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Velasquez JA, Bao Y, Huang JY. Atmospheric cold plasma as a novel approach to remediating microplastics pollution in water. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 356:124390. [PMID: 38897278 DOI: 10.1016/j.envpol.2024.124390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 06/13/2024] [Accepted: 06/17/2024] [Indexed: 06/21/2024]
Abstract
Microplastics (MPs) have become an environmental and health threat to aquatic species and humans because they are small and can easily reach water bodies for municipal and agricultural uses. MPs have been traced in food commodities and products derived from animals and even found in bottles of drinking water. Current treatment techniques for permanently destroying MPs require high energy inputs and thus are generally cost-inefficient. Atmospheric cold plasma (ACP) is a low-cost energy-efficient technology to produce highly reactive species that can induce physicochemical changes in plastic polymers. This study, for the first time, used ACP as a novel method for MPs treatment. Polypropylene (PP) and low-density polyethylene (LDPE) were used to prepare model MPs. The effects of plasma working gas (oxygen, nitrogen, or their mixture) and post-ACP treatment storage (24 h) on MPs were studied. ACP treatments for 30 min successfully degraded both MPs, by 1.4-11.3% in weight. PP MPs had larger weight reduction than LDPE and the ACP of mixture gas was most effective. PP MPs also showed increased carbonyl index after treatments, to up to 6.89, indicating hydrolytic degradation. For LDPE MPs, oxygen ACP caused more oxidation, but storage did not have an enhancing effect. The results of physicochemical analyses indicated that MPs degradation by ACP was possibly mainly through oxidative and hydrolytic reactions, but further characterizations are needed. This study proves that ACP is a promising strategy to remediate MPs pollution, and thus has great potential for addressing the severe challenges of MPs that the food and agriculture sectors are currently facing.
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Affiliation(s)
| | - Yiwen Bao
- Department of Food Science, Purdue University, West Lafayette, IN, 47907, USA
| | - Jen-Yi Huang
- Department of Food Science, Purdue University, West Lafayette, IN, 47907, USA; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, 47907, USA; Environmental and Ecological Engineering, Purdue University, West Lafayette, IN, 47907, USA.
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2
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Hiranphinyophat S, Hiraoka T, Kobayashi M, Fujii S, Kishida A, Tanabe T, Kimura T, Yamamoto M. Fabrication of Polypropylene Nanoplastics Via Thermal Oxidation Reaction for Human Cells Responsiveness Studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15563-15571. [PMID: 37882450 DOI: 10.1021/acs.langmuir.3c01858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
With the current worldwide increasing use of plastics year by year, nanoplastics (NPs) have become a global threat to environmental and public health concerns. Among plastics, polypropylene (PP) is widely used in industrial and medical applications. Owing to the lack of validated detection methods and standard materials for PP NPs, understanding the impact of PP NPs on the environmental and biological systems is still limited. Here, isotactic polypropylene (iPP) was fabricated into oxidized polypropylene micro/nanoplastics (OPPs) via a thermal oxidation using hydrogen peroxide (H2O2) under various heating temperatures. The resulting OPPs were investigated in terms of the size distribution, surface chemistry, morphology, and thermal property as well as their concentration-dependent cytotoxicity to a human intestinal epithelial cell line (Caco-2), which could be a route to uptake NPs into the body through the food chain. The average diameters of the OPPs decrease with increasing reaction temperature. The OPPs obtained at 175 °C (OPP175) were spherical in shape and had a rough surface, with size distributions of approximately 0.14 ± 0.02 μm. A significant increase in the carbonyl content of the oxidized product was confirmed by Fourier transform infrared and X-ray photoelectron spectroscopy analyses. Caco-2 cells were exposed to OPP175 in a dose-dependent manner, and a significant loss of cell viability occurred at the concentration of 100 μg/mL. Thus, this study provides a fundamental approach for the fabrication of a model of NPs for the urgently demanded in vitro and in vivo studies to assess the potential impact of NPs on biological systems.
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Affiliation(s)
- Suphatra Hiranphinyophat
- Graduate School of Engineering, Tohoku University, 6-6-2 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Tomoki Hiraoka
- Graduate School of Engineering, Tohoku University, 6-6-2 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Mako Kobayashi
- Graduate School of Engineering, Tohoku University, 6-6-2 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Sho Fujii
- Department of Natural Sciences, National Institute of Technology, Kisarazu College, 2-11-1 Kiyomidai Higashi, Kisarazu, Chiba 292-0041, Japan
| | - Akio Kishida
- Department of Material-based Medical Engineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Tadao Tanabe
- School of Engineering and Design, Shibaura Institute of Technology, 3-9-14 Shibaura, Minato-ku, Tokyo 101-0062, Japan
| | - Tsuyoshi Kimura
- Department of Material-based Medical Engineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Masaya Yamamoto
- Graduate School of Engineering, Tohoku University, 6-6-2 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
- Graduate School of Biomedical Engineering, Tohoku University, 6-6-2 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
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3
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Golmohammadi M, Salehabadi M, Janani H. Role of polymorphism in solid-state production of double-melting expanded polypropylene beads. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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4
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Lee WS, Kim H, Sim Y, Kang T, Jeong J. Fluorescent Polypropylene Nanoplastics for Studying Uptake, Biodistribution, and Excretion in Zebrafish Embryos. ACS OMEGA 2022; 7:2467-2473. [PMID: 35071934 PMCID: PMC8771955 DOI: 10.1021/acsomega.1c06779] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 12/23/2021] [Indexed: 05/17/2023]
Abstract
Nanoplastics (NPs) are emerging environmental pollutants and are a significant concern for human health. The small size of NPs allows them to accumulate within and adversely affect various tissues by penetrating the gastrointestinal barrier. However, most toxicity studies on NPs have been based on commercial polystyrene nanoparticles. Among plastics, polypropylene (PP) is one of the most widely used, and it is continuously micronized in the environment. Although PP has high potential for forming NPs by weathering, little is known about the biological effects of polypropylene nanoplastics (PPNPs) due to a lack of particle models. Here, we present a simple and high-yield method for PPNP production by nonsolvent-induced phase separation. The synthesized PPNPs were spherical in shape, with an average diameter of 562.15 ± 118.47 nm and a high yield of over 84%. These PPNPs were fluorescently labeled by the combined swelling-diffusion method to study their biodistribution after exposure to developing zebrafish embryos (ZFEs). We found that the fluorescent PPNPs were internalized by ingestion, distributed in the intestine of developing ZFEs, and eventually excreted. This study will aid evaluations of the potential risks of environmentally relevant plastics at the nanoscale.
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Affiliation(s)
- Wang Sik Lee
- Environmental
Disease Research Center, Korea Research
Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hyunjung Kim
- Environmental
Disease Research Center, Korea Research
Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yugyeong Sim
- Environmental
Disease Research Center, Korea Research
Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Department
of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic
of Korea
| | - Taejoon Kang
- Bionanotechnology
Research Center, Korea Research Institute
of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic
of Korea
| | - Jinyoung Jeong
- Environmental
Disease Research Center, Korea Research
Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Department
of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic
of Korea
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5
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Wu M, Wu F, Ren Q, Weng Z, Luo H, Wang L, Zheng W. Effect of crystalline structure on the cell morphology and mechanical properties of polypropylene foams fabricated by core‐back foam injection molding. J Appl Polym Sci 2021. [DOI: 10.1002/app.51370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Minghui Wu
- Ningbo key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- Advanced Materials and Composites Department University of Nottingham Ningbo China Ningbo China
| | - Fei Wu
- Ningbo key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing China
| | - Qian Ren
- Ningbo key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing China
| | - Zhengsheng Weng
- Ningbo key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
| | - Haibin Luo
- Ningbo key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
| | - Long Wang
- Ningbo key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing China
| | - Wenge Zheng
- Ningbo key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing China
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Pin JM, Tuccitto AV, Shivokhin ME, Lee PC. Linking ethylene co-monomer content and stereostructure to polycrystallinity and foam density of random copolymers of polypropylene. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123123] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Wu MH, Wang CC, Chen CY. Preparation of high melt strength polypropylene by addition of an ionically modified polypropylene. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122743] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Improved cell nucleating effect of partially melted crystal structure to enhance the microcellular foaming and impact properties of isotactic polypropylene. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.104794] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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A facile methodology to effectively improve the melt strength and microcellular foamability of isotactic polypropylene. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02101-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Han S, Jiang C, Yu K, Mi J, Chen S, Wang X. Influence of crystallization on microcellular foaming behavior of polyamide 6 in a supercritical CO
2
‐assisted route. J Appl Polym Sci 2020. [DOI: 10.1002/app.49183] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Shuo Han
- School of Materials and Mechanical EngineeringBeijing Technology and Business University Beijing People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing People's Republic of China
| | - Can Jiang
- School of Materials and Mechanical EngineeringBeijing Technology and Business University Beijing People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing People's Republic of China
| | - Kesong Yu
- School of Materials and Mechanical EngineeringBeijing Technology and Business University Beijing People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing People's Republic of China
| | - Jianguo Mi
- State Key Laboratory of Organic‐Inorganic CompositesBeijing University of Chemical Technology Beijing People's Republic of China
| | - Shihong Chen
- School of Materials and Mechanical EngineeringBeijing Technology and Business University Beijing People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing People's Republic of China
| | - Xiangdong Wang
- School of Materials and Mechanical EngineeringBeijing Technology and Business University Beijing People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing People's Republic of China
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11
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Jiang H, Yu K, Mi J, Zhou H, Chen S, Wang X. Effect of β‐nucleating agent and zeolite molecular sieves on supercritical CO
2
‐assisted cell and crystal nucleation during the long‐chain‐branched polypropylene foaming. J Appl Polym Sci 2019. [DOI: 10.1002/app.48183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hanchuan Jiang
- School of Materials and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 People's Republic of China
| | - Kesong Yu
- School of Materials and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 People's Republic of China
| | - Jianguo Mi
- State Key Laboratory of Organic‐Inorganic CompositesBeijing University of Chemical Technology Beijing 100029 People's Republic of China
| | - Hongfu Zhou
- School of Materials and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 People's Republic of China
| | - Shihong Chen
- School of Materials and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 People's Republic of China
| | - Xiangdong Wang
- School of Materials and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 People's Republic of China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 People's Republic of China
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12
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Wang P, Zhang J. A novel combination of sandwich and co-continuous structure based on polypropylene and styrene-butadiene-styrene block copolymer formed with wide range of polypropylene content. J Appl Polym Sci 2018. [DOI: 10.1002/app.46580] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ping Wang
- College of Materials Science and Engineering; Nanjing Tech University; Nanjing 210009 China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites; Nanjing 210009 China
| | - Jun Zhang
- College of Materials Science and Engineering; Nanjing Tech University; Nanjing 210009 China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites; Nanjing 210009 China
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