Biodegradation of blend films PVA/PVC, PVA/PCL in soil and soil with landfill leachate

Campos, Adriana de; Marconato, José Carlos; Martins-Franchetti, S. M.

doi:10.1590/s1516-89132011000600024

Cited by 66 publications

(26 citation statements)

References 33 publications

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“…PHB ( Figure 6a) and bacterial cellulose (Figure 7a) films before degradation presented smooth surface but with some According Campos et al, [34] since microorganisms are able to use surface polymeric components and its metabolism products their release aggressive metabolites such as organic acids and esterases on material surface damaging the area and accelerating the degradation. These morphological alterations caused by microbial colonization are one important factor for the break of polymer chains and for biodegradation.…”

Section: Biodegradation Evaluation Of Bacterial Cellulose Vegetable mentioning

confidence: 96%

“…These morphological alterations caused by microbial colonization are one important factor for the break of polymer chains and for biodegradation. It is known that the enzymatic hydrolysis of biodegradable polyesters mainly occur through surface erosion mechanisms, as cited in the literature [34,35] .…”

Section: Biodegradation Evaluation Of Bacterial Cellulose Vegetable mentioning

confidence: 99%

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Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

et al. 2015

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Section: Biodegradation Evaluation Of Bacterial Cellulose Vegetable mentioning

confidence: 96%

Section: Biodegradation Evaluation Of Bacterial Cellulose Vegetable mentioning

confidence: 99%

Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

et al. 2015

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“…In addition, some blends facilitate the biodegradation of the non-biodegradable component [22] or in some cases; the biodegradation is controlled by one of the components in the mixture, as already observed by some research groups [23,24] .…”

Section: Introductionmentioning

confidence: 64%

Biodegradation of films of low density polyethylene (LDPE), poly(hydroxibutyrate-co-valerate) (PHBV), and LDPE/PHBV (70/30) blend with Paecilomyces variotii

2015

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SbstractThe increased consumption of plastics in the world has been a subject of great concern and special attention by the scientific community. The aim is to promote development of materials that are biodegradable in a shorter time upon disposal in the environment. The most used synthetic plastics are difficult to biodegrade because they are made of long hydrocarbon chains, such as polyethylene (PE), polypropylene (PP), poly(vinyl chloride) (PVC), which are hydrophobic and resistant to the action of microbial enzymes. The use of alternative materials (natural polyesters) can minimize the harm to dumps and landfills upon their disposal, because they are susceptible to the action of microorganisms. In this study we evaluated the biodegradation/biodeterioration of PHBV (poly(3-hydroxybutyrate-co-hydroxyvalerate) films, LDPE (low density polyethylene) and the blend of LDPE/PHBV (70/30) by the fungus Paecilomyces variotii, using different methods: optical microscopy (OM), scanning electronic microscopy (SEM) and Fourier Transform Infrared spectroscopy (FTIR).

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“…(Calil et al 2006;Kaczmarek and Bajer 2007). de Campos et al (2011) also reported the PVC film in the soil showed some cavities, cracks, and fungal hyphae adhering to its surface. Incorporation of starch into plastics not only changed its mechanical properties, but also made the plastic susceptible to microorganism (Fanta et al 1992;Imam et al 1995;Kirbas et al 1999).…”

Section: Visual Observationmentioning

confidence: 93%

Biodegradation of starch blended polyvinyl chloride films by isolated Phanerochaete chrysosporium PV1

Ali

Ahmed

Iqbal

et al. 2013

Int. J. Environ. Sci. Technol.

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The accumulation of plastics in the environment is raising great concerns with respect to long-term environmental, economic and waste management problems. The aim of the present research was to investigate the biodegradability of starch blended polyvinyl chloride films in soil burial and controlled laboratory experiments using selective fungal isolates. Clear surface aberrations as color change and minor disintegration in polyvinyl chloride films were observed after 90 days and later confirmed through scanning electron microscopy. The fungal strains showing prominent growth and adherence on plastic films were isolated. One of the strains showing maximum activity was selected and identified as Phanerochaete chrysosporium PV1 by rDNA sequencing. Fourier transform infrared spectroscopy and nuclear magnetic resonance analyses indicated considerable structural changes and transformation in films in terms of appearance of new peaks at 3,077 cm -1 (corresponding to alkenes) and decrease in intensity of peaks at 2,911 cm -1 (C-H stretching). It was supported with a significant decrease in the molecular weight of polymer film from 80,275 to 78,866 Da (treated) through Gel permeation chromatography in shake flask experiment. Moreover, the biodegradation of starch blended polyvinyl chloride films was confirmed through release of higher CO 2 (7.85 g/l) compared to control (2.32 g/l) in respirometric method. So fungal strain P. chrysosporium PV1 has great potential for use in bioremediation of plastic waste.

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Biodegradation of blend films PVA/PVC, PVA/PCL in soil and soil with landfill leachate

Abstract: ABSTRACT

Cited by 66 publications

References 33 publications

Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

Biodegradation of films of low density polyethylene (LDPE), poly(hydroxibutyrate-co-valerate) (PHBV), and LDPE/PHBV (70/30) blend with Paecilomyces variotii

Biodegradation of starch blended polyvinyl chloride films by isolated Phanerochaete chrysosporium PV1

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