Skip to main content
Log in

Effects of tall fescue biochar on the adsorption and desorption of atrazine in different types of soil

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

Abstract

The excessive application of atrazine in agriculture has resulted in serious environmental contamination. The addition of biochar could reduce the bioavailability and mobility of atrazine in soil through adsorption–desorption processes. In this study, tall fescue biochar was prepared at 500 °C, and its effect on the adsorption–desorption behavior of atrazine in red soil, brown soil, and black soil was investigated. The tall fescue biochar with the pH value of 9.64 had a developed porous structure and large specific area that contained abundant surface functional groups. The element composition of the tall fescue biochar was C (50.46%), O (15.01%), N (4.54%), H (2.56%), and S (1.47%). The adsorption process of atrazine in the three soil types with and without biochar addition was divided into a fast stage, slow stage, and equilibrium stage. A pseudo second-order kinetic model was suitable for fitting the adsorption process of atrazine, and the determination coefficient (R2) ranged from 0.985 to 0.999. The adsorption–desorption processes of atrazine were described accurately by the Freundlich model (R2 of 0.967–0.999). The adsorption capacity of the three soil types for atrazine increased significantly with the addition of biochar, whereby the equilibrium adsorption amount increased from an initial range of 3.968 to 5.902 μg g−1 to a final range of 21.397 to 21.968 μg g−1. The desorption of atrazine was also inhibited as the hysteresis coefficient (HI) increased from an initial range of 0.451 to 0.586 to a final range of 0.916 to 0.941. The adsorption capacity of the red soil improved more than did the brown soil or black soil. Moreover, spontaneous adsorption of atrazine by the biochar–soil system occurred more easily at 35 °C than at 15 °C and 25 °C. Overall, tall fescue biochar was a prospective soil amendment material.

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

Data availability

The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

References

Download references

Funding

This study was supported by the National Natural Science Foundation of China (grant numbers 41501542 and 41471389).

Author information

Authors and Affiliations

Authors

Contributions

Wanting Li performed the experiment, analyzed and interpreted the data of experiment, writing—original draft.

Ruifeng Shan designed the project of experiment, writing—review and editing, funding acquisition.

Yuna Fan took part in the experiment.

Xiaoyin Sun took part in writing—review and editing and funding acquisition.

All authors read and approved the final manuscript.

Corresponding author

Correspondence to Ruifeng Shan.

Ethics declarations

Competing interests

The authors declare that they have no competing interests.

Ethics approval and consent to participate

Not applicable.

Consent for publication

Not applicable.

Additional information

Responsible Editor: Zhihong Xu

Publisher’s note

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

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Li, W., Shan, R., Fan, Y. et al. Effects of tall fescue biochar on the adsorption and desorption of atrazine in different types of soil. Environ Sci Pollut Res 28, 4503–4514 (2021). https://doi.org/10.1007/s11356-020-10821-0

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11356-020-10821-0

Keywords

Navigation