Biochemical methane potential and active microbial communities during anaerobic digestion of biodegradable plastics at different inoculum-substrate ratios

Cazaudehore, G.; Guyoneaud, Rémy; Lallement, Audrey; Gassie, Claire; Monlau, Florian

doi:10.1016/j.jenvman.2022.116369

Cited by 25 publications

(5 citation statements)

References 70 publications

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“…PHB was found to be degraded by the genus Clostridium botulinum [ 97 ] and by consortia of Ilyobacter delafieldii , Enterobacterm and Cupriavidus [ 99 ]. Moreover, Yagi and colleagues tested PHB and detected Arcobacter thereius and Clostridium sp.…”

Section: Bioplastics Biodegradationmentioning

confidence: 99%

“…Several studies on PLA anaerobic degradation also reported the main microbial strains detected during the process. In many cases, lactic acid bacteria were observed, such as Moorella , Tepidimicrobium , Thermogutta [ 95 , 99 , 102 ]. When treating the polymer under mesophilic conditions, Xanthomonadaceae bacterium and Mesorhizobium sp.…”

Section: Bioplastics Biodegradationmentioning

confidence: 99%

“…Method: EN ISO 11734:2003 60 835 90 biogas FTIR, opt. microscopy [ 145 ] PLA PLA (NaturePlast) particles 1.01 mm (mean size) 58 I/S = 10 (VS basis) 100 456 87.3 CH 4 x [ 99 ] PLA PLA (NaturePlast) particles 1.01 mm (mean size) 58 I/S = 4 (VS basis) 100 423 81.0 CH 4 x PLA PLA (NaturePlast) particles 1.01 mm (mean size) …”

Section: Table A1mentioning

confidence: 99%

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Anaerobic Biodegradability of Commercial Bioplastic Products: Systematic Bibliographic Analysis and Critical Assessment of the Latest Advances

et al. 2023

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Bioplastics have entered everyday life as a potential sustainable substitute for commodity plastics. However, still further progress should be made to clarify their degradation behavior under controlled and uncontrolled conditions. The wide array of biopolymers and commercial blends available make predicting the biodegradation degree and kinetics quite a complex issue that requires specific knowledge of the multiple factors affecting the degradation process. This paper summarizes the main scientific literature on anaerobic digestion of biodegradable plastics through a general bibliographic analysis and a more detailed discussion of specific results from relevant experimental studies. The critical analysis of literature data initially included 275 scientific references, which were then screened for duplication/pertinence/relevance. The screened references were analyzed to derive some general features of the research profile, trends, and evolution in the field of anaerobic biodegradation of bioplastics. The second stage of the analysis involved extracting detailed results about bioplastic degradability under anaerobic conditions by screening analytical and performance data on biodegradation performance for different types of bioplastic products and different anaerobic biodegradation conditions, with a particular emphasis on the most recent data. A critical overview of existing biopolymers is presented, along with their properties and degradation mechanisms and the operating parameters influencing/enhancing the degradation process under anaerobic conditions.

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Section: Bioplastics Biodegradationmentioning

confidence: 99%

Section: Bioplastics Biodegradationmentioning

confidence: 99%

Section: Table A1mentioning

confidence: 99%

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Anaerobic Biodegradability of Commercial Bioplastic Products: Systematic Bibliographic Analysis and Critical Assessment of the Latest Advances

et al. 2023

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“…In the case of PHAs, chemical recycling approaches, such as pyrolysis, even result in the generation of heavily demanded unsaturated chemical synthons and precursor compounds to be used to produce a range of marketable products [ 54 ]. Such biopolymers can also be anaerobically digested and composted, which may be considered a form of biological recycling [ 55 , 56 , 57 ]. When leakage to the environment inevitably occurs, the materials safely degrade over a short time frame (typically < 1 year) into CO 2 and H 2 O, although this is strongly dependent on the given environment [ 58 ].…”

Section: Introductionmentioning

confidence: 99%

Carbon Recycling of High Value Bioplastics: A Route to a Zero-Waste Future

Keith,

Koller,

Lackner

2024

Polymers

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Today, 98% of all plastics are fossil-based and non-biodegradable, and globally, only 9% are recycled. Microplastic and nanoplastic pollution is just beginning to be understood. As the global demand for sustainable alternatives to conventional plastics continues to rise, biobased and biodegradable plastics have emerged as a promising solution. This review article delves into the pivotal concept of carbon recycling as a pathway towards achieving a zero-waste future through the production and utilization of high-value bioplastics. The review comprehensively explores the current state of bioplastics (biobased and/or biodegradable materials), emphasizing the importance of carbon-neutral and circular approaches in their lifecycle. Today, bioplastics are chiefly used in low-value applications, such as packaging and single-use items. This article sheds light on value-added applications, like longer-lasting components and products, and demanding properties, for which bioplastics are increasingly being deployed. Based on the waste hierarchy paradigm—reduce, reuse, recycle—different use cases and end-of-life scenarios for materials will be described, including technological options for recycling, from mechanical to chemical methods. A special emphasis on common bioplastics—TPS, PLA, PHAs—as well as a discussion of composites, is provided. While it is acknowledged that the current plastics (waste) crisis stems largely from mismanagement, it needs to be stated that a radical solution must come from the core material side, including the intrinsic properties of the polymers and their formulations. The manner in which the cascaded use of bioplastics, labeling, legislation, recycling technologies, and consumer awareness can contribute to a zero-waste future for plastics is the core topics of this article.

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“…In particular, treating bioplastics in an anaerobic digester would mean having the possibility to recover both materials and energy from them [4]. However, a comprehensive understanding of bioplastics' behaviour under a variety of environmental conditions is currently missing and the efficiency of the co-digestion with OFMSW is still under examination [5][6]. Full-scale digesters may need technical improvements to treat bioplastics and OFMSW while maintaining the quality of the final digestate [7].…”

Section: Introductionmentioning

confidence: 99%

Characterization of disposable Mater-Bi bioplastic by hyperspectral imaging for anaerobic biodegradation monitoring

Capobianco,

Falzarano,

Bonifazi

et al. 2024

Algorithms, Technologies, and Applications for Multispectral and Hyperspectral Imaging XXX

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An innovative approach based on hyperspectral imaging (HSI) was developed to monitor commercial starch-based (MaterBi®) disposable bioplastic behavior during anaerobic degradation. Mater-Bi® (MB) tableware items were selected among the ones available in supermarkets and compliant with the EN 13432 standard (EN 13432:2008). The MB items were manually cut in fragments with size ranging from 0.5 to 2 cm, removing the edges and the bottom to ensure test material homogeneity in terms of thickness. The anaerobic sludge was collected at a full-scale mesophilic anaerobic digestion plant treating a mixture of organic residues from food industries and was used as inoculum. Hyperspectral images of the samples composed of MB fragments dispersed in the anaerobic sludge were acquired in the short-wave infrared range (SWIR: 1000-2500 nm). A chemometric approach was then developed to analyze HSI data. In more detail, Principal Component Analysis (PCA) was applied for data exploration, followed by the implementation of a classification model based on Partial Least Square-Discriminant Analysis (PLS-DA) able to identify MB in the sludge. The achieved results are very promising, especially with reference to the possibility to adopt a fast strategy to monitor the behavior of MB during the anaerobic biodegradation process.

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Biochemical methane potential and active microbial communities during anaerobic digestion of biodegradable plastics at different inoculum-substrate ratios

Cited by 25 publications

References 70 publications

Anaerobic Biodegradability of Commercial Bioplastic Products: Systematic Bibliographic Analysis and Critical Assessment of the Latest Advances

Anaerobic Biodegradability of Commercial Bioplastic Products: Systematic Bibliographic Analysis and Critical Assessment of the Latest Advances

Carbon Recycling of High Value Bioplastics: A Route to a Zero-Waste Future

Characterization of disposable Mater-Bi bioplastic by hyperspectral imaging for anaerobic biodegradation monitoring

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