Recycling strategies for polyhydroxyalkanoate-based waste materials: An overview

Vu, Danh H.; Åkesson, Dan; Taherzadeh, Mohammad J.; Ferreira, Jorge A.

doi:10.1016/j.biortech.2019.122393

Cited by 75 publications

(53 citation statements)

References 66 publications

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“…Packaging [5] Sponge cloths [73] Electronics applications [5] Starch-based Films [74] Rigid materials (such as plates and cutlery and foams) [74,75] Packaging [30,75] Medical products [30,75] Agriculture [30,39,76] Carrier bags [16,77] PLA-based Packaging [30,38,74,78] Disposable or durable goods [74] Electronics applications [38] Fibres [38] Medical products [30] Building and construction [78] Agricultural field [30,38] Textiles and films [64] PHA-based Medical products [30,74,[79][80][81][82] Agriculture [30,74] Packaging [30,82] Petroleum-based Medical products [30] Packaging [30] Agriculture [39] As shown in Table 2, bioplastics are used in a wide range of applications. This is attributed to the fact that several desired characteristics can be obtained (such as, flexibility, strength, shape memory capability, or resistance to liquids) by easily changing the processing conditions during their production.…”

Section: Cellulose-basedmentioning

confidence: 99%

“…Bioplastics made from starch can be used for packaging apples and tomato slices with a high protective barrier [86]. PHAs are used in domestic, agricultural, industrial, and medical fields [82] because of their properties of water insolubility, ultraviolet resistance, and good barrier from oxygen penetration [87].…”

Section: Cellulose-basedmentioning

confidence: 99%

“…Each should be treated by a different waste management option according to its characteristics [52]. Fossil-based polymers have been only minimally replaced by bioplastics and the impact of these new materials on waste accumulation is still not completely evaluated [82]. Although petroleum-and bio-based plastics may have similar mechanical properties, they are produced from different raw materials, thus the introduction of bioplastics in treatment/recycling systems used for traditional plastics is not feasible.…”

Section: Waste Management Options For Bioplasticsmentioning

confidence: 99%

“…Although petroleum-and bio-based plastics may have similar mechanical properties, they are produced from different raw materials, thus the introduction of bioplastics in treatment/recycling systems used for traditional plastics is not feasible. In this sense, the redesign of current recycling systems is needed to further limit the potential environmental impact of bioplastics [16,82] and to avoid an excessive resource use. On the other hand, products like PLA can be processed by several waste recovery methods, such as mechanical recycling and chemical recycling [36].…”

Section: Waste Management Options For Bioplasticsmentioning

confidence: 99%

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Biodegradation of Wasted Bioplastics in Natural and Industrial Environments: A Review

et al. 2020

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The problems linked to plastic wastes have led to the development of biodegradable plastics. More specifically, biodegradable bioplastics are the polymers that are mineralized into carbon dioxide, methane, water, inorganic compounds, or biomass through the enzymatic action of specific microorganisms. They could, therefore, be a suitable and environmentally friendly substitute to conventional petrochemical plastics. The physico-chemical structure of the biopolymers, the environmental conditions, as well as the microbial populations to which the bioplastics are exposed to are the most influential factors to biodegradation. This process can occur in both natural and industrial environments, in aerobic and anaerobic conditions, with the latter being the least researched. The examined aerobic environments include compost, soil, and some aquatic environments, whereas the anaerobic environments include anaerobic digestion plants and a few aquatic habitats. This review investigates both the extent and the biodegradation rates under different environments and explores the state-of-the-art knowledge of the environmental and biological factors involved in biodegradation. Moreover, the review demonstrates the need for more research on the long-term fate of bioplastics under natural and industrial (engineered) environments. However, bioplastics cannot be considered a panacea when dealing with the elimination of plastic pollution.

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Section: Cellulose-basedmentioning

confidence: 99%

Section: Cellulose-basedmentioning

confidence: 99%

Section: Waste Management Options For Bioplasticsmentioning

confidence: 99%

Section: Waste Management Options For Bioplasticsmentioning

confidence: 99%

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Biodegradation of Wasted Bioplastics in Natural and Industrial Environments: A Review

et al. 2020

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“…It was concluded that the use of a medium containing 2% (w/v) fructose, 0.3% (w/v) yeast extract, and 5% (w/v) sodium chloride (NaCl) in M9 minimal medium resulted in high PHA (54.7%) and biomass (4.94 g/L) contents. The structure and physical properties of PHAs vary depending on the bacteria specie, substrate (carbon source), and cultivation conditions (13). PHAs are a typically linear aliphatic polyesters consisting of repetitive hydroxy acids (HAs) connected together by an ester bond (14).…”

Section: Introductionmentioning

confidence: 99%

Development of Electrospun Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Monolayers Containing Eugenol and Their Application in Multilayer Antimicrobial Food Packaging

et al. 2020

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In this research, different contents of eugenol in the 2.5-25 wt.% range were first incorporated into ultrathin fibers of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) by electrospinning and then subjected to annealing to obtain antimicrobial monolayers. The most optimal concentration of eugenol in the PHBV monolayer was 15 wt.% since it showed high electrospinnability and thermal stability and also yielded the highest bacterial reduction against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). This eugenol-containing monolayer was then selected to be applied as an interlayer between a structural layer made of a cast-extruded poly(3-hydroxybutyrate) (PHB) sheet and a commercial PHBV film as the food contact layer. The whole system was, thereafter, annealed at 160 • C for 10 s to develop a novel multilayer active packaging material. The resultant multilayer showed high hydrophobicity, strong adhesion and mechanical resistance, and improved barrier properties against water vapor and limonene vapors. The antimicrobial activity of the multilayer structure was also evaluated in both open and closed systems for up to 15 days, showing significant reductions (R ≥ 1 and < 3) for the two strains of food-borne bacteria. Higher inhibition values were particularly attained against S. aureus due to the higher activity of eugenol against the cell membrane of Gram positive (G+) bacteria. The multilayer also provided the highest antimicrobial activity for the closed system, which better resembles the actual packaging and it was related to the headspace accumulation of the volatile compounds. Hence, the here-developed multilayer fully based on polyhydroxyalkanoates (PHAs) shows a great deal of potential for antimicrobial packaging applications using biodegradable materials to increase both quality and safety of food products.

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Bioplastics, Biocomposites and Biobased Polymers—Applications and Innovative Approaches for Sustainability

Sharma

Singh

Srivastava³

et al. 2022

Handbook of Bioplastics and Biocomposites Engineering Applications

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Recycling strategies for polyhydroxyalkanoate-based waste materials: An overview

Cited by 75 publications

References 66 publications

Biodegradation of Wasted Bioplastics in Natural and Industrial Environments: A Review

Biodegradation of Wasted Bioplastics in Natural and Industrial Environments: A Review

Development of Electrospun Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Monolayers Containing Eugenol and Their Application in Multilayer Antimicrobial Food Packaging

Bioplastics, Biocomposites and Biobased Polymers—Applications and Innovative Approaches for Sustainability

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