Seawater accelerated ageing of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

Deroiné, Morgan; Duigou, Antoine Le; Corre, Yves-Marie; Gac, Pierre‐Yves Le; Davies, Peter; César, Guy; Bruzaud, Stéphane

doi:10.1016/j.polymdegradstab.2014.04.026

Cited by 72 publications

(57 citation statements)

References 38 publications

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“…Polyhydroxybutyrate (PHB) bioplastic is biodegraded in aerobic and anaerobic engineered processes as well as natural environments; however anaerobic co-digestion of PHB for the express purpose of waste management and renewable energy has not been investigated (Abou-Zeid et al, 2004;Volova et al, 2010;Gómez and Michel, 2013;Deroiné et al, 2014). Budwill et al (1996) reported that PHB is anaerobically biodegradable in various scenarios but suggested that municipal anaerobic sewage sludge digesters were suitable PHB degrading environment to generate biomethane.…”

Section: Introductionmentioning

confidence: 99%

Pretreatment and Anaerobic Co-digestion of Selected PHB and PLA Bioplastics

Benn

Zitomer

2018

Front. Environ. Sci.

102

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Conventional petroleum-derived plastics are recalcitrant to biodegradation and can be problematic as they accumulate in the environment. In contrast, it may be possible to add novel, biodegradable bioplastics to anaerobic digesters at municipal water resource recovery facilities along with primary sludge to produce more biomethane. In this study, thermal and chemical bioplastic pretreatments were first investigated to increase the rate and extent of anaerobic digestion. Subsequently, replicate, bench-scale anaerobic co-digesters fed synthetic primary sludge with and without PHB bioplastic were maintained for over 170 days. Two polyhydroxybutyrate (PHB), one poly(3-hydroxybutyrate-co-4-hydroxybutyrate) and one polylactic acid (PLA) bioplastic were investigated. Biochemical methane potential (BMP) assays were performed using both untreated bioplastic as well as bioplastic pretreated at elevated temperature (35-90 • C) under alkaline conditions (8

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Section: Introductionmentioning

confidence: 99%

Pretreatment and Anaerobic Co-digestion of Selected PHB and PLA Bioplastics

Benn

Zitomer

2018

Front. Environ. Sci.

102

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“…for polyester biodegradation. However, an increasing number of studies have shown that most polyester‐based materials with good biodegradability in soil do not degrade or degrade very slowly in oceans; these materials include poly(lactic acid), polyhydroxybutyrate, poly(butylene succinate), and polycaprolactone . Oceans are characterized by high‐salt, high‐pressure, low‐temperature environments containing mobile and diluted nutrients.…”

Section: Introductionmentioning

confidence: 99%

Degradability comparison of poly(butylene adipate terephthalate) and its composites filled with starch and calcium carbonate in different aquatic environments

Wang

Huang

et al. 2018

J of Applied Polymer Sci

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We investigated the degradation behavior of biodegradable poly(butylene adipate terephthalate) (PBAT) and its composites containing starch (PBAT-starch) and calcium carbonate (PBAT-CaCO 3 ). The test splines were immersed in six different water bodies with various microbial compositions and salt concentrations for a 56 week period to obtain consistent experimental data. The results show that the pure PBAT degraded very slowly in the six water bodies, with a maximum weight loss of only 4.7% over the 56 week study period. Strips of the PBAT-starch composite showed a significantly accelerated biodegradation in microbe-containing water; the degree of degradation depended largely on the type and abundance of microorganisms in the water bodies. Conversely, compared with the pure PBAT strips, PBAT-CaCO 3 showed less degradation in the various water bodies. A comparison of degradability between the strips immersed in sterilized distilled water and sterilized seawater indicated that inorganic salts did not significantly affect the degradation of PBAT.

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“…Lotto et al 2004 evaluated the effect of temperature in the biodegradation of PHB in soil compost at 24 and 46°C. It is well known that the decrease of temperature reduces and can inhibit the bacterial activity decreasing the biodegradation rate, as verified by Deroiné et al (2014). It is well known that the decrease of temperature reduces and can inhibit the bacterial activity decreasing the biodegradation rate, as verified by Deroiné et al (2014).…”

Section: Biodegradation Of Polyhydoxyalkanoatesmentioning

confidence: 83%

“…The biodegradation of PHA has been verified in several environments, including different kinds of soil: garden soil, paddy field soil, farm soil, infertile garden soil, river bank soil (Wang et al 2005b), sea water (Akmal et al 2003;Deroiné et al 2014;Volova et al 2010;Wang et al 2005b); aerobic activated sludge (Akmal et al 2003;Wang et al 2005b); lake water (Akmal et al 2003), river water (Wang et al 2005b), waste landfill model reactors undergo aerobic and anaerobic conditions (Ishigaki et al 2004). Lotto et al 2004 evaluated the effect of temperature in the biodegradation of PHB in soil compost at 24 and 46°C.…”

Section: Biodegradation Of Polyhydoxyalkanoatesmentioning

confidence: 99%

Nanocomposites of Polyhydroxyalkanoates Reinforced with Carbon Nanotubes: Chemical and Biological Properties

Lemes

Montanheiro

Passador

et al. 2015

Advanced Structured Materials

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The polyhydroxyalkanoates (PHA) is one of the most investigated polymers in the development of eco-friendly nanocomposites. Biotechnology is used for their production and the mechanisms of their biodegradation make them very interesting polymers to replace conventional polymers in applications where the biodegradability is a desirable characteristic. PHA applications include medical field (suture fasteners, staples, screws, valves, orthopedic pins, etc.) besides agriculture and packaging sectors. The introduction of nanofillers in the polyhydroxyalkanoates matrixes is one of the ways used in an attempt to improve their properties or to reach new properties. With this goal, PHA/carbon nanotubes (CNT) nanocomposites have been quite studied. The remarkable properties shown by carbon nanotubes such as high Young's modulus, high thermal stability and electrical conductivity, and their low chemical reactivity is the key to achieve excellent properties from PHA nanocomposites, and to maintaining the matrix biodegradability. CNT cause changes in PHA characteristics that can affect the biodegradation rate as crystallinity degree, porosity, surface roughness, and hydrophilicity of polymer matrix. Many researches have shown the effects and advances caused by CNT filler in the mechanical resistance, crystallinity degree, thermal properties, and other important characteristics of PHA nanocomposites. However, these works have disregarded the study of the biodegradation of PHA/CNT nanocomposites, what is essential to define the application field of final product.

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Seawater accelerated ageing of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

Abstract: International audienc

Cited by 72 publications

References 38 publications

Pretreatment and Anaerobic Co-digestion of Selected PHB and PLA Bioplastics

Pretreatment and Anaerobic Co-digestion of Selected PHB and PLA Bioplastics

Degradability comparison of poly(butylene adipate terephthalate) and its composites filled with starch and calcium carbonate in different aquatic environments

Nanocomposites of Polyhydroxyalkanoates Reinforced with Carbon Nanotubes: Chemical and Biological Properties

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