Publication Details

Category Text Publication
Reference Category Journals
DOI 10.3390/polym15030660
Licence creative commons licence
Title (Primary) Degradation of bio-based and biodegradable plastic and its contribution to soil organic carbon stock
Author Guliyev, V.; Tanunchai, B.; Udovenko, M.; Menyailo, O.; Glaser, B.; Purahong, W.; Buscot, F.; Blagodatskaya, E.
Source Titel Polymers
Year 2023
Department BOOEK; iDiv
Volume 15
Issue 3
Page From art. 660
Language englisch
Topic T5 Future Landscapes
Keywords PBSA; soil respiration; bio-based and biodegradable plastic; isotopic fractionation; source partitioning; priming effect
Abstract Expanding the use of environmentally friendly materials to protect the environment is one of the key factors in maintaining a sustainable ecological balance. Poly(butylene succinate-co-adipate) (PBSA) is considered among the most promising bio-based and biodegradable plastics for the future with a high number of applications in soil and agriculture. Therefore, the decomposition process of PBSA and its consequences for the carbon stored in soil require careful monitoring. For the first time, the stable isotope technique was applied in the current study to partitioning plastic- and soil-originated C in the CO2 released during 80 days of PBSA decomposition in a Haplic Chernozem soil as dependent on nitrogen availability. The decomposition of the plastic was accompanied by the C loss from soil organic matter (SOM) through priming, which in turn was dependent on added N. Nitrogen facilitated PBSA decomposition and reduced the priming effect during the first 6 weeks of the experiment. During the 80 days of plastic decomposition, 30% and 49% of the released CO2 were PBSA-derived, while the amount of SOM-derived CO2 exceeded the corresponding controls by 100.2 and 132.3% in PBSA-amended soil without and with N fertilization, respectively. Finally, only 4.1% and 5.4% of the PBSA added into the soil was mineralized to CO2, in the treatments without and with N amendment, respectively.
Persistent UFZ Identifier
Guliyev, V., Tanunchai, B., Udovenko, M., Menyailo, O., Glaser, B., Purahong, W., Buscot, F., Blagodatskaya, E. (2023):
Degradation of bio-based and biodegradable plastic and its contribution to soil organic carbon stock
Polymers 15 (3), art. 660 10.3390/polym15030660