Rapid biodegradation of renewable polyurethane foams with identification of associated microorganisms and decomposition products

Gunawan, Natasha R.; Tessman, Marissa; Schreiman, Ariel C.; Simkovsky, Ryan; Samoylov, Anton A.; Neelakantan, Nitin K.; Bemis, Troy A.; Burkart, Michael D.; Pomeroy, Robert S.; Mayfield, Stephen P.

doi:10.1016/j.biteb.2020.100513

Cited by 42 publications

(24 citation statements)

References 39 publications

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“…More recently ( Zhang et al, 2018 , 2019 ), following a 65-day anaerobic breakdown of plastic, it was revealed that the percentage of solid material in LDPE and PP was lowered by 1.5 and 2.0%, respectively. Regardless of how plastic waste is biodegraded, with some microorganisms emerging as a study subject, there is still a long way to go before petroleum-based plastics can be considered biodegradable ( Baskaran and Rajamanickam, 2019 ; Gunawan et al, 2020 ; Li et al, 2020 ). A major research gap that has been identified is a microorganism capable of digesting plastic is as a model organism for further detailed research.…”

Section: Microbial Enzymes: a Potential Solution For Green Recyclingmentioning

confidence: 99%

“…The process of enzymatic microbial degradation usually comprises the breaking of polymer bonds to produce smaller monomer components that can be processed further ( Koshti et al, 2018 ). Petroleum-based polymers degrade slowly and research into their biodegradation is in its infancy, despite recent studies examining the biodegradation of plastic waste using specialized microbial strains ( Baskaran and Rajamanickam, 2019 ; Gunawan et al, 2020 ; Li et al, 2020 ). A critical research gap is the lack of well-characterized microbes capable of digesting plastic that can be employed as model organisms for further investigations.…”

Section: Introduction: Plastic Waste An Enormous Ecological Emergencymentioning

confidence: 99%

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Potential Use of Microbial Enzymes for the Conversion of Plastic Waste Into Value-Added Products: A Viable Solution

et al. 2021

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The widespread use of commercial polymers composed of a mixture of polylactic acid and polyethene terephthalate (PLA-PET) in bottles and other packaging materials has caused a massive environmental crisis. The valorization of these contaminants via cost-effective technologies is urgently needed to achieve a circular economy. The enzymatic hydrolysis of PLA-PET contaminants plays a vital role in environmentally friendly strategies for plastic waste recycling and degradation. In this review, the potential roles of microbial enzymes for solving this critical problem are highlighted. Various enzymes involved in PLA-PET recycling and bioconversion, such as PETase and MHETase produced by Ideonella sakaiensis; esterases produced by Bacillus and Nocardia; lipases produced by Thermomyces lanuginosus, Candida antarctica, Triticum aestivum, and Burkholderia spp.; and leaf-branch compost cutinases are critically discussed. Strategies for the utilization of PLA-PET’s carbon content as C1 building blocks were investigated for the production of new plastic monomers and different value-added products, such as cyclic acetals, 1,3-propanediol, and vanillin. The bioconversion of PET-PLA degradation monomers to polyhydroxyalkanoate biopolymers by Pseudomonas and Halomonas strains was addressed in detail. Different solutions to the production of biodegradable plastics from food waste, agricultural residues, and polyhydroxybutyrate (PHB)-accumulating bacteria were discussed. Fuel oil production via PLA-PET thermal pyrolysis and possible hybrid integration techniques for the incorporation of thermostable plastic degradation enzymes for the conversion into fuel oil is explained in detail.

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Section: Microbial Enzymes: a Potential Solution For Green Recyclingmentioning

confidence: 99%

Section: Introduction: Plastic Waste An Enormous Ecological Emergencymentioning

confidence: 99%

Potential Use of Microbial Enzymes for the Conversion of Plastic Waste Into Value-Added Products: A Viable Solution

et al. 2021

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“…For example, aliphatic poly(ester urethane) prepared by chain-extension of the polyester diol of poly(butylene cyclohexane dicarboxylate) and poly(butylene succinate-co-glycolate) with hexamethylene diisocyanate in compost at 58 °C showed a maximum weight loss of 63% in almost three months, 30 whereas algae-based poly(ester urethane) showed only 30 wt% loss in almost the same time. 31 PU foam based on liquified wood polyols showed oxidative biodegradation of the soft segment (16.54%) in one year in the soil burial test at 30 °C. 32 Similar results were obtained from PUs prepared from liquified waste-paper and straw; less than 20 wt% loss occurred in 6 months when buried in leaf mold.…”

Section: Introductionmentioning

confidence: 99%

Tailor-made compostable polyurethanes

Kumar

Gharibi

et al. 2022

Polym. Chem.

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“…In addition to proteinase K from Tritirachium album, subtilisin, a microbial serine protease and some mammalian serine proteases such as alpha-chymotrypsin, trypsin, and elastase could also degrade PLA [15]. An efficient degrader of PLA is Actinomycetes belonging to Amycolatopsis genus, which might play an important role in PLA natural biodegradation [21][22][23][24]. Besides the ability for PLA degrading, the microbial secreted enzymes hydrolyze other substrates with the same constitutive units as PLA, α-amide and α-ester.…”

Section: Introductionmentioning

confidence: 99%

The 3D/4D Printing Defects and Their Influence on the Functional Behavior of the Achieved Items from Renewable Compounds. (I)

Dimonie¹,

Dragomir²,

Trușcă³

et al. 2021

Mater. Plast.

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The paper is part of a series in which the influence of the manufacturing defects on the functional behavior in biodegradation medium of some items obtained, both by 3D printing and by classical procedure (pressing), from an originaly renwable matrials based on polylatic acid will be presented. The first results regarding the correlation of the defects appeared at manufacturing into plates with the biodegradation behavior in an Aspergillus Niger(A.niger) medium, studied by SEM microscopy, are presented. These results demonstrated that the development of the A. Niger microorganism is related manly to the defects appeared at the melt processing of renewable polymeric material into finished product. A notable role in controlling the appearance of the manufacturing defects belongs both to the melt rheological properties which are responsible for the continuous or discontinuous flow and to the technical performance of the used equipement, 3D printer or classic hydraulic press. If the polymeric material melt has too high viscosity than the continuous flow is not possible and so the overlapped melt fronts are created which generate the voids formation, sometimes joined by small nano and/or micrometric channels. The rheological properties of the melts depend both on the material formulation and the seleted melt processing conditions.

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Rapid biodegradation of renewable polyurethane foams with identification of associated microorganisms and decomposition products

Cited by 42 publications

References 39 publications

Potential Use of Microbial Enzymes for the Conversion of Plastic Waste Into Value-Added Products: A Viable Solution

Potential Use of Microbial Enzymes for the Conversion of Plastic Waste Into Value-Added Products: A Viable Solution

Tailor-made compostable polyurethanes

The 3D/4D Printing Defects and Their Influence on the Functional Behavior of the Achieved Items from Renewable Compounds. (I)

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