resources; Software; Validation; Writing; Review and Editing; Funding acquisition. Fanyana M. Mtunzi, Project administration; Funding acquisition. Kayode Adebowale, Project administration; Investigation.

Corresponding author

Correspondence to Paul N. Diagboya.

Ethics declarations

Conflicts of interests

There is no conflict of interest or competing interests.

Additional information

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.

12665_2021_9530_MOESM1_ESM.pdf

Supplementary file 1. Supplementary data to this article can be found online at https://doi.org/10.1007/s12665-021-09530-9. (PDF 827 KB)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Diagboya, P.N., Mtunzi, F.M., Adebowale, K.O. et al. Assessment of the effects of soil organic matter and iron oxides on the individual sorption of two polycyclic aromatic hydrocarbons. Environ Earth Sci 80, 227 (2021). https://doi.org/10.1007/s12665-021-09530-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s12665-021-09530-9

Keywords

Navigation