Aging of biodegradable blended plastic generates microplastics and attached bacterial communities in air and aqueous environments

Bao, Ruiqi; Pu, Jingrun; Xie, Chaolin; Mehmood, Tariq; Chen, Wei; Liu, Gao; Lin, Wenlu; Su, Yuanyuan; Lin, Xubing; Peng, Licheng

doi:10.1016/j.jhazmat.2022.128891

Cited by 36 publications

(11 citation statements)

References 48 publications

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“…As the predominant microorganisms, these bacteria have been detected in wastewater and on the surface of the biofilm-attached MPs. , Compared to the S45 (water without TWPs), the relative abundance of Proteobacteria declined, whereas the opposite trend was observed with Cyanobacteria and Actinobacteriota. Moreover, the interaction between Cyanobacteria and MPs was substantial, attributable to the reality that Cyanobacteria represented the majority of microbial communities in the biofilms on distinct MPs . Besides, adhering to diverse surfaces via surface-associated protein, Actinobacteriota played a crucial role in the production of bioactive and recyclable compounds .…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the interaction between Cyanobacteria and MPs was substantial, attributable to the reality that Cyanobacteria represented the majority of microbial communities in the biofilms on distinct MPs. 33 Besides, adhering to diverse surfaces via surface-associated protein, Actinobacteriota played a crucial role in the production of bioactive and recyclable compounds. 34 At the genus level, the abundance of Nevskia in the W45 treatment increased significantly (Figure S5).…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Biofilm-Colonized versus Virgin Black Microplastics to Accelerate the Photodegradation of Tetracycline in Aquatic Environments: Analysis of Underneath Mechanisms

Ding

Ouyang

Zhang

et al. 2023

Environ. Sci. Technol.

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Tire wear particles (TWPs) exposed to the aquatic environment are rapidly colonized by microorganisms and provide unique substrates for biofilm formation, which potentially serve as vectors for tetracycline (TC) to influence their behaviors and potential risks. To date, the photodegradation capacity of TWPs on contaminants due to biofilm formation has not been quantified. To accomplish this, we examined the ability of virgin TWPs (V-TWPs) and biofilm-developed TWPs (Bio-TWPs) to photodegrade TC when exposed to simulated sunlight irradiation. V-TWPs and Bio-TWPs accelerated the photodegradation of TC, with rates (k obs) of 0.0232 ± 0.0014 and 0.0152 ± 0.0010 h–1, respectively (k obs increased by 2.5–3.7 times compared to that for only TC solution). An important factor of increased TC photodegradation behavior was identified and linked to the changed reactive oxygen species (ROS) of different TWPs. The V-TWPs were exposed to light for 48 h, resulting in more ROS for attacking TC, with hydroxyl radicals (•OH) and superoxide anions (O2 •–) playing a dominant role in TC photodegradation measured using scavenger/probe chemicals. This was primarily due to the greater photosensitization effects and higher electron-transfer capacity of V-TWPs in comparison to Bio-TWPs. In addition, this study first sheds light on the unique effect and intrinsic mechanism of the crucial role of Bio-TWPs in TC photodegradation, enhancing our holistic understanding of the environmental behavior of TWPs and the associated contaminants.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Biofilm-Colonized versus Virgin Black Microplastics to Accelerate the Photodegradation of Tetracycline in Aquatic Environments: Analysis of Underneath Mechanisms

Ding

Ouyang

Zhang

et al. 2023

Environ. Sci. Technol.

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“…[7][8][9] Although the mechanical properties are DOI: 10.1002/star.202200169 higher than the majority of biodegradable polyesters, their wide range of applications is constrained by their expensive price. [10][11][12] Starch is a kind of renewable resource, which can be acquired from a variety of plants and has many beneficial properties, such as being abundant, low price, high processability, and degradability. [13] Stretch ability of native starch is low but can be improved by the addition of plasticizers.…”

Section: Introductionmentioning

confidence: 99%

“…[ 7–9 ] Although the mechanical properties are higher than the majority of biodegradable polyesters, their wide range of applications is constrained by their expensive price. [ 10–12 ]…”

Section: Introductionmentioning

confidence: 99%

Biodegradable Poly (Butylene Adipate‐Co‐Terephthalate) and Thermoplastic Starch Sustainable Blends Modified by Epoxy‐Terminated Hyperbranched Polyester with Excellent Mechanical Properties and High Transparency

et al. 2023

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A kind of fully biodegradable poly (butylene adipate‐co‐terephthalate) (PBAT)/thermoplastic starch (TPS) blend is prepared by melt processing with epoxy‐terminated hyperbranched polymer (EHBP) as a modifier. The effect of EHBP on the performance of PBAT/TPS blends is investigated. The terminal epoxy group of EHBP can react with the hydroxyl and carboxyl groups of PBAT and TPS, which increases the compatibility of PBAT and TPS. Meanwhile, the formation of hydrogen bonds and chain entanglement increases the adhesion between PBAT and TPS, which improves the mechanical properties of the blends. When the content of EHBP is 3 phr, the elongation at break of TPS/PBAT/EHBP blends increases by 28.99% (from 260.32% to 335.79%) and the impact strength increases by 215.78% (from 9.38 to 29.62 kJ m−2). Scanning electron microscopy (SEM) images show that the compatibility of PBAT/TPS/EHBP blends gradually improves with the addition of EHBP. UV results show that the transparency of PBAT/TPS blends is greatly improved by the addition of EHBP, which also indicates the compatibility of PBAT and TPS is improved by the addition of EHBP. It provides an effective way to prepare PBAT blends with excellent properties through, an environmentally friendly and low‐cost processing method.

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“…2,3 It is frequently mixed with fillers or other polymers such as polylactic acid (PLA), starch, and lignin to reduce costs or increase mechanical performance. 4,5 Among them, lignin is an easily available byproduct of the pulp and paper industries that is mainly composed of three phenylpropane structures. The global annual output of technical lignin is over 50 million tons, while the percentage of high-value utilization is only around 5%.…”

Section: Introductionmentioning

confidence: 99%

A strong, tough and cost-effective biodegradable PBAT/lignin composite filmviaintrinsic multiple noncovalent interactions

et al. 2023

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Aging of biodegradable blended plastic generates microplastics and attached bacterial communities in air and aqueous environments

Cited by 36 publications

References 48 publications

Biofilm-Colonized versus Virgin Black Microplastics to Accelerate the Photodegradation of Tetracycline in Aquatic Environments: Analysis of Underneath Mechanisms

Biofilm-Colonized versus Virgin Black Microplastics to Accelerate the Photodegradation of Tetracycline in Aquatic Environments: Analysis of Underneath Mechanisms

Biodegradable Poly (Butylene Adipate‐Co‐Terephthalate) and Thermoplastic Starch Sustainable Blends Modified by Epoxy‐Terminated Hyperbranched Polyester with Excellent Mechanical Properties and High Transparency

A strong, tough and cost-effective biodegradable PBAT/lignin composite filmviaintrinsic multiple noncovalent interactions

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