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Replacing Traditional Plastics with Biodegradable Plastics: Impact on Carbon Emissions

Guanyi Chen,Jianyuan Li,Yunan Sun,Zhi Wang,Gary A. Leeke,Christian Moretti,Zhanjun Cheng,Yuan Wang,Ning Li,Lan Mu,Jinyu Li,Junyu Tao,Beibei Yan,Li´an Hou

Engineering 2024, Volume 32, Issue 1,   Pages 153-162 doi: 10.1016/j.eng.2023.10.002

Abstract: , including the carbon emissions related to plastics, which has promoted the application of biodegradableplastics.Countries worldwide have shown high interest in replacing traditional plastics with biodegradable plasticsHowever, the high cost of biodegradable plastics is a challenge for their widespread use.plastics industry.

Keywords： Carbon emissions     Biodegradable plastics     Different disposal scenarios     Daily life consumption     Environmental    

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The road to sustainable use and waste management of plastics in Portugal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 1,   Pages 5-5 doi: 10.1007/s11783-021-1439-x

Abstract:

• Portugal recycles 34% of the 40 kg/hab year of plastic packaging waste.

Keywords： Single-use plastics     Plastic packaging     Plastic waste     Waste management     Waste shipment     Lightweight    

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Biodegradable, superhydrophobic walnut wood membrane for the separation of oil/water mixtures

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1377-1386 doi: 10.1007/s11705-022-2157-z

Abstract: The preparation of environmentally friendly oil/water separation materials remains a great challenge. Freeze-drying of wood after lignin removal yields wood aerogels, which can be used as substrates to prepare fluorine-free environmentally friendly superhydrophobic materials, However, they are more suitable for absorption rather than filtration applications due to their poor strength. A study using cross-sections of pristine wood chips as substrates retains the original strength of wood, but the use of the cross-sectional of wood pieces limits their thickness, strength, and size. In this paper, a degradable fluorine-free superhydrophobic film (max. water contact angle of approximately 164.2°) with self-cleaning and abrasion resistance characteristics was prepared by a one-step method using pristine and activated walnut longitudinal section films as the substrate, with tetraethyl orthosilicate as a precursor and dodecyltriethoxysilane as a modifier. The tensile strength results show that superhydrophobic films with pristine or activated wood substrates maintained the strength of pristine wood and were 2.2 times stronger than the wood aerogel substrate. In addition, after cross-laminating the two samples, the films had the ability to separate oil and water by continuous filtration with high efficiency (98.5%) and flux (approximately 1.3 × 103 L∙m‒2∙h‒1). The method has potential for the large-scale fabrication of degradable superhydrophobic filtration separation membranes.

Keywords： wood nanotechnology     superhydrophobic     biodegradable     surface modification     oil/water separation    

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Nano-copper ions assembled cellulose-based composite with antibacterial activity for biodegradable personal

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1544-1554 doi: 10.1007/s11705-022-2288-2

Abstract: The current SARS-CoV-2 pandemic has resulted in the widespread use of personal protective equipment, particularly face masks. However, the use of commercial disposable face masks puts great pressure on the environment. In this study, nano-copper ions assembled cotton fabric used in face masks to impart antibacterial activity has been discussed. To produce the nanocomposite, the cotton fabric was modified by sodium chloroacetate after its mercerization, and assembled with bactericidal nano-copper ions (about 10.61 mg·g–1) through electrostatic adsorption. It demonstrated excellent antibacterial activity against Staphylococcus aureus and Escherichia coli because the gaps between fibers in the cotton fabric allow the nano-copper ions to be fully released. Moreover, the antibacterial efficiency was maintained even after 50 washing cycles. Furthermore, the face mask constructed with this novel nanocomposite upper layer exhibited a high particle filtration efficiency (96.08% ± 0.91%) without compromising the air permeability (28.9 min·L–1). This green, economical, facile, and scalable process of depositing nano-copper ions onto modified cotton fibric has great potential to reduce disease transmission, resource consumption, and environmental impact of waste, while also expanding the range of protective fabrics.

Keywords： cellulose-based     nanocomposite     biodegradable antibacterial fabric     nano-copper ions     face masks    

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Microbial biodegradation of plastics: Challenges, opportunities, and a critical perspective

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1596-6

Abstract:

● Health hazards of plastic waste on environment are discussed.

Keywords： Plastic-waste     Polymers     Health-hazards     Biodegradation     Microorganisms     Enzymes    

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Thermal and catalytic pyrolysis of a synthetic mixture representative of packaging plastics residue

Simona Colantonio, Lorenzo Cafiero, Doina De Angelis, Nicolò M. Ippolito, Riccardo Tuffi, Stefano Vecchio Ciprioti

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 288-303 doi: 10.1007/s11705-019-1875-3

Abstract: A synthetic mixture of real waste packaging plastics representative of the residue from a material recovery

Keywords： packaging plastics waste     plasmix     pyrolysis     zeolite catalyst     degradation temperature    

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Prediction of cutting forces in machining of unidirectional glass fiber reinforced plastics composite

Surinder Kumar GILL, Meenu GUPTA, P. S. SATSANGI

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 187-200 doi: 10.1007/s11465-013-0262-x

Abstract: and tool geometry on the cutting forces in the turning of the unidirectional glass fiber reinforced plastics

Keywords： unidirectional glass fiber reinforced plastics (UD-GFRP) composites     machining     cutting forces (tangential    

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Co-pyrolysis of oil sludge with hydrogen-rich plastics in a vertical stirring reactor: Kinetic analysis

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1570-3

Abstract:

● Collaborative treatment of plastics and OS was established to improve

Keywords： Oily sludge     Pyrolysis     Polyethylene     H/Ceff ratio     Oil quality    

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Micronization of curcumin with biodegradable polymer by supercritical anti-solvent using micro swirl

Kimthet Chhouk, Wahyudiono, Hideki Kanda, Shin-Ichro Kawasaki, Motonobu Goto

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 184-193 doi: 10.1007/s11705-017-1678-3

Abstract: Curcumin is a hydrophobic polyphenol compound exhibiting a wide range of biological activities such as anti-inflammatory, anti-bacterial, anti-fungal, anti-carcinogenic, anti-human immunodeficiency virus, and anti-microbial activity. In this work, a swirl mixer was employed to produce the micronized curcumin with polyvinylpyrrolidone (PVP) by the supercritical anti-solvent process to improve the bioavailability of curcumin. The effects of operating parameters such as curcumin/PVP ratio, feed concentration, temperature, pressure, and CO flow rate were investigated. The characterization and solubility of particles were determined by using scanning electron microscopy, Fourier Transform Infrared spectroscopy, and ultra-violet-visible spectroscopy. The result shows that the optimal condition for the production of curcumin/PVP particles is at curcumin/PVP ratio of 1:30, feed concentration of 5 mg·mL , temperature of 40 °C, pressure of 15 MPa, and CO flow rate of 15 mL·min . Moreover, the dissolution of curcumin/PVP particles is faster than that of raw curcumin.

Keywords： micronization     curcumin     polyvinylpyrrolidone     supercritical anti-solvent     swirl mixer    

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The latest progress in research of plastics processing technology

Qu Jinping

Strategic Study of CAE 2011, Volume 13, Issue 10,   Pages 58-68

Abstract:

According to the great demand for the "green" plastics processingtechnology of the low energy consumption, high efficiency and environmental protection in plastics industry, the plastics processing method and technology based on the elongation rheology, with continuing evolutionand innovation of the plastics plasticating and conveying method, are presented and researched on thebasis of the plastics dynamic processing method and equipment, and it is focused on that the plastics

Keywords： plastics     processing     elongation deformation     plasticating and conveying    

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Biodegradable Materials and the Tissue Engineering of Nerves

Xiaosong Gu

Engineering 2021, Volume 7, Issue 12,   Pages 1700-1703 doi: 10.1016/j.eng.2021.10.011

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Synthesis and characterization of biodegradable thermoplastic elastomers derived from N′,N-bis (2-carboxyethyl

Jiaojiao Shang, Guo Yao, Ronghui Guo, Wei Zheng, Long Gu, Jianwu Lan

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 457-466 doi: 10.1007/s11705-018-1716-9

Abstract:

Biodegradable poly(ether-imide-ester) elastomers were synthesized from succinic acid, 1,4-butanediol

Keywords： thermoplastic elastomers     biodegradability     thermo-stability     mechanical property     aromatic bisimide moiety    

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New progress in study of the technology of strengthening structures with prestressed fiber reinforced plastics

Lu Yiyan,Chen Juan,Huang Yinshen,Wu Tao

Strategic Study of CAE 2008, Volume 10, Issue 8,   Pages 40-44

Abstract:

The application of fiber reinforced plastics (FRP) in strengthening projects

Keywords： fiber reinforced plastics     strengthening technology     concrete structures     steel structures     research    

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Degradable Plastics Are Vulnerable to Cracks Letter

Xuxu Yang, Jason Steck, Jiawei Yang, Yecheng Wang, Zhigang Suo

Engineering 2021, Volume 7, Issue 5,   Pages 624-629 doi: 10.1016/j.eng.2021.02.009

Abstract: These findings will aid the development of degradable plastics for healthcare and sustainability.

Keywords： Degradation     Plastics     Hydrolysis     pH     Cracking    

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Pyrolysis of WEEE plastics using catalysts produced from fly ash of coal gasification

Marika Benedetti, Lorenzo Cafiero, Doina De Angelis, Alessandro Dell’Era, Mauro Pasquali, Stefano Stendardo, Riccardo Tuffi, Stefano Vecchio Ciprioti

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0998-3

Abstract: Catalytic pyrolysis of thermoplastics extracted from waste electrical and electronic equipment (WEEE) was investigated using various fly ash-derived catalysts. The catalysts were prepared from fly ash by a simple method that basically includes a mechanical treatment followed by an acid or a basic activation. The synthesized catalysts were characterized using various analytical techniques. The results showed that not treated fly ash (FA) is characterized by good crystallinity, which in turn is lowered by mechanical and chemical treatment (fly ash after mechanical and acid activation, FAMA) and suppressed almost entirely down to let fly ash become completely amorphous (fly ash after mechanical and basic activation FAMB). Simultaneously, the surface area resulted increased. Subsequently, FA, FAMB and FAMA were used in the pyrolysis of a WEEE plastic sample at 400°C and their performance were compared with thermal pyrolysis at the same temperature. The catalysts principally improve the light oil yield: from 59wt.% with thermal pyrolysis to 83 wt.% using FAMB. The formation of styrene in the oil is also increased: from 243 mg/g with thermal pyrolysis to 453 mg/g using FAMB. As a result, FAMB proved to be the best catalyst, thus producing also the lowest and the highest amount of char and gas, respectively.

Keywords： Waste electrical and electronic equipment (WEEE) plastic mixture     Pyrolysis     Catalyst     Fly ash     Oil    

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Title Author Date Type Operation

Replacing Traditional Plastics with Biodegradable Plastics: Impact on Carbon Emissions

Guanyi Chen,Jianyuan Li,Yunan Sun,Zhi Wang,Gary A. Leeke,Christian Moretti,Zhanjun Cheng,Yuan Wang,Ning Li,Lan Mu,Jinyu Li,Junyu Tao,Beibei Yan,Li´an Hou

Journal Article

The road to sustainable use and waste management of plastics in Portugal

Journal Article

Biodegradable, superhydrophobic walnut wood membrane for the separation of oil/water mixtures

Journal Article

Nano-copper ions assembled cellulose-based composite with antibacterial activity for biodegradable personal

Journal Article

Microbial biodegradation of plastics: Challenges, opportunities, and a critical perspective

Journal Article

Thermal and catalytic pyrolysis of a synthetic mixture representative of packaging plastics residue

Simona Colantonio, Lorenzo Cafiero, Doina De Angelis, Nicolò M. Ippolito, Riccardo Tuffi, Stefano Vecchio Ciprioti

Journal Article

Prediction of cutting forces in machining of unidirectional glass fiber reinforced plastics composite

Surinder Kumar GILL, Meenu GUPTA, P. S. SATSANGI

Journal Article

Co-pyrolysis of oil sludge with hydrogen-rich plastics in a vertical stirring reactor: Kinetic analysis

Journal Article

Micronization of curcumin with biodegradable polymer by supercritical anti-solvent using micro swirl

Kimthet Chhouk, Wahyudiono, Hideki Kanda, Shin-Ichro Kawasaki, Motonobu Goto

Journal Article

The latest progress in research of plastics processing technology

Qu Jinping

Journal Article

Biodegradable Materials and the Tissue Engineering of Nerves

Xiaosong Gu

Journal Article

Synthesis and characterization of biodegradable thermoplastic elastomers derived from N′,N-bis (2-carboxyethyl

Jiaojiao Shang, Guo Yao, Ronghui Guo, Wei Zheng, Long Gu, Jianwu Lan

Journal Article

New progress in study of the technology of strengthening structures with prestressed fiber reinforced plastics

Lu Yiyan,Chen Juan,Huang Yinshen,Wu Tao

Journal Article

Degradable Plastics Are Vulnerable to Cracks

Xuxu Yang, Jason Steck, Jiawei Yang, Yecheng Wang, Zhigang Suo

Journal Article

Pyrolysis of WEEE plastics using catalysts produced from fly ash of coal gasification

Marika Benedetti, Lorenzo Cafiero, Doina De Angelis, Alessandro Dell’Era, Mauro Pasquali, Stefano Stendardo, Riccardo Tuffi, Stefano Vecchio Ciprioti

Journal Article