Biodegradation of photo-degraded mulching films based on polyethylenes and stearates of calcium and iron as pro-oxidant additives

Abrusci, C.; Pablos, Jesús L.; Corrales, Teresa; López‐Marín, Josefa; Marı́n, Irma; Catalina, F.

doi:10.1016/j.ibiod.2010.10.012

Cited by 145 publications

(84 citation statements)

References 31 publications

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“…Priyanka and Archana (2011) conducted a comparative analysis between the biodegradation of polythene and plastic by five different types of soil sample collected from different sources. Among various species of bacteria and fungus, Bacillus subtilis, A. niger, Aspergillus nidulance, Aspergillus flavus, Aspregillus glaucus, Penicillium, Pseudomonas, Staphylococcus aureus, Streptococcus lactis, Proteus vulgaris, Micrococcus were found to degrade polythene and plastic efficiently (Abrusci et al 2011;Aswale and Ade 2008;Kathiresan 2003;Nanda et al 2010;Reddy 2008). Esmaeili et al (2013) reported that Aspergillus sp., and Lysinibacillus sp., isolated from landfill soil sample were able to degrade LDPE efficiently.…”

Section: Identification Of Fungal Isolatementioning

confidence: 99%

Biodegradation of thermally treated low density polyethylene by fungus Rhizopus oryzae NS 5

et al. 2017

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Polythene is considered as one of the important object used in daily life. Being versatile in nature and resistant to microbial attack, they effectively cause environmental pollution. In the present study, biodegradation of low-density polyethylene (LDPE) have been performed using fungal lab isolate Rhizopus oryzae NS5. Lab isolate fungal strain capable of adhering to LDPE surface was used for the biodegradation of LDPE. This strain was identified as Rhizopus oryzae NS5 (Accession No. KT160362). Fungal growth was observed on the surface of the polyethylene when cultured in potato dextrose broth at 30°C and 120 rpm, for 1 month. LDPE film was characterized before and after incubation by Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy and universal tensile machine. About 8.4 ± 3% decrease (gravimetrically) in weight and 60% reduction in tensile strength of polyethylene was observed. Scanning electron microscope analysis showed hyphal penetration and degradation on the surface of polyethylene. Atomic force microscope analysis showed increased surface roughness after treatment with fungal isolate. A thick network of fungal hyphae forming a biofilm was also observed on the surface of the polyethylene pieces. Present study shows the potential of Rhizopus oryzae NS5 in polyethylene degradation in eco friendly and sustainable manner.

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Section: Identification Of Fungal Isolatementioning

confidence: 99%

Biodegradation of thermally treated low density polyethylene by fungus Rhizopus oryzae NS 5

et al. 2017

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“…Based on literature (Reddy et al 2008, Koutny et al 2008, Abrusci et al 2011, Kalus 2007, Sangwan and Dean 2011, Ohtake et al 1995, the carbonyl index (CI) of the spectra is defined as the ratio of the carbonyl absorption band at 1,714 cm −1 over the optical density of the methylene absorption band at 1,462 cm −1 (CH 2 scissoring peak).…”

Section: Determination Of the Thermal Properties Through Dsc Measuremmentioning

confidence: 99%

Analysis of long-term degradation behaviour of polyethylene mulching films with pro-oxidants under real cultivation and soil burial conditions

Briassoulis

Babou

Hiskakis

et al. 2014

Environ Sci Pollut Res

133

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Apart from the conventional polyethylene and the bio-based or mainly bio-based biodegradable in soil mulching films, polyethylene mulching films of controlled degradation in soil are already used in agriculture. The use of special pro-oxidants as additives is expected to accelerate the abiotic oxidation and the subsequent chain scission of the polymer under specific UV radiation or thermal degradation conditions, according to the literature. The role of pro-oxidants in the possible biodegradation of polyethylene has been theoretically supported through the use of controlled laboratory conditions. However, results obtained in real soil conditions, but also several laboratory test results, are not supporting these claims and the issue remains disputed. Mulching films made of linear low-density polyethylene (LLDPE) with pro-oxidants, after being used for one cultivation period in an experimental field with watermelon cultivation, were buried in the soil under real field conditions. This work presents the analysis of the degradation of the mulching films during the cultivation period as compared to the corresponding changes after a long soil burial period of 8.5 years. The combined effects of critical factors on the photochemical degradation of the degradable mulching LLDPE films with pro-oxidants under the cultivation conditions and their subsequent further degradation behaviour in the soil are analysed by testing their mechanical properties and through spectroscopic and thermal analysis.

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“…These materials have a high chemical and biological inertness, and therefore their degradation is very complex (Koutny et al 2006a). Consequently, they have accumulated in marine environments (Barnes et al 2009, Teuten et al 2009, HidalgoRuz et al 2012, Wright et al 2013, Gall and Thompson 2015, lakes (Free et al 2014, Driedger et al 2015 and soils (Andrady et al 1993, Xu et al 2006, Abrusci et al 2011. The persistence of polyolefins in the environment is also related to their content of additives, such as antioxidants, flame retardants, and stabilizers, which extend their life (Ammala et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The first one is related to recycling (Al-Salem et al 2010). The other strategy aims to design materials that after serving its life cycle (Koutny et al 2006b, Daglen andTyler 2010), may degrade into assimilable substances in the environment, attending to principles of green chemistry (Lucas et al 2008, Daglen and Tyler 2010, Abrusci et al 2011, Ammala et al 2011.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Conventional and Oxodegradable High Density Polyethylene in Tropical Aqueous and Outdoor Environments

Villamizar

Vázquez‐Morillas

2018

Rev. Int. Contam. Ambie.

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Polyethylene is widely used in packaging due to its chemical stability, lightness, impermeability and low cost. However, these properties become questionable when it is discarded. Oxodegradable plastics, which degrade by an abiotic-biotic process, have been promoted as a solution to the pollution caused by plastics. This research assesses the degradability of conventional and oxodegradable high density polyethylene in marine, freshwater, and outdoor tropical environments. Samples of these plastics, with and without previous abiotic degradation, were exposed to direct weathering in the Caribbean Sea and the Magdalena River, in Colombia. Their degradation was evaluated during six months by the formation of carbonyl groups, a decrease in elongation at break and visual evidence of deterioration. We found faster degradation for outdoor, followed by marine and freshwater conditions, evidencing that UV and temperature are the most relevant promoters of degradation, especially for oxodegradable plastics, as evidenced by the increase in carbonyl index. In aqueous environments, all specimens showed the formation of biofilm and in some cases cracks and fragmentation, especially in oxidized oxodegradable high density polyethylene specimens in the marine environment. Even if oxodegradables plastics, and in a lesser degree conventional ones, began their degradation process, they did not achieve complete disintegration or mineralization, due to lack of environmental conditions that can only be guaranteed in carefully monitored waste management systems.Palabras clave: contaminación por plásticos, microplásticos, ambientes acuáticos, fotooxidación RESUMENEl polietileno se utiliza ampliamente en el envasado debido a su estabilidad química, ligereza, impermeabilidad y bajo costo. Sin embargo, estas propiedades son cuestionables cuando se desecha. Los plásticos oxodegradables, que se degradan por un proceso abiótico-biótico, se han promovido como solución. Esta investigación evalúa la capacidad de descomposición del polietileno convencional de alta densidad y el oxodegradable en ambientes tropicales marinos, de agua dulce y a la intemperie. Las C.A. Arias-Villamizar and A. Vázquez-Morillas 138 muestras de polietileno convencional y oxodegradable, con y sin degradación abiótica previa, se expusieron en directo a la intemperie, en el mar Caribe y en el río Magdalena, en Colombia. Se evaluó su degradación durante seis meses por la formación de grupos carbonilo, la disminución del porcentaje de elongación a la ruptura y mediante evidencias visuales de deterioro. Se encontró degradación más rápida para las condiciones al aire libre, lo que demuestra que la radiación UV y el perfil de temperatura son los promotores más pertinentes de la degradación, especialmente en plásticos oxodegradables, como se evidencia por el aumento en el índice de carbonilo. En sistemas acuosos, todas las probetas exhibieron biopelícula, en algunos casos se encontraron grietas y se observó fragmentación. Especialmente se encontró este comportamiento en l...

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Biodegradation of photo-degraded mulching films based on polyethylenes and stearates of calcium and iron as pro-oxidant additives

Cited by 145 publications

References 31 publications

Biodegradation of thermally treated low density polyethylene by fungus Rhizopus oryzae NS 5

Biodegradation of thermally treated low density polyethylene by fungus Rhizopus oryzae NS 5

Analysis of long-term degradation behaviour of polyethylene mulching films with pro-oxidants under real cultivation and soil burial conditions

Degradation of Conventional and Oxodegradable High Density Polyethylene in Tropical Aqueous and Outdoor Environments

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