EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Decomposition of a bio-based plastic in soil: CO 2 source partitioning approach

Vusal Guliyev1,2, Benjawan Tanunchai1, Maria Udovenko1, Bruno Glaser3, Witoon Purahong1, and Evgenia Blagodatskaya1
Vusal Guliyev et al.
  • 1Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany (
  • 2Institute of Soil Science and Agro Chemistry, ANAS, Baku, Azerbaijan
  • 3Department of Soil Biogeochemistry, Martin Luther University Halle-Wittenberg, Germany

Expanding the use of environmentally friendly materials to protect the environment is one of the key factors in maintaining a sustainable ecological balance. Polybutylene succinate (PBS) and polybutylene succinate-co-adipate (PBSA) are considered the most promising biobased and biodegradable plastics for the future with a high number of applications. We used stable isotope techniques to partition plastic- and soil-originated C in the CO2 released in the course of PBSA plastic decomposition in the soil as dependent on nitrogen availability. Our 90 days laboratory experiment was conducted using a Haplic Chernozem soil from the conventional farming plot of the Global Change Experimental Facility (GCEF), Bad Lauchstädt, Central Germany. The experiment was designed as 4 treatments: two controls (non-amended soil and soil amended with (NH4)2SO4) and two plastic amendments (with (PSN) and without (PS) N). Nitrogen facilitated plastic decomposition by 6 weeks, increased the amount of decomposed plastic by 10% and reduced the priming effect by 26% during the experiment.

How to cite: Guliyev, V., Tanunchai, B., Udovenko, M., Glaser, B., Purahong, W., and Blagodatskaya, E.: Decomposition of a bio-based plastic in soil: CO 2 source partitioning approach, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-7526,, 2022.