Evaluation of the biodegradation of polymeric materials in the freshwater environment—An attempt to prolong and accelerate the biodegradation experiment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F22%3A63554839" target="_blank" >RIV/70883521:28110/22:63554839 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0141391022002634?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0141391022002634?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2022.110085" target="_blank" >10.1016/j.polymdegradstab.2022.110085</a>

Result language

angličtina

Original language name

Evaluation of the biodegradation of polymeric materials in the freshwater environment—An attempt to prolong and accelerate the biodegradation experiment

Original language description

Available international standards describing the biodegradability testing in freshwater were designed primarily for chemicals that undergo relatively fast biodegradation (in the order of days). The current study was undertaken to verify their applicability for testing of slowly degradable polymeric materials, and also describes an attempt to accelerate the biodegradation testing by the increase of the incubation temperature from 25 °C to 37 °C. The polymers tested include TÜV AUSTRIA Belgium certified polyhydroxyalkanoate (PHA), polybutylene succinate (PBS), polybutylene adipate-terephthalate, and polylactic acid blend (PBAT/PLA), and an experimental polyester network (ICL-PN). The biodegradation rates of the given polymers at the two temperatures were examined by carbon dioxide evolution and additional information was collected from microscopy observations of the materials and the investigation of the microbial community composition and dynamics. Testing was done at two independent laboratories and the results were compared. It was found that at 25 °C the testing environment was relatively stable, and the incubation can be prolonged up to 12 months. At 37 °C however some undesirable phenomena like higher variability between replicates and laboratories, fungi development, and biomass autolysis were observed. Moreover, the increase in temperature did not accelerate the biodegradation process. Based on the comparison of results from the two laboratories, recommendations for the experimental procedure are given.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Polymer Degradation and Stability

ISSN

0141-3910

e-ISSN

—

Volume of the periodical

203

Issue of the periodical within the volume

Neuveden

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

nestrankovano

UT code for WoS article

000885390500003

EID of the result in the Scopus database

2-s2.0-85134807561