PMID: 11922068Apr 2, 2002Paper

Biodegradation of polylactide in aerobic and anaerobic thermophilic conditions

Chemosphere
Merja ItävaaraJohan-Fredrik Selin

Abstract

Biodegradable polymers are designed to resist a number of environmental factors during use, but to be biodegradable under disposal conditions. The biodegradation of polylactide (PLLA) was studied at different elevated temperatures in both aerobic and anaerobic, aquatic and solid state conditions. In the aerobic aquatic headspace test the mineralisation of PLLA was very slow at room temperature, but faster under thermophilic conditions. The clear effect of temperature on the biodegradability of PLLA in the aquatic tests indicates that its polymer structure has to be hydrolysed before microorganisms can utilise it as a nutrient source. At similar elevated temperatures, the biodegradation of PLLA was much faster in anaerobic solid state conditions than in aerobic aquatic conditions. The behaviour of PLLA in the natural composting process was similar to that in the aquatic biodegradation tests, biodegradation starting only after the beginning of the thermophilic phase. These results indicate that PLLA can be considered as a compostable material, being stable during use at mesophilic temperatures, but degrading rapidly during waste disposal in compost or anaerobic treatment facilities.

References

Dec 1, 1996·Applied Microbiology and Biotechnology·D JendrossekH G Schlegel

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Citations

Apr 3, 2008·Macromolecular Bioscience·Parveen Sangwan, Dong Yang Wu
Apr 2, 2013·Waste Management·Anu KapanenMerja Itävaara
Apr 19, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Mathew AnkerWilliam J Simonsick
May 19, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Pavla ŠmejkalováSoňa Hermanová
Jul 16, 2019·Environmental Technology·Khadija MbarkiAdel Sayari
Oct 7, 2019·Chemistry : a European Journal·Ruth D RittinghausSonja Herres-Pawlis
Apr 4, 2021·International Journal of Molecular Sciences·Grażyna B DąbrowskaAgnieszka Mierek-Adamska
Jun 1, 2021·Frontiers in Chemistry·Shinhyeong ChoeJaewook Myung
May 19, 2021·Environmental Toxicology and Chemistry·Ryosuke NabeokaTomohiko Yoshida
Aug 7, 2021·International Journal of Biological Macromolecules·Noor Afizah RosliIshak Ahmad
Oct 20, 2017·Chemical Reviews·Xiangyi ZhangRobert M Waymouth
Sep 14, 2004·Biomacromolecules·Dunja-Manal Abou-ZeidWolf-Dieter Deckwer
Aug 8, 2021·ChemSusChem·Claudio GioiaAnnamaria Celli

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