Anaerobic Biodegradation of Polymer Composites Filled with Natural Fibers

Iwanczuk, Andrzej; Kozłowski, Marek; Łukaszewicz, Marcin; Jabłoński, Sławomir

doi:10.1007/s10924-014-0690-7

Cited by 28 publications

(12 citation statements)

References 24 publications

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“…The presence of the plant had a stronger effect on loss in PET tensile strength than inoculation with B. subtilis ( Table 4 ). Similar results have been reported by others ( Kim & Park, 2010 ; Iwanczuk et al, 2013 ).…”

Section: Resultssupporting

confidence: 93%

Combined use of Bacillus strains and Miscanthus for accelerating biodegradation of poly(lactic acid) and poly(ethylene terephthalate)

Dąbrowska

Janczak²,

Richert

2021

PeerJ

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Background The aim of this study was to verify whether the presence of Bacillus strains and of miscanthus influence biodegradation and formed of biofilm of poly(lactic acid) (PLA) and poly(ethylene terephthalate) (PET). Methods The experiment conducted in compost soil showed that strains Bacillus subtilis and Bacillus cereus isolated from heavy metal contaminated environment have biochemical activity and accelerate biodegradation of both plastic materials. Results For PLA film it was found that the carbonyl index dropped by over 15% in the presence of B. subtilis, while the film tensile strength decreased by 35% and the oxygen to carbon O/C ratio was higher by 3% in the presence of B. cereus, and the presence of miscanthus resulted in a loss of weight. For PET film, a decrease in the carbonyl index by 16% was observed following inoculation with B. cereus. The metabolic activity of this strain contributed to the reduction of the film’s tensile strength by 17% and to the increase in the permeability to O2 and CO2. The most intense degradation of PET film was observed in the presence of bacteria and plants. B. subtilis strain combined with miscanthus plantings may be a promising method for accelerating PLA and PET degradation in compost soil.

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Section: Resultssupporting

confidence: 93%

Combined use of Bacillus strains and Miscanthus for accelerating biodegradation of poly(lactic acid) and poly(ethylene terephthalate)

Dąbrowska

Janczak²,

Richert

2021

PeerJ

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“…To increase the quality and production of biogas, it is convenient to pre-incubate the microorganisms until 60% of CH 4 is reached [83]. This enrichment is commonly done in anaerobic digestion tests [61][62][63][83][84][85][86][87].…”

Section: Methodsmentioning

confidence: 99%

“…Respirometric tests allow the quantification of biodegradation, which is expressed as a percentage. Usually, the CH 4 or biogas produced is corrected subtracting the amount produced in a blank and then is compared to the theoretical production, based on the carbon content in the sample [84,[88][89][90][91][92][93][94]. Variations of this method include the measurement of CO 2 , and the inclusion of liquid and gas phases [87,95].…”

Section: Analytical Techniques Used To Assess Plastic Degradation Andmentioning

confidence: 99%

Degradation of Plastics under Anaerobic Conditions: A Short Review

et al. 2020

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Plastic waste is an issue of global concern because of the environmental impact of its accumulation in waste management systems and ecosystems. Biodegradability was proposed as a solution to overcome this problem; however, most biodegradable plastics were designed to degrade under aerobic conditions, ideally fulfilled in a composting plant. These new plastics could arrive to anaerobic environments, purposely or frequently, because of their mismanagement at the end of their useful life. This review analyzes the behavior of biodegradable and conventional plastics under anaerobic conditions, specifically in anaerobic digestion systems and landfills. A review was performed in order to identify: (a) the environmental conditions found in anaerobic digestion processes and landfills, as well as the mechanisms for degradation in those environments; (b) the experimental methods used for the assessment of biodegradation in anaerobic conditions; and (c) the extent of the biodegradation process for different plastics. Results show a remarkable variability of the biodegradation rate depending on the type of plastic and experimental conditions, with clearly better performance in anaerobic digestion systems, where temperature, water content, and inoculum are strictly controlled. The majority of the studied plastics showed that thermophilic conditions increase degradation. It should not be assumed that plastics designed to be degraded aerobically will biodegrade under anaerobic conditions, and an exact match must be done between the specific plastics and the end of life options that they will face.

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“…The non‐biodegradability of PP is the cause of many environmental problems associated with its disposal, including damage to the environment and ecosystem, water supplies, sewer systems as well as to the rivers and streams. Although some research studies have been performed on biodegradability of composites , to the best of our knowledge, no reports are available on biodegradability of PP/kenaf/PP‐g‐MA/MWCNT nano‐biocomposites. Harnnecker et al studied biodegradation behavior of polyester‐based blend reinforced with Curaua fiber in a laboratory‐made compost soil.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of viscoelastic, thermal, morphological, and biodegradation properties of polypropylene nano‐biocomposites using natural fiber and multi‐walled carbon nanotubes

Yaghoobi

Fereidoon

2018

Polymer Composites

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This article investigates the performances of polypropylene/kenaf fiber/polypropylene‐grafted maleic anhydride/multiwall carbon nanotube (PP/kenaf/PP‐g‐MA/MWCNT) nano‐biocomposites in terms of viscoelastic, thermal, and biodegradability properties. Nano‐biocomposites with kenaf weight content of 30 wt%, fiber length of 6 mm and different contents of MWCNTs (0.5–2 wt%) were produced for testing and characterization. The samples were made by melt compounding in Brabender internal mixer and then hot and cold pressing. The dynamic mechanical thermal analysis results showed that the incorporation of MWCNT enhanced the storage and loss moduli of the PP/kenaf/PP‐g‐MA biocomposites. Differential scanning calorimetry results depicted an increase in the melting and crystallization temperatures of PP/kenaf/PP‐g‐MA biocomposites with the increase of MWCNT contents. The biodegradation of biocomposites was investigated in the activated sludge on a laboratory scale for 10 months in order to study the rates of biodegradation of the samples. The biodegradability test conducted on each specimen illustrated that the produced biocomposites are subjected to partial biodegradation, judging by the change in mechanical properties and weight of them after the test. Morphological study which characterized using scanning electron microscopy technique verified that a good and homogeneous distribution of MWCNT through the biocomposites; however; some aggregates were revealed at higher MWCNTs content. POLYM. COMPOS., POLYM. COMPOS., 39:E592–E600, 2018. © 2018 Society of Plastics Engineers

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Anaerobic Biodegradation of Polymer Composites Filled with Natural Fibers

Cited by 28 publications

References 24 publications

Combined use of Bacillus strains and Miscanthus for accelerating biodegradation of poly(lactic acid) and poly(ethylene terephthalate)

Combined use of Bacillus strains and Miscanthus for accelerating biodegradation of poly(lactic acid) and poly(ethylene terephthalate)

Degradation of Plastics under Anaerobic Conditions: A Short Review

Evaluation of viscoelastic, thermal, morphological, and biodegradation properties of polypropylene nano‐biocomposites using natural fiber and multi‐walled carbon nanotubes

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