Biodegradation Process: Basics, Factors Affecting, and Industrial Applications

Koh, Lai Mun; Khor, Sook Mei

doi:10.1007/978-3-030-83783-9_66-1

Cited by 3 publications

(2 citation statements)

References 86 publications

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“…To assess whether the reactive melt processing and pulp fibers influence PBAT biodegradation, disintegration under composting conditions was carried out following the ISO 20200:2015 standard (Figures 8c and S7 in Supporting Information). The weight loss over 90 days of industrial composting shows that cross-linking increases PBAT disintegration rate, as a consequence of the larger polydispersity, as low molecular weight polyester chains are more readily available for microorganisms to biodegrade 47 thus catalyzing the PBAT disintegration (Figure 8d). Similar results have been reported for PCL biodegradation, enhanced by radiation cross-linking.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Reusable, Recyclable, and Biodegradable Heat-Shrinkable Melt Cross-Linked Poly(butylene adipate-co-terephthalate)/Pulp Biocomposites for Polyvinyl Chloride Replacement

Avella,

Salse,

Sessini

et al. 2024

ACS Sustainable Chem. Eng.

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Heat-shrinkable films are widely used as disposable secondary packaging but are conventionally made from fossilbased and nonbiodegradable polyvinyl chloride or polyethylene. To lower the environmental impact of such products, this work reports the development of recyclable, biodegradable, and partially biosourced heat-shrinkable biocomposites that are costcompetitive with existing shrink wraps. Poly(butylene adipate-co-terephthalate), a growing biodegradable thermoplastic, was simultaneously reinforced with pulp fibers and partially cross-linked in a single-step reactive melt processing. The designed peroxideinitiated reaction led to a 55 wt % cocontinuous insoluble gel incorporating all the pulp fibers into a cross-linked polymer network. In the solid state, the cross-linked biocomposite shows 60% elongation at break with a 200% increase in Young's modulus, while the only addition of pulp fibers stiffens and embrittles the matrix. Creep tests in the melt state indicated that the cross-linked network induces homogeneous shrinking even during the loading phase, demonstrating the potential use of the biocomposites as heatshrinkable films. The shrinking also promotes the shape-memory of the biocomposite, which retains its dimensions after four cycles. The circularity of the materials was assessed by mechanical recycling and industrial composting, which have proven feasible end-oflife options for heat-shrinkable biocomposites.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Reusable, Recyclable, and Biodegradable Heat-Shrinkable Melt Cross-Linked Poly(butylene adipate-co-terephthalate)/Pulp Biocomposites for Polyvinyl Chloride Replacement

Avella,

Salse,

Sessini

et al. 2024

ACS Sustainable Chem. Eng.

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“…Hence, there remained a notable gap in research concerning the evaluation of biodegradation mechanisms from a sufficiently comprehensive perspective. [45].…”

Section: Discussionmentioning

confidence: 99%

The Role of Biodegrading-bacteria to Remove Bisphenol-A from Polluted Soils

Hamad,

Al-Sabbagh,

Kadhim

2024

UPJOZ

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Background: Bisphenol A (BPA), is an organic component, functions as an endocrine disruptor (EDC). It ubiquitously exists in both, the environment and the food sources, leading to continuous and unintentional exposure among populations of human and animal. Aim of the Study: Investigate biodegradation activity of BPA by bacteria isolated from polluted soil with plastic wastes. Materials and Methods: 50 samples were taken from polluted soil with plastic wastes of different sites in Kerbala province; minimal salt media (MSM) were used to identify the capability of the isolates to bioremediate 200 mg/L, as a final concentration of BPA by using HPLC analysis. Results: the bacterial isolates could degrade the BPA in different ranges started from 18.7% to 99.9%. the recent study found that, Serratia plymuthica, Pantoea spp, Shingomonas paucimobilis, Pseudomonas aeruginosa and Bacillus spp. were more efficient in BPA biodegradation than Acinetobacter haemolyticus, Acinetobacter lwoffii, Escherichia coli and Proteus spp. Conclusion: Many types of bacterial isolates could convert the toxic organic compound Bisphenol A to another metabolites and according to recent study we could employee these activity to eliminate these materials safely from the polluted soils and water efficiently than using chemicals that might be toxic to environment, human being and animals.

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