Environmental biodegradation of polyethylene

Bonhomme, S.; Cuer, A.; Delort, Anne-Marie; Lemaire, Jácques; Sancelme, Martine; Scott, Gerald

doi:10.1016/s0141-3910(03)00129-0

Cited by 469 publications

(283 citation statements)

References 9 publications

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“…Release rate is hypothesized to be not significantly influenced by microbiological decomposition, soil moisture, soil type or pH. However, all polymers eventually degrade in soil (Basfar et al, 2003;Bonhomme et al, 2003;Lehmann et al, 2000Lehmann et al, , 1998 and the degradation rate influences nutrient release from the polymer.…”

Section: Discussionmentioning

confidence: 99%

Matrix based fertilizers reduce nitrogen and phosphorus leaching in three soils

Entry

Sojka

2008

Journal of Environmental Management

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We compared the efficacy of matrix based fertilizers (MBFs) formulated to reduce NO À 3 , NH þ 4 , and total phosphorus (TP) leaching, with Osmocoate s 14-14-14, a conventional commercial slow release fertilizer (SRF) and an unamended control in three different soil textures in a greenhouse column study. The MBFs covered a range of inorganic N and P in compounds that are relatively loosely bound (MBF 1) to more moderately bound (MBF 2) and more tightly bound compounds (MBF 3) mixed with Al(SO 4 ) 3 H 2 O and/or Fe 2 (SO 4 ) 3 and with high ionic exchange compounds starch, chitosan and lignin. When N and P are released, the chemicals containing these nutrients in the MBF bind N and P to a Al(SO 4 ) 3 H 2 O and/or Fe 2 (SO 4 ) 3 starch-chitosan-lignin matrix. One milligram (8000 spores) of Glomus intradices was added to all formulations to enhance nutrient uptake. In all three soil textures the SRF leachate contained a higher amount of NH þ 4 , NO À 3 and TP than leachate from all other fertilizers. In all three soils there were no consistent differences in the amount of NH þ 4 , NO À 3 and TP in the MBF leachates compared to the control leachate. Plants growing in soils receiving SRF had greater shoot, root and total biomass than all MBFs regardless of Al(SO 4 ) 3 H 2 O or Fe 2 (SO 4 ) 3 additions. Arbuscular mycorrhizal infection in plant roots did not consistently differ among plants growing in soil receiving SRF, MBFs and control treatments. Although the MBFs resulted in less plant growth in this experiment they may be applied to soils growing plants in areas that are at high risk for nutrient leaching to surface waters. r

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Section: Discussionmentioning

confidence: 99%

Matrix based fertilizers reduce nitrogen and phosphorus leaching in three soils

Entry

Sojka

2008

Journal of Environmental Management

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“…Release rate is hypothized to not be significantly influenced by microbiological decomposition, soil moisture, soil type or pH. However, all polymers eventually degrade in soil (Basfar, Idriss Ali, & Mofti, 2003;Bonhomme et al, 2003;Lehmann, Miller, & Kozerski, 2000;Lehmann, Miller, Xu, Singh, & Reece, 1998) and the degradation rate will influence nutrient release from the polymer.…”

Section: Myc = Percent Arbuscular Mycorrhizal Infectionmentioning

confidence: 99%

Matrix Based Fertilizers Reduce Nitrogen and Phosphorus Leaching in Greenhouse Column Studies

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Sojka

2006

Water Air Soil Pollut

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We tested the efficacy of matrix based fertilizer formulations (MBF) that reduce NH4, total phosphorus (TP), total reactive phosphorus (TRP) and dissolved reactive phosphorus (DRP) in leachate. The MBF formulations cover a range of inorganic N and P in compounds that are relatively loosely bound (MBF1) to more moderately bound (MBF2) and more tightly bound compounds (MBF3) mixed with Al (SO4)3 H2O and/or Fe2(SO4)3 and with the high ionic exchange compounds starch, chitosan and lignin.Glomus interadicies, a species of arbuscular mycorrhizal fungal spores that will form mycorrhizae in high nutrient environments, was added to the MBF formulations to increase plant nutrient uptake. When N and P are released from the inorganic chemicals containing N and P the matrix based fertilizers likely bind these nutrients to the Al(50 4)3 H2O and/or Fe2(504)3 starch-chitosan-lignin matrix. We tested the efficacy of the MBFs to reduce N and P leaching compared to Osmocote ® 14-14-14, a slow release fertilizer (SRF) in sand filled columns in a greenhouse study. SRF with and without Al and Fe leached 78-84% more NH4, 58-78% more TP, 20-30% more TRP and 61-77% more than MBF formulations 1, 2, and 3 in a total of 2.0 liters of leachate after 71 days.

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“…Though the plasticizers used in TPE formulations can support microbial growth (Lugauskas et al, 2003), a structure composed solely of carbon and hydrogen make polymers resistant to biodegradation (Zheng et al, 2005). In spite of that, physical or chemical modification resulting from chemical hydrolysis, thermal or photodegradation cause a breakdown of the polymer chains and molecular weight reduction, rendering the polymer more susceptible to the action of living organisms (Bonhomme et al, 2003;Fontanella et al, 2013;Roé-Sosa et al, 2015;Portillo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Silver effect on the biodegradation process of styrene-ethylene/butylene-styrene based thermoplastic elastomers compounds upon weathering exposure

Tomacheski¹,

Pittol²,

Vier³

et al. 2018

Ecotoxicol. Environ. Contam.

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The incorporation of antibacterial additives in polymeric materials has become common to reduce the colonization of microorganisms in daily household items. This kind of product can be helpful to prevent diseases, but following the end of its useful lifetime, it might become an environmental problem, causing hazards also to the beneficial soil-borne microbes. This study aims to evaluate the effect of thermoplastic elastomers (TPEs) compounds loaded with silver ions (Ag + _bentonite, Ag + _phosphate) and nanoparticles (AgNp_silica) in the soil microbiota. Samples were exposed to weathering for 3, 6, 9 and 12 months, and monitored by carbon dioxide (CO 2 ) production in the soil for 4 months. Standard sample exposed to weather by 6, 9 and 12 months showed higher CO 2 production than samples unexposed or exposed for 3 months. By contrast, silver-loaded samples had higher CO 2 production in samples pre-aged for 3 months, but the values decreased in samples pre-aged for 6, 9 and 12 months. Moreover, soil microbial counts were lower in samples that had lower CO 2 production. Though the amount of silver in the soil has been lower than the limit of detection, after intense exposure to weather, the degradation of the polymer may have facilitated the release of silver from the TPE matrix, and on these terms, silver may have caused a harmful effect on soil fungi and bacterial population.

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Environmental biodegradation of polyethylene

Cited by 469 publications

References 9 publications

Matrix based fertilizers reduce nitrogen and phosphorus leaching in three soils

Matrix based fertilizers reduce nitrogen and phosphorus leaching in three soils

Matrix Based Fertilizers Reduce Nitrogen and Phosphorus Leaching in Greenhouse Column Studies

Silver effect on the biodegradation process of styrene-ethylene/butylene-styrene based thermoplastic elastomers compounds upon weathering exposure

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