Microbial Degradation of Natural and Synthetic Rubbers

Sarkar, Biraj; Mandal, Sukhendu

doi:10.1007/978-981-15-1812-6_21

Cited by 6 publications

(3 citation statements)

References 60 publications

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“…The current literature lacks sufficient information concerning the degradability of NBR gloves and the ability of microorganisms to utilize them as a sole carbon source. Previous research studies have predominantly focused on rubber latex gloves, with limited attention given to nitrile gloves, as existing studies have focused on the monomer constituents of polymers [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of Nitrile Gloves as Sole Carbon Source of Pseudomonas aeruginosa in Liquid Culture

Delgado-Nungaray,

Grajeda-Arias,

Reynaga-Delgado

et al. 2024

Polymers

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Nitrile gloves have become a significant environmental pollutant after the COVID-19 pandemic due to their single-use design. This study examines the capability of P. aeruginosa to use nitrile gloves as its sole carbon energy source. Biodegradation was determined by P. aeruginosa adapting to increasing nitrile glove concentrations at 1%, 3%, and 5% (w/v). The growth kinetics of P. aeruginosa were evaluated, as well as the polymer weight loss. Topographic changes on the glove surfaces were examined using SEM, and FT-IR was used to evaluate the biodegradation products of the nitrile gloves. Following the establishment of a biofilm on the glove surface, the nitrile toxicity was minimized via biodegradation. The result of the average weight loss of nitrile gloves was 2.25%. FT-IR analysis revealed the presence of aldehydes and aliphatic amines associated with biodegradation. SEM showed P. aeruginosa immersed in the EPS matrix, causing the formation of cracks, scales, protrusions, and the presence of semi-spherical particles. We conclude that P. aeruginosa has the capability to use nitrile gloves as its sole carbon source, even up to 5%, through biofilm formation, demonstrating the potential of P. aeruginosa for the degradation of nitrile gloves.

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Section: Introductionmentioning

confidence: 99%

Biodegradation of Nitrile Gloves as Sole Carbon Source of Pseudomonas aeruginosa in Liquid Culture

Delgado-Nungaray,

Grajeda-Arias,

Reynaga-Delgado

et al. 2024

Polymers

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“…Therefore, we hypothesized that the transformation of EPFRs might occur during the TWP aging processes, which further participate in the abiotic oxidation of 6PPD to 6PPD-Q in flooded soils. Additionally, soil microbial communities might facilitate the biotic aging of TWPs in soil when TWPs act as the sole carbon source for some bacteria and fungi . However, the release of antioxidants, commonly reported as 6PPD, , in the tire may suppress this phenomenon due to their inhibitory effects on bacteria and enzymes .…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, soil microbial communities might facilitate the biotic aging of TWPs in soil when TWPs act as the sole carbon source for some bacteria and fungi. 26 However, the release of antioxidants, commonly reported as 6PPD, 27,28 in the tire may suppress this phenomenon due to their inhibitory effects on bacteria and enzymes. 29 In short, the aging of TWPs in the real soil environment could be mediated by these factors above, whereas the 6PPD-Q formation during TWP aging processes is still poorly understood, hindering the ability to assess the profound impact of TWPs on soil ecosystems.…”

Section: ■ Introductionmentioning

confidence: 99%

Enhanced Formation of 6PPD-Q during the Aging of Tire Wear Particles in Anaerobic Flooded Soils: The Role of Iron Reduction and Environmentally Persistent Free Radicals

et al. 2023

Environ. Sci. Technol.

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Rapid urbanization drives increased emission of tire wear particles (TWPs) and the contamination of a transformation product derived from tire antioxidant, termed as N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone (6PPD-Q), with adverse implications for terrestrial ecosystems and human health. However, whether and how 6PPD-Q could be formed during the aging of TWPs in soils remains poorly understood. Here, we examine the accumulation and formation mechanisms of 6PPD-Q during the aging of TWPs in soils. Our results showed that biodegradation predominated the fate of 6PPD-Q in soils, whereas anaerobic flooded conditions were conducive to the 6PPD-Q formation and thus resulted in a ∼3.8-fold higher accumulation of 6PPD-Q in flooded soils than wet soils after aging of 60 days. The 6PPD-Q formation in flooded soils was enhanced by Fe reduction-coupled 6PPD oxidation in the first 30 days, while the transformation of TWP-harbored environmentally persistent free radicals (EPFRs) to superoxide radicals (O 2 •−) under anaerobic flooded conditions further dominated the formation of 6PPD-Q in the next 30 days. This study provides significant insight into understanding the aging behavior of TWPs and highlights an urgent need to assess the ecological risk of 6PPD-Q in soils.

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Examining the impact from incorporation of fatty acid in nitrile-based synthetic rubber: film properties and biodegradability

Boon,

Teo,

Hamid

et al. 2024

Polym. Bull.

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Microbial Degradation of Natural and Synthetic Rubbers

Cited by 6 publications

References 60 publications

Biodegradation of Nitrile Gloves as Sole Carbon Source of Pseudomonas aeruginosa in Liquid Culture

Biodegradation of Nitrile Gloves as Sole Carbon Source of Pseudomonas aeruginosa in Liquid Culture

Enhanced Formation of 6PPD-Q during the Aging of Tire Wear Particles in Anaerobic Flooded Soils: The Role of Iron Reduction and Environmentally Persistent Free Radicals

Examining the impact from incorporation of fatty acid in nitrile-based synthetic rubber: film properties and biodegradability

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