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Gündoğdu S, Bour A, Köşker AR, Walther BA, Napierska D, Mihai FC, Syberg K, Hansen SF, Walker TR. Review of microplastics and chemical risk posed by plastic packaging on the marine environment to inform the Global Plastics Treaty. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174000. [PMID: 38901589 DOI: 10.1016/j.scitotenv.2024.174000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/04/2024] [Accepted: 06/12/2024] [Indexed: 06/22/2024]
Abstract
Plastic overproduction and the resulting increase in consumption has made plastic pollution ubiquitous in all ecosystems. Recognizing this, the United Nations (UN) has started negotiations to establish a global treaty to end plastic pollution, especially in the marine environment. The basis of the treaty has been formulated in terms of turning off the tap, signaling the will to prevent plastic pollution at its source. Based on the distribution of plastic production by sector, the plastic packaging sector consumes the most plastic. The volume and variety of chemicals used in plastic packaging, most of which is single-use, is a major concern. Single-use plastics including packaging is one of the most dominant sources of plastic pollution. Plastic waste causes pollution in water, air and soil by releasing harmful chemicals into the environment and can also lead to exposure through contamination of food with micro- and nano-plastic particles and chemicals through packaging. Marine life and humans alike face risks from plastic uptake through bioaccumulation and biomagnification. While the contribution of plastics ingested to chemical pollution is relatively minor in comparison to other pathways of exposure, the effect of plastic waste on marine life and human consumption of seafood is beyond question. To reduce the long-term impact of plastic, it is crucial to establish a global legally binding instrument to ensure the implementation of upstream rather than downstream solutions. This will help to mitigate the impact of both chemicals and microplastics, including from packaging, on the environment.
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Affiliation(s)
- Sedat Gündoğdu
- Cukurova University Faculty of Fisheries Department of Basic Science, 01330 Adana, Türkiye.
| | - Agathe Bour
- Dept. of Science and Environment, Roskilde University, 4000 Roskilde, Denmark
| | - Ali Rıza Köşker
- Cukurova University Faculty of Fisheries Department of Seafood Processing, 01330 Adana, Türkiye
| | - Bruno Andreas Walther
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, D-27570 Bremerhaven, Germany
| | | | - Florin-Constantin Mihai
- CERNESIM Center, Department of Exact Sciences and Natural Sciences, Institute of Interdisciplinary Research "Alexandru Ioan Cuza" University, Carol I Blvd 11, 700506 Iași, Romania
| | - Kristian Syberg
- Dept. of Science and Environment, Roskilde University, 4000 Roskilde, Denmark
| | - Steffen Foss Hansen
- Department of Environmental and Resource Engineering, Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kongens Lyngby, Denmark
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, NS B3H 4R2, Canada
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2
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Santomasi G, Aquilino R, Brouwer M, De Gisi S, Smeding I, Todaro F, Notarnicola M, Thoden van Velzen EU. Strategies to enhance the circularity of non-bottle PET packaging waste based on a detailed material characterisation. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 186:293-306. [PMID: 38954921 DOI: 10.1016/j.wasman.2024.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 04/30/2024] [Accepted: 06/19/2024] [Indexed: 07/04/2024]
Abstract
The compositions of Dutch lightweight packaging waste (LWP) and sorted products named "PET (Polyethylene terephthalate) trays" have been determined on object level. Additionally, the PET trays from both waste types were sorted in 16 categories representing their packaging use and material build-up. The material composition of at least 10 representative trays from each category was determined with chemical and thermal analysis, based on which the average material composition per category was established. Based on this data the average material composition of sorted PET tray products was approximated. The recyclability of the various categories of PET trays was assessed based on their material build-up. The most ubiquitous PET trays in Dutch LWP and sorted products were only found to be suitable to produce opaque recycled PET with mechanical recycling processes. Whereas only some more uncommon PET trays can be used to produce transparent recycled PET with mechanical recycling processes. Depolymerisation is deemed to be a more appropriate recycling process that will allow the production of transparent food-grade recycled PET.
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Affiliation(s)
- Giusy Santomasi
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Via E. Orabona n.4, I-70125 Bari, Italy.
| | - Rosiana Aquilino
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Via E. Orabona n.4, I-70125 Bari, Italy
| | - Marieke Brouwer
- Wageningen Food & Biobased Research, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Sabino De Gisi
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Via E. Orabona n.4, I-70125 Bari, Italy
| | - Ingeborg Smeding
- Wageningen Food & Biobased Research, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Francesco Todaro
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Via E. Orabona n.4, I-70125 Bari, Italy
| | - Michele Notarnicola
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Via E. Orabona n.4, I-70125 Bari, Italy
| | - Eggo U Thoden van Velzen
- Wageningen Food & Biobased Research, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
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3
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Gritsch L, Breslmayer G, Rainer R, Stipanovic H, Tischberger-Aldrian A, Lederer J. Critical properties of plastic packaging waste for recycling: A case study on non-beverage plastic bottles in an urban MSW system in Austria. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 185:10-24. [PMID: 38815530 DOI: 10.1016/j.wasman.2024.05.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 05/02/2024] [Accepted: 05/22/2024] [Indexed: 06/01/2024]
Abstract
The low recycling rate of post-consumer plastic packaging waste (PPW), which is partly due to insufficient separate collection, heterogeneous composition and high levels of contamination, poses a challenge in Austria, where the recycling rate must double in order to meet the target of 55 %. This study analyzes key packaging characteristics of non-beverage plastic bottles influencing recyclability, using Vienna as a case study. Additionally, a net quantity indicator and separate collection rates were calculated. 738 bottles from mixed MSW and 1,159 bottles from separate PPW collection were analyzed. The main polymer's proportion described by the net quantity indicator was higher for bottles from separate collection (69-72 %) than from mixed MSW (58 %), showing that a large share of the foreign materials are residues and dirt, with significantly higher contents in mixed MSW (20 %) than in separate collection (11 %). With a separate collection rate of 19.2 %, the great potential for recycling currently lies in mixed MSW at 4,112 t/yr. Thereof, 46 % is uncolored, 54 % is colored/white and, in terms of material grade, 30 % is food grade. The most common filling volume for PET, PP and HDPE was 0.5 < x ≤ 1.5 L (23-59 %) and the most common decoration technology was label (60-85 %). PET and PP had the highest shares of food-grade bottles (37-46 %), while PP had the highest share of colored bottles (22-31 %). The mechanical recycling potential of bottles depends largely on packaging characteristics, influencing separate collection and also automatic sorting. Harmonized design specifications are therefore crucial for this heterogeneous PPW fraction.
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Affiliation(s)
- Lea Gritsch
- Christian Doppler Laboratory for a Recycling-based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Austria.
| | - Gisela Breslmayer
- Christian Doppler Laboratory for a Recycling-based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Austria
| | - Ricarda Rainer
- Christian Doppler Laboratory for a Recycling-based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Austria
| | - Hana Stipanovic
- Chair of Waste Processing Technology and Waste Management, Montanuniversitaet Leoben, Austria
| | | | - Jakob Lederer
- Christian Doppler Laboratory for a Recycling-based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Austria
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4
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Madden B, Florin N. Characterisation of household single-use packaging flows through a municipal waste system: A material flow analysis for New South Wales, Australia. Heliyon 2024; 10:e32878. [PMID: 38975073 PMCID: PMC11226917 DOI: 10.1016/j.heliyon.2024.e32878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/30/2024] [Accepted: 06/11/2024] [Indexed: 07/09/2024] Open
Abstract
Household single-use packaging has poor rates of recycling, and presents a challenge in transitioning to a circular packaging economy. This study characterises the flows of household single-use packaging in the municipal waste system for 2020-21 in New South Wales, Australia. Households are an important source of packaging usage in Australia, accounting for over 40 % of all packaging used in 2020-21. Our focus spans 17 single-use packaging materials and 11 formats. We estimate the composition of single-use consumer packaging in the kerbside collection stream, and the ultimate fate of used packaging. Results show 1000 ± 8 % kt of packaging was used by households in NSW in 2020-21 (∼123 kg/cap). Composition of the used packaging stream was dominated by glass (36 %), paper (29 %) and plastic (28 %) packaging. HDPE (26 % of plastic packaging), LDPE (24 %) and PET (19 %) were the main polymers in use. 63 % ± 5 % of used packaging was collected for recycling, and 34 % ± 7 % was recovered via recyclate generation and overseas exports. Glass packaging had the highest recycling rates at 52 % ± 3 %, while plastic packaging had the poorest at 11 % ± 10 %. Findings indicate incorrect disposal of recyclables at the household to mixed-waste systems as a major limitation of the system to improve recycling rates. Expansion in recovery capacity is also essential for improving recycling rates, and the potential for generating the packaging-grade recyclate essential for meeting recycled content targets. The study offers contributions to the understanding of consumer packaging managed within the municipal waste system. Insights gained have application in informing sustainable packaging and waste management strategies.
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Affiliation(s)
- Ben Madden
- Institute for Sustainable Futures, University of Technology Sydney, Ultimo, New South Wales, 2007, Australia
| | - Nick Florin
- Institute for Sustainable Futures, University of Technology Sydney, Ultimo, New South Wales, 2007, Australia
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5
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Rossi D, Lermen FH, Echeveste MES. Hierarchical analysis of barriers to circular business models in the recycling industry. ENVIRONMENTAL TECHNOLOGY 2024:1-16. [PMID: 38861475 DOI: 10.1080/09593330.2024.2364308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 05/27/2024] [Indexed: 06/13/2024]
Abstract
Circular business models in manufacturing, especially in the recycling industry, face many barriers that need to be managed and mitigated for successful business implementation. Therefore, this study aims to analyse the hierarchy of the main barriers to the implementation of circular business models in the recycling industry and evaluate strategies to overcome them. To achieve this goal, we first conducted a systematic literature review on barriers to implementing circular business models. Second, barriers were prioritized through a survey followed by an expert focus group. Building on these steps, we used interpretive structural modeling combined with a 'matrix of cross-impact multiplications applied to classification' to identify the hierarchy among barriers and describe their interdependencies. As key findings, 10 barriers were prioritized through a survey to identify the most important barriers for the recycling industry. The hierarchy of these barriers highlights regulation and government incentives as the most important, followed by those related to supply chain collaboration and lack of material flow indicators. Finally, internal barriers appear as high investments and associated risks. Finally, we suggest strategies to overcome these barriers based on their hierarchy. The implications of this study provide a proposal of strategies for implementing circular business models in the recycling industry, derived from the hierarchical correlation among the barriers, and can be applied in different regions through expert opinion assessment.
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Affiliation(s)
- Daiane Rossi
- Graduate Program of Industrial Engineering, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Fernando Henrique Lermen
- Industrial Engineering Department, State University of Paraná, Paranaguá, Brazil
- Industrial Engineering Department, Universidad Tecnológica del Perú, Lima, Peru
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6
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Shoukat B, Hussain H, Naz MY, Ibrahim AA, Shukrullah S, Khan Y, Zhang Y. Microwave-Assisted Catalytic Deconstruction of Plastics Waste into Nanostructured Carbon and Hydrogen Fuel Using Composite Magnetic Ferrite Catalysts. SCIENTIFICA 2024; 2024:3318047. [PMID: 38855033 PMCID: PMC11161267 DOI: 10.1155/2024/3318047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 04/17/2024] [Accepted: 05/11/2024] [Indexed: 06/11/2024]
Abstract
Finding new catalysts and pyrolysis technologies for efficiently recycling wasted plastics into fuels and structured solid materials of high selectivity is the need of time. Catalytic pyrolysis is a thermochemical process that cracks the feedstock in an inert gas environment into gaseous and liquid fuels and a residue. This study is conducted on microwave-assisted catalytic recycling of wasted plastics into nanostructured carbon and hydrogen fuel using composite magnetic ferrite catalysts. The composite ferrite catalysts, namely, NiZnFe2O4, NiMgFe2O4, and MgZnFe2O4 were produced through the coprecipitation method and characterized for onward use in the microwave-assisted valorization of wasted plastics. The ferrite nanoparticles worked as a catalyst and heat susceptor for uniformly distributed energy transfer from microwaves to the feedstock at a moderate temperature of 450°C. The type of catalyst and the working parameters significantly impacted the process efficiency, gas yield, and structural properties of the carbonaceous residue. The tested process took 2-8 minutes to pulverize feedstock into gas and carbon nanotubes (CNTs), depending on the catalyst type. The NiZnFe2O4-catalyzed process produced CNTs with good structural properties and fewer impurities compared to other catalysts. The NiMgFe2O4 catalyst performed better in terms of hydrogen evolution by showing 87.5% hydrogen (H2) composition in the evolved gases. Almost 90% of extractable hydrogen from the feedstock evolved during the first 2 minutes of the reaction.
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Affiliation(s)
- Bilal Shoukat
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Hammad Hussain
- Department of Agricultural Engineering, Faculty of Agricultural Engineering & Technology, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Muhammad Yasin Naz
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Ahmed Ahmed Ibrahim
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, 11451 Riyadh, Saudi Arabia
| | - Shazia Shukrullah
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Yasin Khan
- Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia
| | - Yaning Zhang
- School of Energy Science and Engineering, Harbin Institute of Technology (HIT), Harbin 150001, China
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7
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Blasenbauer D, Lipp AM, Fellner J, Tischberger-Aldrian A, Stipanović H, Lederer J. Recovery of plastic packaging from mixed municipal solid waste. A case study from Austria. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 180:9-22. [PMID: 38503033 DOI: 10.1016/j.wasman.2024.02.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/06/2024] [Accepted: 02/22/2024] [Indexed: 03/21/2024]
Abstract
Austria must recycle more packaging materials. Especially for plastic packaging waste, significant increases are necessary to reach the EU recycling targets for 2025 and 2030. In addition to improving separate collection and introducing a deposit system for specific fractions, the share of plastic packaging in mixed municipal solid waste (MSW) could be utilized. In Austria, about 1.8milliontonnes of mixed MSW are generated. This includes about 110,000 t/a of plastic packaging waste. Most of the mixed MSW (94 %) is sent directly or via residues from pre-treatment, such as mechanical-biological treatment or waste sorting, to waste incineration. While materials such as glass and metals can also be recovered from the bottom ash, combustible materials such as plastics must be recovered before incineration. This work aims to evaluate the recovery potential of plastic packaging waste in mixed MSW with automated waste sorting. For this purpose, two of the largest Austrian waste sorting plants, with a total annual throughput of about 280,000 t/a, were investigated. The investigation included regular sampling of selected output streams and sorting analysis. The results show that the theoretical recovery potential of plastic packaging from these two plants is 6,500 t/a on average. An extrapolation to Austria results in a potential of about 83,000 t/a. If losses due to further treatment, such as sorting and recycling, are considered, about 30,000 t/a of recyclate could be returned to plastic production. This would correspond to an increase in plastic packaging recycling rate from 25 % to 35 %.
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Affiliation(s)
- Dominik Blasenbauer
- Christian Doppler Laboratory for a Recycling-based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering (ICEBE), TU Wien, Getreidemarkt 9/166, 1060 Vienna, Austria.
| | - Anna-Maria Lipp
- Christian Doppler Laboratory for a Recycling-based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering (ICEBE), TU Wien, Getreidemarkt 9/166, 1060 Vienna, Austria
| | - Johann Fellner
- Institute for Water Quality and Resource Management, TU Wien, Karlsplatz 13/226, 1040 Vienna, Austria
| | - Alexia Tischberger-Aldrian
- Waste Processing Technology and Waste Management, Department of Environmental and Energy Process Engineering, Montanuniversitaet Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria
| | - Hana Stipanović
- Waste Processing Technology and Waste Management, Department of Environmental and Energy Process Engineering, Montanuniversitaet Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria
| | - Jakob Lederer
- Christian Doppler Laboratory for a Recycling-based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering (ICEBE), TU Wien, Getreidemarkt 9/166, 1060 Vienna, Austria
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8
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Debele AD, Demeke S, Bekele T, Malimo M. Recycling and reusing potential of disposable low-density polyethylene plastic waste for flexible paver tile construction for outdoor application. Heliyon 2024; 10:e29381. [PMID: 38638943 PMCID: PMC11024625 DOI: 10.1016/j.heliyon.2024.e29381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 04/06/2024] [Accepted: 04/07/2024] [Indexed: 04/20/2024] Open
Abstract
Plastic waste disposal has escalated into a serious global concern due to the non-biodegradable nature of plastics, which are composed of high-molecular-mass organic polymers along with other ingredients. Therefore, this study focuses on reusing and recycling LDPE plastic waste as a binding agent in paver tile production. This aligns with global sustainability goals by promoting resource efficiency and reducing waste generation. The investigation aims to address the environmental impact of plastic waste by finding sustainable solutions for its management. This includes exploring the feasibility and viability of using LDPE plastic waste in paver tile production as a means of recycling and reusing locally collected waste. The LDPE waste plastic collection, identification, milling, and melting at 170 °C. Subsequently, the sampled sand, sieved to a size of ≤0.75 mm, was blended with molten plastic in a specified proportion and then molded to create paving tiles using a hydraulic press machine. The researchers utilized response surface methodology (RSM) combined with Box-Benken designs (BBD) to optimize three key experimental parameters (plastic-to-sand ratio: 10 %, 25 %, 40 %; time: 2, 5, 8 min, pressure: 1, 3, 5 MPa) influencing mechanical properties of paver tiles, including water absorption (WA), flexural strength (FS), and compressive strength (CS). The result revealed that the optimal combination of 25 % waste plastic, 5 min, and 3 MPa of pressure resulted in a maximum flexural strength (FS) of 3.689 MPa and compressive strength (CS) of 4.141 MPa, with an average water absorption (WA) of 0.322 %. Therefore, the mechanical properties of the developed tiles met the desired standard. In conclusion, the mechanical qualities of the tiles were promising, indicating that reusing waste LDPE plastic to create paver tiles presents an appealing option for plastic waste disposal. The composite paver tiles exhibited promising attributes for outdoor applications, such as park pavement and outdoor public spaces, owing to their favorable mechanical properties and low water absorption.
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Affiliation(s)
- Abu Duguma Debele
- Energy and Environment Research Centre, Dilla University, Dilla, Ethiopia
| | | | - Tadele Bekele
- Department of Chemical Engineering, Mattu University, Mattu, Ethiopia
| | - Markos Malimo
- College of Education and Behavioral Science, Dilla University, Dilla, Ethiopia
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9
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Stallkamp C, Hennig M, Volk R, Stapf D, Schultmann F. Pyrolysis of mixed engineering plastics: Economic challenges for automotive plastic waste. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 176:105-116. [PMID: 38277808 DOI: 10.1016/j.wasman.2024.01.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/31/2023] [Accepted: 01/18/2024] [Indexed: 01/28/2024]
Abstract
Chemical recycling of complex plastic waste via pyrolysis can reduce fossil resource dependence of the plastics value chain and greenhouse gas emissions. However, economic viability is crucial for its implementation, especially considering challenging waste streams with high shares of engineering plastics that have lower pyrolysis product quality than standard thermoplastics waste. Thus, this study conducts a techno-economic assessment determining the profitability factors of pyrolysis plants for automotive plastic waste in Germany including different plant capacities and calculating cost-covering minimum sales prices for the resulting pyrolysis oil. Main findings are that due to economies of scale, the cost-covering minimum sales prices vary between 1182 €/Mg pyrolysis oil (3750 Mg input/year) and 418 €/Mg pyrolysis oil (100,000 Mg input/year). The pyrolysis technology employed must be robust and scalable to realize these economies of scale. Large plant capacities face challenges such as feedstock availability at reasonable costs, constant feedstock quality, and pyrolysis oil quality, affecting pyrolysis oil pricing. Due to the limited yield and quality of pyrolysis oil produced from these technically demanding feedstocks, policy implications are that additional revenue streams such as gate fees or subsidies that are essential to ensure a positive business case are necessary. Depending on the assessed plant capacity, additional revenues between 720 and 59 €/Mg pyrolysis oil should be realized to be competitive with the price of the reference product heavy fuel oil. Otherwise, the environmental potential of this technology cannot be exploited.
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Affiliation(s)
- Christoph Stallkamp
- Karlsruhe Institute of Technology (KIT), Institute for Industrial Production (IIP), Karlsruhe, Germany.
| | - Malte Hennig
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry (ITC), Karlsruhe, Germany
| | - Rebekka Volk
- Karlsruhe Institute of Technology (KIT), Institute for Industrial Production (IIP), Karlsruhe, Germany
| | - Dieter Stapf
- Karlsruhe Institute of Technology (KIT), Institute for Technical Chemistry (ITC), Karlsruhe, Germany
| | - Frank Schultmann
- Karlsruhe Institute of Technology (KIT), Institute for Industrial Production (IIP), Karlsruhe, Germany
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10
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Clark R, Shaver MP. Depolymerization within a Circular Plastics System. Chem Rev 2024; 124:2617-2650. [PMID: 38386877 PMCID: PMC10941197 DOI: 10.1021/acs.chemrev.3c00739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/18/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024]
Abstract
The societal importance of plastics contrasts with the carelessness with which they are disposed. Their superlative properties lead to economic and environmental efficiency, but the linearity of plastics puts the climate, human health, and global ecosystems at risk. Recycling is fundamental to transitioning this linear model into a more sustainable, circular economy. Among recycling technologies, chemical depolymerization offers a route to virgin quality recycled plastics, especially when valorizing complex waste streams poorly served by mechanical methods. However, chemical depolymerization exists in a complex and interlinked system of end-of-life fates, with the complementarity of each approach key to environmental, economic, and societal sustainability. This review explores the recent progress made into the depolymerization of five commercial polymers: poly(ethylene terephthalate), polycarbonates, polyamides, aliphatic polyesters, and polyurethanes. Attention is paid not only to the catalytic technologies used to enhance depolymerization efficiencies but also to the interrelationship with other recycling technologies and to the systemic constraints imposed by a global economy. Novel polymers, designed for chemical depolymerization, are also concisely reviewed in terms of their underlying chemistry and potential for integration with current plastic systems.
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Affiliation(s)
- Robbie
A. Clark
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, United
Kingdom
- Sustainable
Materials Innovation Hub, Henry Royce Institute, University of Manchester, Manchester M13 9PL, United
Kingdom
| | - Michael P. Shaver
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, United
Kingdom
- Sustainable
Materials Innovation Hub, Henry Royce Institute, University of Manchester, Manchester M13 9PL, United
Kingdom
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11
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Garwacki M, Cudnik I, Dziadowiec D, Szymczak P, Andrzejewski J. The Development of Sustainable Polyethylene Terephthalate Glycol-Based (PETG) Blends for Additive Manufacturing Processing-The Use of Multilayered Foil Waste as the Blend Component. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1083. [PMID: 38473555 DOI: 10.3390/ma17051083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/14/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024]
Abstract
The polymer foil industry is one of the leading producers of plastic waste. The development of new recycling methods for packaging products is one of the biggest demands in today's engineering. The subject of this research was the melt processing of multilayered PET-based foil waste with PETG copolymer. The resulting blends were intended for additive manufacturing processing using the fused deposition modeling (FDM) method. In order to improve the properties of the developed materials, the blends compounding procedure was conducted with the addition of a reactive chain extender (CE) and elastomeric copolymer used as an impact modifier (IM). The samples were manufactured using the 3D printing technique and, for comparison, using the traditional injection molding method. The obtained samples were subjected to a detailed characterization procedure, including mechanical performance evaluation, thermal analysis, and rheological measurements. This research confirms that PET-based film waste can be successfully used for the production of filament, and for most samples, the FDM printing process can be conducted without any difficulties. Unfortunately, the unmodified blends are characterized by brittleness, which makes it necessary to use an elastomer additive (IM). The presence of a semicrystalline PET phase improves the thermal resistance of the prepared blends; however, an annealing procedure is required for this purpose.
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Affiliation(s)
- Mikołaj Garwacki
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3 Str, 60-965 Poznan, Poland
| | - Igor Cudnik
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3 Str, 60-965 Poznan, Poland
| | - Damian Dziadowiec
- Institute of Materials Technology, Faculty of Mechanical Engineering, Poznan University of Technology, Piotrowo 3 Str, 61-138 Poznan, Poland
- Eurocast Sp. z o.o., Wejherowska 9 Str, 84-220 Strzebielino, Poland
| | - Piotr Szymczak
- Institute of Materials Technology, Faculty of Mechanical Engineering, Poznan University of Technology, Piotrowo 3 Str, 61-138 Poznan, Poland
- Eurocast Sp. z o.o., Wejherowska 9 Str, 84-220 Strzebielino, Poland
| | - Jacek Andrzejewski
- Institute of Materials Technology, Faculty of Mechanical Engineering, Poznan University of Technology, Piotrowo 3 Str, 61-138 Poznan, Poland
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12
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Albizzati PF, Foster G, Gaudillat P, Manfredi S, Tonini D. A model to assess the environmental and economic impacts of municipal waste management in Europe. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 174:605-617. [PMID: 38147702 DOI: 10.1016/j.wasman.2023.12.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/28/2023]
Abstract
The Monitoring Framework proposed in the EU27 New Circular Economy Action Plan comprises two mass-based indicators, namely overall recycling rate and recycling rate for specific waste streams. Yet, to monitor and assess the impacts of circular economy, indicators cannot be limited to mass-based indicators; we argue assessments should also include environmental and economic effects. Towards this end, these impacts can be quantified by an advanced model based on life cycle thinking, entailing the use of life cycle assessment and costing (LCA/LCC). Calculating these effects for municipal waste management is challenging due to gaps in available data for estimating generated waste. We propose a methodology to estimate more finely the amounts of waste generated in the Member States, complemented with LCA/LCC. The results highlight that important inconsistencies in municipal waste data reporting exist and that recycling rates calculated from these are lower than hitherto estimated. The impacts quantification shows great performance variation across EU27, with C-footprint ranging from -490 to 539 kg CO2-eq. t-1. Potentials for improvement are substantial and can bring up to 103 Mt CO2-eq. additional annual saving, reducing costs (calculated as Full Environmental LCC) of waste management by 8.4 billion EUR and bringing 206,100 new jobs in the sector. The approach presented highlights the rationale for improved data management on waste statistics and the potential for harmonised models. It also paves the way for more sophisticated impact analyses relevant for policymaking, by bringing a richer perspective to the environmental and economic impacts of waste management on top of tracking generated, collected and recycled waste flows.
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Affiliation(s)
- P F Albizzati
- European Commission, Joint Research Centre, Directorate S: Scientific Development Programmes Unit, Edificio Expo, Calle Inca Garcilaso 3, 41092 Seville, Spain.
| | - G Foster
- European Commission, Joint Research Centre, Directorate B: Circular Economy and Sustainable Industry Unit, Edificio Expo, Calle Inca Garcilaso 3, 41092 Seville, Spain
| | - P Gaudillat
- European Commission, Joint Research Centre, Directorate B: Circular Economy and Sustainable Industry Unit, Edificio Expo, Calle Inca Garcilaso 3, 41092 Seville, Spain
| | - S Manfredi
- European Commission, Joint Research Centre, Directorate D: Land Resources and Supply Chain Assessments Unit, Via E. Fermi 2749, 21027 Ispra (VA), Italy
| | - D Tonini
- European Commission, Joint Research Centre, Directorate B: Circular Economy and Sustainable Industry Unit, Edificio Expo, Calle Inca Garcilaso 3, 41092 Seville, Spain
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13
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Martinho G, Santos P, Alves A, Ramos M. Indicators and characteristics of PET packaging collected in a Deposit and Refund System pilot project. Heliyon 2024; 10:e25182. [PMID: 38356606 PMCID: PMC10864888 DOI: 10.1016/j.heliyon.2024.e25182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 01/08/2024] [Accepted: 01/22/2024] [Indexed: 02/16/2024] Open
Abstract
Countries that have a Deposit and Refund System (DRS) show high rates of selective beverage packaging waste collection, indicating that it is a powerful economic instrument for achieving the European packaging recycling targets. DRS ensure that collected material is of a sufficiently high quality to be incorporated into new products. In Portugal, the Government has decided to implement a DRS for non-reusable beverage packaging as a strategy to increase the packaging recycling rate, which is currently considerably lower than the mandatory European targets. To acquire knowledge and experience for the design and implementation of the future DRS, a pilot project was carried out with polyethylene terephthalate (PET) beverage packaging, using 23 Reverse Vending Machines (RVM) installed at supermarkets across mainland Portugal. The authors monitored the DRS pilot project between March 2020 and December 2022. The main objectives were to determine operational indicators and evaluate the characteristics and quality of the PET deposited, using both the data recorded by the RVM and a characterisation of the packages contained in a sample of 46 bags. The results provided important data for planning the Portuguese strategy, which may also support operational or political decisions in countries in similar contexts. Whilst the recycling plants that received the material collected in these RVM confirmed that its quality allows for the production of PET food-grade flakes, this research identified a need to improve the design of packaging and to communicate this with producers, to better allow for the incorporation of recycled material into food beverage packaging.
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Affiliation(s)
- Graça Martinho
- MARE – Marine and Environmental Sciences Centre / Associate Laboratory ARNET – Aquatic Research Network, Portugal
- Department of Environmental Sciences and Engineering, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Pedro Santos
- MARE – Marine and Environmental Sciences Centre / Associate Laboratory ARNET – Aquatic Research Network, Portugal
- Department of Environmental Sciences and Engineering, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Ana Alves
- MARE – Marine and Environmental Sciences Centre / Associate Laboratory ARNET – Aquatic Research Network, Portugal
- Department of Environmental Sciences and Engineering, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Mário Ramos
- MARE – Marine and Environmental Sciences Centre / Associate Laboratory ARNET – Aquatic Research Network, Portugal
- Department of Environmental Sciences and Engineering, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
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14
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Fan YV, Čuček L, Si C, Jiang P, Vujanović A, Krajnc D, Lee CT. Uncovering environmental performance patterns of plastic packaging waste in high recovery rate countries: An example of EU-27. ENVIRONMENTAL RESEARCH 2024; 241:117581. [PMID: 37967705 DOI: 10.1016/j.envres.2023.117581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/30/2023] [Accepted: 11/01/2023] [Indexed: 11/17/2023]
Abstract
Plastic consumption and its end-of-life management pose a significant environmental footprint and are energy intensive. Waste-to-resources and prevention strategies have been promoted widely in Europe as countermeasures; however, their effectiveness remains uncertain. This study aims to uncover the environmental footprint patterns of the plastics value chain in the European Union Member States (EU-27) through exploratory data analysis with dimension reduction and grouping. Nine variables are assessed, ranging from socioeconomic and demographic to environmental impacts. Three clusters are formed according to the similarity of a range of characteristics (nine), with environmental impacts being identified as the primary influencing variable in determining the clusters. Most countries belong to Cluster 0, consisting of 17 countries in 2014 and 18 countries in 2019. They represent clusters with a relatively low global warming potential (GWP), with an average value of 2.64 t CO2eq/cap in 2014 and 4.01 t CO2eq/cap in 2019. Among all the assessed countries, Denmark showed a significant change when assessed within the traits of EU-27, categorised from Cluster 1 (high GWP) in 2014 to Cluster 0 (low GWP) in 2019. The analysis of plastic packaging waste statistics in 2019 (data released in 2022) shows that, despite an increase in the recovery rate within the EU-27, the GWP has not reduced, suggesting a rebound effect. The GWP tends to increase in correlation with the higher plastic waste amount. In contrast, other environmental impacts, like eutrophication, abiotic and acidification potential, are identified to be mitigated effectively via recovery, suppressing the adverse effects of an increase in plastic waste generation. The five-year interval data analysis identified distinct clusters within a set of patterns, categorising them based on their similarities. The categorisation and managerial insights serve as a foundation for devising a focused mitigation strategy.
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Affiliation(s)
- Yee Van Fan
- Sustainable Process Integration Laboratory - SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic.
| | - Lidija Čuček
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, Maribor, Slovenia
| | - Chunyan Si
- Sustainable Process Integration Laboratory - SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic
| | - Peng Jiang
- Department of Industrial Engineering and Management, Business School, Sichuan University, Chengdu 610064, China
| | - Annamaria Vujanović
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, Maribor, Slovenia
| | - Damjan Krajnc
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, Maribor, Slovenia
| | - Chew Tin Lee
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
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15
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Viora L, Combeau M, Pucci MF, Perrin D, Liotier PJ, Bouvard JL, Combeaud C. A Comparative Study on Crystallisation for Virgin and Recycled Polyethylene Terephthalate (PET): Multiscale Effects on Physico-Mechanical Properties. Polymers (Basel) 2023; 15:4613. [PMID: 38232036 PMCID: PMC10708313 DOI: 10.3390/polym15234613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 01/19/2024] Open
Abstract
Poly(Ethylene Terephthalate) (PET) is one of the most used polymers for packaging applications. Modifications induced by service conditions and the means to make this matter circular have to be understood to really close the loop (from bottle to bottle for example). Physico-chemical properties, crystalline organisation, and mechanical behaviour of virgin PET (vPET) are compared with those of recycled PET (rPET). Using different combined experimental methods (Calorimetry, Small Angle X-ray Scattering [SAXS], Atomic Force Microscopy [AFM], Dynamic Mechanical Analysis [DMA], and uniaxial tensile test), it has been proven that even if there is no change in the crystallinity of PET, the crystallisation process shows some differences (size and number of spherulites). The potential impact of these differences on local mechanical characterisation is explored and tends to demonstrate the development of a homogeneous microstructure, leading to well-controlled and relevant local mechanical property characterisation. The main contribution of the present study is a better understanding of crystallisation of PET and recycled PET during forming processes such as thermoforming or Injection Stretch Blow Moulding (ISBM), during which elongation at the point of breaking can depend on the microstructure conditioned by the crystallisation process.
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Affiliation(s)
- Laurianne Viora
- Mines Paris, Centre for Material Forming (CEMEF), PSL University, UMR CNRS 7635, 1 rue Claude Daunesse, CS 10207, 06904 Sophia Antipolis, France; (L.V.); (J.-L.B.); (C.C.)
| | - Marie Combeau
- PCH, IMT Mines Ales, 30100 Ales, France; (M.C.); (P.-J.L.)
| | | | - Didier Perrin
- PCH, IMT Mines Ales, 30100 Ales, France; (M.C.); (P.-J.L.)
| | | | - Jean-Luc Bouvard
- Mines Paris, Centre for Material Forming (CEMEF), PSL University, UMR CNRS 7635, 1 rue Claude Daunesse, CS 10207, 06904 Sophia Antipolis, France; (L.V.); (J.-L.B.); (C.C.)
| | - Christelle Combeaud
- Mines Paris, Centre for Material Forming (CEMEF), PSL University, UMR CNRS 7635, 1 rue Claude Daunesse, CS 10207, 06904 Sophia Antipolis, France; (L.V.); (J.-L.B.); (C.C.)
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16
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Zhuo Y, He J, Li W, Deng J, Lin Q. A review on takeaway packaging waste: Types, ecological impact, and disposal route. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122518. [PMID: 37678737 DOI: 10.1016/j.envpol.2023.122518] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/31/2023] [Accepted: 09/04/2023] [Indexed: 09/09/2023]
Abstract
Rapid economic growth and urbanization have led to significant changes in the world's consumption patterns. Accelerated urbanization, the spread of the mobile Internet, and the increasing pace of work globally have all contributed to the demand for the food takeaway industry. The rapid development of the takeaway industry inevitably brings convenience to life, and with it comes great environmental pressure from waste packaging materials. While maintaining the convenience of people's lives, further reducing the environmental pollution caused by takeaway packaging materials and promoting the recycling and reuse of takeaway packaging waste need to attract the attention and concern of the whole society. This review systematically and comprehensively introduces common takeaway food types and commonly used packaging materials, analyzes the impacts of discarded takeaway packaging materials on human health and the ecological environment, summarizes the formulation and implementation of relevant policies and regulations, proposes treatment methods and resourceful reuse pathways for discarded takeaway packaging, and also provides an outlook on the development of green takeaway packaging. Currently, only 20% of waste packaging materials are recycled worldwide, and there is still a need to develop more green takeaway packaging materials and continuously improve relevant policies and regulations to promote the sustainable development of the takeaway industry. The review is conducive to further optimizing the takeaway packaging management system, alleviating the environmental pollution problem, and providing feasible solutions and technical guidance for further optimizing takeaway food packaging materials and comprehensive utilization of resources.
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Affiliation(s)
- Yu Zhuo
- National Engineering Research Center of Rice and Byproduct Deep Processing, Hunan Province Key Laboratory of Edible forestry Resources Safety and Processing Utilization, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China
| | - JinTao He
- National Engineering Research Center of Rice and Byproduct Deep Processing, Hunan Province Key Laboratory of Edible forestry Resources Safety and Processing Utilization, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China
| | - Wen Li
- National Engineering Research Center of Rice and Byproduct Deep Processing, Hunan Province Key Laboratory of Edible forestry Resources Safety and Processing Utilization, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China; Hunan Provincial Engineering Technology Research Center of Seasonings Green Manufacturing, Changsha, 410004, China; College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, 210023, Jiangsu, China.
| | - Jing Deng
- National Engineering Research Center of Rice and Byproduct Deep Processing, Hunan Province Key Laboratory of Edible forestry Resources Safety and Processing Utilization, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China
| | - QinLu Lin
- National Engineering Research Center of Rice and Byproduct Deep Processing, Hunan Province Key Laboratory of Edible forestry Resources Safety and Processing Utilization, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China; Hunan Provincial Engineering Technology Research Center of Seasonings Green Manufacturing, Changsha, 410004, China; College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, 210023, Jiangsu, China
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17
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Zhou C, Zhang J, Fu Y, Wu M, Zhang H, Shi Q, Dai Y, Zhao H. High-Value Oil-Water Separation Materials Prepared from Waste Polyethylene Terephthalate. Molecules 2023; 28:7503. [PMID: 38005224 PMCID: PMC10672785 DOI: 10.3390/molecules28227503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/05/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
As one of the most common forms of waste, waste PET is a serious pollutant in natural and human living environments. There is an urgent need to recycle PET. For this study, the complete degradation of PET was realized at a low temperature. A lipophilic hydrophobic membrane was formed on the surface of a stainless steel mesh (SSM) using a simple dip coating method, and an oil-water separation material was successfully prepared. After loading with degradation products, the surface roughness of SSM increased from 19.09 μm to 62.33 μm. The surface changed from hydrophilic to hydrophobic, and the water contact angle increased to 123°. The oil-water separation flux of the modified SSM was 9825 L/(m2·h), and the separation efficiency was 98.99%. The modified SSM had good reuse performance. This hydrophobic modification method can also be used to modify other porous substrates, such as activated carbon, filter paper, foam, and other materials. The porous substrate modified by the degradation product of waste PET was used to prepare oil-water separation materials, not only solving the problem of white pollution but also reducing the dependence on non-renewable resources in the conventional methods used for the preparation of oil-water separation materials. This study provides new raw materials and methods for the industrial production of oil-water separation materials, which have important application prospects.
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Affiliation(s)
- Changjian Zhou
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (C.Z.)
| | - Jiahao Zhang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (C.Z.)
| | - Yuqing Fu
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (C.Z.)
| | - Maowan Wu
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (C.Z.)
| | - Heng Zhang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (C.Z.)
| | - Qingle Shi
- Sunlour Pigment Co., Ltd., Xinghua 225431, China
| | - Yong Dai
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (C.Z.)
| | - He Zhao
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (C.Z.)
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18
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Barjoveanu G, Gadaleta G, Santomasi G, De Gisi S, Notarnicola M, Teodosiu C. Does PET trays sorting affect the sustainability of plastic waste? An LCA and cost-revenue approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 897:165222. [PMID: 37419361 DOI: 10.1016/j.scitotenv.2023.165222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/09/2023]
Abstract
Currently, the management of polyethylene terephthalate (PET) trays waste is still challenging since this packaging affects the consolidate recycling of PET bottles. It is important to separate PET trays from the PET bottle waste stream to avoid its contamination during recycling process and to recover a higher amount of PET. Hence, the present study aims to evaluate the environmental (by means of Life Cycle Assessment, LCA) and economic sustainability of sorting PET trays from the plastic waste streams selected by a Material Recovery Facility (MRF). For this scope, the case of a MRF in Molfetta (Southern Italy) was chosen as reference, and different scenarios have been evaluated by assuming different schemes of manual and/or automated PET trays sorting. The alternative scenarios did not achieve very pronounced environmental benefits over the reference case. Upgraded scenarios resulted in overall environmental impacts approx. 10 % lower as compared to the current scenario, with the exception of the climate and ozone depletion categories where differences in impacts were much higher. From an economic point of view, the upgraded scenarios achieved slightly lower costs (<2 %) than the current one. Electricity or labour costs were necessary in upgraded scenarios, but in this way fines for PET trays contamination in PET streams for recycling were avoided. Implementing any of the technology upgrade scenarios is then environmentally and economically viable, when the PET sorting scheme is performed in appropriate output streams through optical sorting.
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Affiliation(s)
- George Barjoveanu
- Department of Environmental Engineering and Management, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania
| | - Giovanni Gadaleta
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Politecnico di Bari, Via E. Orabona 4, 70125 Bari, Italy
| | - Giusy Santomasi
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Politecnico di Bari, Via E. Orabona 4, 70125 Bari, Italy
| | - Sabino De Gisi
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Politecnico di Bari, Via E. Orabona 4, 70125 Bari, Italy.
| | - Michele Notarnicola
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Politecnico di Bari, Via E. Orabona 4, 70125 Bari, Italy
| | - Carmen Teodosiu
- Department of Environmental Engineering and Management, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania.
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19
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Cristóbal J, Federica Albizzati P, Giavini M, Caro D, Manfredi S, Tonini D. Management practices for compostable plastic packaging waste: Impacts, challenges and recommendations. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 170:166-176. [PMID: 37586221 DOI: 10.1016/j.wasman.2023.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/23/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023]
Abstract
The EU Green Deal aims at solving the challenges related to plastic production, (mis-)use, and pollution. While the bioplastic industry is identified as one of the possible avenues to tackle the problem, bioplastic waste collection and management practices are still far from full-development and harmonisation. To inform policy makers on the best practices and their feasibility, this study quantifies environmental and economic impacts of compostable plastic packaging (CPP) waste management schemes by means of Life Cycle Assessment and Costing. Results show that, with respect to climate change and financial costs, the scheme leading to the highest benefits is collecting CPP with conventional plastic waste followed by mechanical sorting and recycling (saving ca. 306 kg CO2eq. t-1 at a net income of 3.7 EUR t-1). The second best option is collecting CPP with bio-waste followed by biological treatment (saving ca. 69 kg CO2eq. t-1 at a cost of 197 EUR t-1). Collecting CPP with conventional plastics followed by sorting and biological treatment is to be avoided. The trend on the other impact categories generally follows climate change. Ideally, closed loop is therefore preferred, but conditioned by (i) having high share of CPP in municipal waste (else sorting is economically unfeasible), (ii) good citizen's behaviour at source-segregation, and (iii) an established market for secondary material. Currently, overall benefits are limited by the low amounts, suggesting that the management choice could ultimately be based on rather simple technical and economic feasibility criteria while regulatory and management efforts should be focused on other waste streams with greater implications on environment.
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Affiliation(s)
- Jorge Cristóbal
- Joint Research Centre of the European Commission, Directorate D - Sustainable Resources, Unit D3 - Land Resources and Supply Chain Assessment, Via E. Fermi 2749, 21027 Ispra, VA, Italy.
| | - Paola Federica Albizzati
- Joint Research Centre of the European Commission, Directorate D - Sustainable Resources, Unit D3 - Land Resources and Supply Chain Assessment, Via E. Fermi 2749, 21027 Ispra, VA, Italy
| | - Michele Giavini
- ARS Ambiente Srl, Via Carlo Noe 45, 21013 Gallarate, VA, Italy
| | - Dario Caro
- Joint Research Centre of the European Commission, Directorate B - Growth and Innovation, Unit B5 - Circular Economy and Sustainable Industry, Calle Inca Garcilaso, 41092 Seville, Spain
| | - Simone Manfredi
- Joint Research Centre of the European Commission, Directorate D - Sustainable Resources, Unit D3 - Land Resources and Supply Chain Assessment, Via E. Fermi 2749, 21027 Ispra, VA, Italy
| | - Davide Tonini
- Joint Research Centre of the European Commission, Directorate B - Growth and Innovation, Unit B5 - Circular Economy and Sustainable Industry, Calle Inca Garcilaso, 41092 Seville, Spain
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20
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Alsadat-Seyedbokaei F, Felix M, Bengoechea C. Zein as a Basis of Recyclable Injection Moulded Materials: Effect of Formulation and Processing Conditions. Polymers (Basel) 2023; 15:3841. [PMID: 37765695 PMCID: PMC10535502 DOI: 10.3390/polym15183841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/17/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
The growing concern about reducing carbon footprint has led to the progressive replacement of traditional polymeric materials by natural-based biodegradable materials. However, materials from natural sources (i.e., plants) typically possess poorer mechanical properties when compared to conventional plastics. To counterbalance this, they need to be adequately formulated and processed to eventually meet the standards for certain applications. Zein is the major storage protein from corn and can be obtained as a by-product from the corn-oil industry. It is an excellent candidate for producing green materials due to its stability, biodegradability, renewability, and suitable mechanical and technical-functional properties. In the present work, zein was blended with a plasticizer (i.e., glycerol) at three different zein/glycerol ratios (75/25, 70/30, and 65/25) and then injection moulded at three different processing temperatures (120, 150, and 190 °C). The properties of both blends and bioplastics were evaluated using dynamic mechanical analysis (DMA), tensile tests, and water absorption capacity (WUC). The properties-structure interrelation was assessed through a scanning electron microscope. Generally, a higher zein content and processing temperature led to a certain reinforcement of the samples. Moreover, all bioplastics displayed a thermoplastic behaviour finally melting at temperatures around 80 °C. The lack of massive crosslinking enabled this melting, which finally could be used to confirm the ability of zein based materials to be recycled, while maintaining their properties. The recyclability of thermoplastic zein materials widens the scope of their application, especially considering its biodegradability.
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Affiliation(s)
| | - Manuel Felix
- Departamento de Ingeniería Química, Universidad de Sevilla, Escuela Politécnica Superior, 41011 Sevilla, Spain; (F.A.-S.); (C.B.)
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21
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Roosen M, Tonini D, Albizzati PF, Caro D, Cristóbal J, Lase IS, Ragaert K, Dumoulin A, De Meester S. Operational Framework to Quantify "Quality of Recycling" across Different Material Types. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13669-13680. [PMID: 37640371 PMCID: PMC10501198 DOI: 10.1021/acs.est.3c03023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 08/31/2023]
Abstract
Many pledges and laws are setting recycling targets without clearly defining quality of recycling. Striving to close this gap, this study presents an operational framework to quantify quality of recycling. The framework comprises three dimensions: the Virgin Displacement Potential (VDP); In-Use Stocks Lifetime (IUSL); and Environmental Impact (EI). The VDP indicates to what extent a secondary material can be used as a substitute for virgin material; the IUSL indicates how much of a certain material is still functional in society over a given time frame, and the EI is a measure of the environmental impact of a recycling process. The three dimensions are aggregated by plotting them in a distance-to-target graph. Two example calculations are included on poly(ethylene terephthalate) (PET) and glass. The results indicate that the recycling of bottle and container glass collected via a deposit-refund system has the lowest distance-to-target, at 1.05, and, thus, the highest quality of recycling. For PET bottles, the highest quality of recycling is achieved in closed-loop mechanical recycling of bottles (distance to optimal quality of 0.96). Furthermore, sensitivity analysis indicates that certain parameters, e.g., the collection rate for PET bottles, can reduce the distance-to-target to 0.75 when all bottles are collected for recycling.
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Affiliation(s)
- Martijn Roosen
- Laboratory
for Circular Process Engineering (LCPE), Department of Green Chemistry
and Technology, Faculty of Bioscience Engineering, Ghent University, Sint-Martens-Latemlaan 2B, 8500 Kortrijk, Belgium
| | - Davide Tonini
- Directorate
B—Growth and Innovation, Unit B5—Circular Economy and
Industrial Leadership, Joint Research Centre
of the European Commission, Calle Inca Garcilaso, 41092 Seville, Spain
| | - Paola Federica Albizzati
- Directorate
D—Sustainable Resources, Unit D3—Land Resources, Joint Research Centre of the European Commission, Via E. Fermi 2749, 21027 Ispra, VA, Italy
| | - Dario Caro
- Directorate
B—Growth and Innovation, Unit B5—Circular Economy and
Industrial Leadership, Joint Research Centre
of the European Commission, Calle Inca Garcilaso, 41092 Seville, Spain
| | - Jorge Cristóbal
- Directorate
D—Sustainable Resources, Unit D3—Land Resources, Joint Research Centre of the European Commission, Via E. Fermi 2749, 21027 Ispra, VA, Italy
| | - Irdanto Saputra Lase
- Laboratory
for Circular Process Engineering (LCPE), Department of Green Chemistry
and Technology, Faculty of Bioscience Engineering, Ghent University, Sint-Martens-Latemlaan 2B, 8500 Kortrijk, Belgium
- Directorate
B—Growth and Innovation, Unit B5—Circular Economy and
Industrial Leadership, Joint Research Centre
of the European Commission, Calle Inca Garcilaso, 41092 Seville, Spain
| | - Kim Ragaert
- Circular
Plastics, Department of Circular Chemical Engineering, Faculty of
Science and Engineering, Maastricht University, Urmonderbaan 22, 6162 AL Geleen, The Netherlands
| | - Ann Dumoulin
- Laboratory
for Circular Process Engineering (LCPE), Department of Green Chemistry
and Technology, Faculty of Bioscience Engineering, Ghent University, Sint-Martens-Latemlaan 2B, 8500 Kortrijk, Belgium
| | - Steven De Meester
- Laboratory
for Circular Process Engineering (LCPE), Department of Green Chemistry
and Technology, Faculty of Bioscience Engineering, Ghent University, Sint-Martens-Latemlaan 2B, 8500 Kortrijk, Belgium
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22
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Callewaert P, Lerche Raadal H, Lyng KA. How to achieve ambitious recycling targets for plastic packaging waste? The environmental impact of increased waste separation and sorting in Norway. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 171:218-226. [PMID: 37666147 DOI: 10.1016/j.wasman.2023.08.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 09/06/2023]
Abstract
Driven by European legislation, counties must improve their plastic packaging recycling system to meet ambitious recycling targets. This study analyses the current plastic packaging recycling system in Norway, together with three alternative systems and evaluates their performance on environmental impact and achievement of policy indicators. The alternative systems include measures to increase separation of plastic packaging waste and to increase plastic sorting capacity in Norway. A lower impact on climate change (between 531 kg and 874 kg CO2 eq. compared to the current system) was obtained for scenarios with high separation of plastic packaging waste. Without better waste separation, increased sorting in Norway resulted in a higher impact on climate change (between 46 kg and 123 kg CO2 eq.) compared to the current system. Mixed-waste MRFs can help to obtain high recycling rates, but their implementation should be coordinated centrally to avoid potential adverse effects. Furthermore, none of the proposed systems reached the recycling rate targets, showing that improvements are necessary across the entire value chain.
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Affiliation(s)
- Pieter Callewaert
- NORSUS Norwegian Institute for Sustainability Research, Stadion 4, 1671 Kråkerøy, Norway.
| | - Hanne Lerche Raadal
- NORSUS Norwegian Institute for Sustainability Research, Stadion 4, 1671 Kråkerøy, Norway
| | - Kari-Anne Lyng
- NORSUS Norwegian Institute for Sustainability Research, Stadion 4, 1671 Kråkerøy, Norway
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23
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Cimpan C, Bjelle EL, Budzinski M, Wood R, Strømman AH. Effects of Circularity Interventions in the European Plastic Packaging Sector. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023. [PMID: 37384586 DOI: 10.1021/acs.est.2c08202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Low levels of plastics circularity today reflect major challenges for the sector to reduce environmental impacts and a need for wider systemic change. In this work, we investigated the potential for climate and socioeconomic benefits of circular economy (CE) interventions in the plastic packaging system. By means of a mixed-unit input-output (IO) model, we performed a comparative scenario analysis for the development of demand and waste management up to 2030 within the EU-28 (EU27 + United Kingdom). We modeled the development of material flows and assessed the effects of both demand-side and end-of-life interventions. Different levels of ambition toward 2030 based on EU circular economy strategies were tested. Results showed that on reaching high levels of circularity, between 14 and 22 Mt CO2-eq/year could be reduced by 2030 (20-30% of the total sector impact in 2018) compared to business-as-usual. Demand change (e.g., by decreasing product packaging intensities) showed similar emission-saving potential as achieving the current recycling target of 55%, which emphasizes the role of demand-side actions. Most scenarios displayed moderate employment gains and potential economic losses, pertaining to both direct and indirect activity shifts in the economy. While considering model limitations, the approach is useful in indicating potential first-order effects of system changes.
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Affiliation(s)
- Ciprian Cimpan
- Industrial Ecology Programme, Department of energy and process engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
| | | | - Maik Budzinski
- Industrial Ecology Programme, Department of energy and process engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
| | - Richard Wood
- Industrial Ecology Programme, Department of energy and process engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
| | - Anders Hammer Strømman
- Industrial Ecology Programme, Department of energy and process engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
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24
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Abbas-Abadi MS, Kusenberg M, Zayoud A, Roosen M, Vermeire F, Madanikashani S, Kuzmanović M, Parvizi B, Kresovic U, De Meester S, Van Geem KM. Thermal pyrolysis of waste versus virgin polyolefin feedstocks: The role of pressure, temperature and waste composition. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 165:108-118. [PMID: 37119685 DOI: 10.1016/j.wasman.2023.04.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 03/27/2023] [Accepted: 04/14/2023] [Indexed: 05/20/2023]
Abstract
Due to the complexity and diversity of polyolefinic plastic waste streams and the inherent non-selective nature of the pyrolysis chemistry, the chemical decomposition of plastic waste is still not fully understood. Accurate data of feedstock and products that also consider impurities is, in this context, quite scarce. Therefore this work focuses on the thermochemical recycling via pyrolysis of different virgin and contaminated waste-derived polyolefin feedstocks (i.e., low-density polyethylene (LDPE), polypropylene (PP) as main components), along with an investigation of the decomposition mechanisms based on the detailed composition of the pyrolysis oils. Crucial in this work is the detailed chemical analysis of the resulting pyrolysis oils by comprehensive two-dimensional gas chromatography (GC × GC) and ICP-OES, among others. Different feedstocks were pyrolyzed at a temperature range of 430-490 °C and at pressures between 0.1 and 2 bar in a continuous pilot-scale pyrolysis unit. At the lowest pressure, the pyrolysis oil yield of the studied polyolefins reached up to 95 wt%. The pyrolysis oil consists of primarily α-olefins (37-42 %) and n-paraffins (32-35 %) for LDPE pyrolysis, while isoolefins (mostly C9 and C15) and diolefins accounted for 84-91 % of the PP-based pyrolysis oils. The post-consumer waste feedstocks led to significantly less pyrolysis oil yields and more char formation compared to their virgin equivalents. It was found that plastic aging, polyvinyl chloride (PVC) (3 wt%), and metal contamination were the main causes of char formation during the pyrolysis of polyolefin waste (4.9 wt%).
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Affiliation(s)
- Mehrdad Seifali Abbas-Abadi
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, B-9052 Zwijnaarde, Belgium
| | - Marvin Kusenberg
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, B-9052 Zwijnaarde, Belgium
| | - Azd Zayoud
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, B-9052 Zwijnaarde, Belgium
| | - Martijn Roosen
- Laboratory for Circular Process Engineering (LCPE), Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, B-8500 Kortrijk, Belgium
| | - Florence Vermeire
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, B-9052 Zwijnaarde, Belgium
| | - Sepehr Madanikashani
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, B-9052 Zwijnaarde, Belgium; Materials and Process Engineering (IMAP), Institute of Mechanics, Materials and Civil Engineering (iMMC), Université catholique de Louvain - Place Sainte Barbe 2, B-1348 Louvain-la-Neuve, Belgium
| | - Maja Kuzmanović
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, B-9052 Zwijnaarde, Belgium; College of Polymer Science and Engineering, Sichuan University (Wangjiang campus), No.24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Behzad Parvizi
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, B-9052 Zwijnaarde, Belgium
| | | | - Steven De Meester
- Laboratory for Circular Process Engineering (LCPE), Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, B-8500 Kortrijk, Belgium
| | - Kevin M Van Geem
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, B-9052 Zwijnaarde, Belgium.
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25
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Guo J, Luo C, Wittkowski C, Fehr I, Chong Z, Kitzberger M, Alassali A, Zhao X, Leineweber R, Feng Y, Kuchta K. Screening the Impact of Surfactants and Reaction Conditions on the De-Inkability of Different Printing Ink Systems for Plastic Packaging. Polymers (Basel) 2023; 15:polym15092220. [PMID: 37177366 PMCID: PMC10180929 DOI: 10.3390/polym15092220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/27/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023] Open
Abstract
One of the major applications (40% in Europe) of plastic is packaging, which is often printed to display required information and to deliver an attractive aesthetic for marketing purposes. However, printing ink can cause contamination in the mechanical recycling process. To mitigate this issue, the use of surfactants in an alkaline washing process, known as de-inking, has been employed to remove printing ink and improve the quality of recyclates. Despite the existence of this technology, there are currently no data linking the de-inking efficiency with typical printing ink compositions. Additionally, it is necessary to investigate the de-inking process under the process parameters of existing recycling plants, including temperature, NaOH concentration, and retention time. This study aims to evaluate the performance of commonly used printing inks with different compositions under various washing scenarios for plastic recycling in conjunction with different de-inking detergents containing surfactants or mixtures of surfactants. The results indicate that the pigments applied to the ink have no significant effect on the de-inking process, except for carbon black (PBk 7). Nitrocellulose (NC) binder systems exhibit high de-inkability (over 95%) under the condition of 55 °C and 1 wt.% NaOH. However, crosslinked binder systems can impede the de-inking effect, whether used as a binder system or as an overprint varnish (OPV). The de-inking process requires heating to 55 °C with 1 wt.% NaOH to achieve a substantial effect. Based on the findings in this work, breaking the Van der Waals forces, hydrogen bonds, and covalent bonds between the printing ink and plastic film is an essential step to achieve the de-inking effect. Further research is needed to understand the interaction between surfactants and printing inks, enabling the development of de-inkable printing inks and high-performance surfactants that allow for de-inking with less energy consumption. The surfactant and NaOH have a synergistic effect in cleaning the printing ink. NaOH provides a negative surface charge for the adsorption of the cationic head of the surfactant and can hydrolyze the covalent bonds at higher concentrations (>2 wt.%).
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Affiliation(s)
- Jinyang Guo
- Circular Resource Engineering and Management (CREM), Hamburg University of Technology (TUHH), Blohm Str. 15, 21079 Hamburg, Germany
| | - Cong Luo
- Circular Resource Engineering and Management (CREM), Hamburg University of Technology (TUHH), Blohm Str. 15, 21079 Hamburg, Germany
| | | | - Ingo Fehr
- Siegwerk Druckfarben AG_Co.KGaA, Alfred-Keller-Str. 55, 53721 Siegburg, Germany
| | - Zhikai Chong
- Circular Resource Engineering and Management (CREM), Hamburg University of Technology (TUHH), Blohm Str. 15, 21079 Hamburg, Germany
| | - Magdalena Kitzberger
- Circular Resource Engineering and Management (CREM), Hamburg University of Technology (TUHH), Blohm Str. 15, 21079 Hamburg, Germany
| | - Ayah Alassali
- Circular Resource Engineering and Management (CREM), Hamburg University of Technology (TUHH), Blohm Str. 15, 21079 Hamburg, Germany
| | - Xuezhi Zhao
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ralf Leineweber
- Siegwerk Druckfarben AG_Co.KGaA, Alfred-Keller-Str. 55, 53721 Siegburg, Germany
| | - Yujun Feng
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Kerstin Kuchta
- Circular Resource Engineering and Management (CREM), Hamburg University of Technology (TUHH), Blohm Str. 15, 21079 Hamburg, Germany
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26
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Almanza Junco CA, Pulido Ramirez MDP, Gaitán Angulo M, Gómez-Caicedo MI, Mercado Suárez ÁL. Factors for the implementation of the circular economy in Big Data environments in service companies in post pandemic times of COVID-19: The case of Colombia. Front Big Data 2023; 6:1156780. [PMID: 37091457 PMCID: PMC10116947 DOI: 10.3389/fdata.2023.1156780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/15/2023] [Indexed: 04/05/2023] Open
Abstract
In emerging economies, Big Data (BD) analytics has become increasingly popular, particularly regarding the opportunities and expected benefits. Such analyzes have identified that the production and consumption of goods and services, while unavoidable, have proven to be unsustainable and inefficient. For this reason, the concept of the circular economy (CE) has emerged strongly as a sustainable approach that contributes to the eco-efficient use of resources. However, to develop a circular economy in DB environments, it is necessary to understand what factors influence the intention to accept its implementation. The main objective of this research was to assess the influence of attitudes, subjective norms, and perceived behavioral norms on the intention to adopt CE in BD-mediated environments. The methodology is quantitative, cross-sectional with a descriptive correlational approach, based on the theory of planned behavior and a Partial Least Squares Structural Equation Model (PLS-SEM). A total of 413 Colombian service SMEs participated in the study. The results show that managers' attitudes, subjective norms, and perceived norms of behavior positively influence the intentions of organizations to implement CB best practices. Furthermore, most organizations have positive intentions toward CE and that these intentions positively influence the adoption of DB; however, the lack of government support and cultural barriers are perceived as the main limitation for its adoption. The research leads to the conclusion that BD helps business and government develop strategies to move toward CE, and that there is a clear positive will and intent toward a more restorative and sustainable corporate strategy.
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Affiliation(s)
| | | | - Mercedes Gaitán Angulo
- Escuela de Negocios, Universidad Carlemany, Sant Julià de Lòria, Andorra
- *Correspondence: Mercedes Gaitán Angulo
| | - Melva Inés Gómez-Caicedo
- Facultad de Ciencias Económicas, Administrativas y Contables, Fundación Universitaria Los Libertadores, Bogotá, Colombia
| | - Álvaro Luis Mercado Suárez
- Facultad de Ciencias Económicas, Administrativas y Contables, Fundación Universitaria Los Libertadores, Bogotá, Colombia
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27
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The Key to Solving Plastic Packaging Wastes: Design for Recycling and Recycling Technology. Polymers (Basel) 2023; 15:polym15061485. [PMID: 36987265 PMCID: PMC10053126 DOI: 10.3390/polym15061485] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
Confronted with serious environmental problems caused by the growing mountains of plastic packaging waste, the prevention and control of plastic waste has become a major concern for most countries. In addition to the recycling of plastic wastes, design for recycling can effectively prevent plastic packaging from turning into solid waste at the source. The reasons are that the design for recycling can extend the life cycle of plastic packaging and increase the recycling values of plastic waste; moreover, recycling technologies are helpful for improving the properties of recycled plastics and expanding the application market for recycled materials. This review systematically discussed the present theory, practice, strategies, and methods of design for recycling plastic packaging and extracted valuable advanced design ideas and successful cases. Furthermore, the development status of automatic sorting methods, mechanical recycling of individual and mixed plastic waste, as well as chemical recycling of thermoplastic and thermosetting plastic waste, were comprehensively summarized. The combination of the front-end design for recycling and the back-end recycling technologies can accelerate the transformation of the plastic packaging industry from an unsustainable model to an economic cycle model and then achieve the unity of economic, ecological, and social benefits.
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28
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Eissenberger K, Ballesteros A, De Bisschop R, Bugnicourt E, Cinelli P, Defoin M, Demeyer E, Fürtauer S, Gioia C, Gómez L, Hornberger R, Ißbrücker C, Mennella M, von Pogrell H, Rodriguez-Turienzo L, Romano A, Rosato A, Saile N, Schulz C, Schwede K, Sisti L, Spinelli D, Sturm M, Uyttendaele W, Verstichel S, Schmid M. Approaches in Sustainable, Biobased Multilayer Packaging Solutions. Polymers (Basel) 2023; 15:polym15051184. [PMID: 36904425 PMCID: PMC10007551 DOI: 10.3390/polym15051184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/07/2023] [Accepted: 02/10/2023] [Indexed: 03/03/2023] Open
Abstract
The depletion of fossil resources and the growing demand for plastic waste reduction has put industries and academic researchers under pressure to develop increasingly sustainable packaging solutions that are both functional and circularly designed. In this review, we provide an overview of the fundamentals and recent advances in biobased packaging materials, including new materials and techniques for their modification as well as their end-of-life scenarios. We also discuss the composition and modification of biobased films and multilayer structures, with particular attention to readily available drop-in solutions, as well as coating techniques. Moreover, we discuss end-of-life factors, including sorting systems, detection methods, composting options, and recycling and upcycling possibilities. Finally, regulatory aspects are pointed out for each application scenario and end-of-life option. Moreover, we discuss the human factor in terms of consumer perception and acceptance of upcycling.
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Affiliation(s)
- Kristina Eissenberger
- Sustainable Packaging Institute SPI, Faculty of Life Sciences, Albstadt-Sigmaringen University, Anton-Günther-Str. 51, 72488 Sigmaringen, Germany
- Correspondence: (K.E.); (M.S.)
| | - Arantxa Ballesteros
- Centro Tecnológico ITENE, Parque Tecnológico, Carrer d’Albert Einstein 1, 46980 Paterna, Spain
| | - Robbe De Bisschop
- Centexbel, Textile Competence Centre, Etienne Sabbelaan 49, 8500 Kortrijk, Belgium
| | - Elodie Bugnicourt
- Graphic Packaging International, Fountain Plaza, Belgicastraat 7, 1930 Zaventem, Belgium
| | - Patrizia Cinelli
- Planet Bioplastics S.r.l., Via San Giovanni Bosco 23, 56127 Pisa, Italy
| | - Marc Defoin
- Bostik SA, 420 rue d’Estienne d’Orves, 92700 Colombes, France
| | - Elke Demeyer
- Centexbel, Textile Competence Centre, Etienne Sabbelaan 49, 8500 Kortrijk, Belgium
| | - Siegfried Fürtauer
- Fraunhofer Institute for Process Engineering and Packaging, Materials Development, Giggenhauser Str. 35, 85354 Freising, Germany
| | - Claudio Gioia
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40131 Bologna, Italy
| | - Lola Gómez
- AIMPLAS, Plastics Technology Center, Valencia Parc Tecnologic, Carrer de Gustave Eiffel 4, 46980 Paterna, Spain
| | - Ramona Hornberger
- Fraunhofer Institute for Process Engineering and Packaging, Materials Development, Giggenhauser Str. 35, 85354 Freising, Germany
| | | | - Mara Mennella
- KNEIA S.L., Carrer d’Aribau 168-170, 08036 Barcelona, Spain
| | - Hasso von Pogrell
- AIMPLAS, Plastics Technology Center, Valencia Parc Tecnologic, Carrer de Gustave Eiffel 4, 46980 Paterna, Spain
| | | | - Angela Romano
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40131 Bologna, Italy
| | - Antonella Rosato
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40131 Bologna, Italy
| | - Nadja Saile
- Sustainable Packaging Institute SPI, Faculty of Life Sciences, Albstadt-Sigmaringen University, Anton-Günther-Str. 51, 72488 Sigmaringen, Germany
| | - Christian Schulz
- European Bioplastics e.V. (EUBP), Marienstr. 19/20, 10117 Berlin, Germany
| | - Katrin Schwede
- European Bioplastics e.V. (EUBP), Marienstr. 19/20, 10117 Berlin, Germany
| | - Laura Sisti
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40131 Bologna, Italy
| | - Daniele Spinelli
- Next Technology Tecnotessile, Chemical Division, Via del Gelso 13, 59100 Prato, Italy
| | - Max Sturm
- Sustainable Packaging Institute SPI, Faculty of Life Sciences, Albstadt-Sigmaringen University, Anton-Günther-Str. 51, 72488 Sigmaringen, Germany
| | - Willem Uyttendaele
- Centexbel, Textile Competence Centre, Etienne Sabbelaan 49, 8500 Kortrijk, Belgium
| | | | - Markus Schmid
- Sustainable Packaging Institute SPI, Faculty of Life Sciences, Albstadt-Sigmaringen University, Anton-Günther-Str. 51, 72488 Sigmaringen, Germany
- Correspondence: (K.E.); (M.S.)
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29
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Microbial Enzyme Biotechnology to Reach Plastic Waste Circularity: Current Status, Problems and Perspectives. Int J Mol Sci 2023; 24:ijms24043877. [PMID: 36835289 PMCID: PMC9967032 DOI: 10.3390/ijms24043877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
The accumulation of synthetic plastic waste in the environment has become a global concern. Microbial enzymes (purified or as whole-cell biocatalysts) represent emerging biotechnological tools for waste circularity; they can depolymerize materials into reusable building blocks, but their contribution must be considered within the context of present waste management practices. This review reports on the prospective of biotechnological tools for plastic bio-recycling within the framework of plastic waste management in Europe. Available biotechnology tools can support polyethylene terephthalate (PET) recycling. However, PET represents only ≈7% of unrecycled plastic waste. Polyurethanes, the principal unrecycled waste fraction, together with other thermosets and more recalcitrant thermoplastics (e.g., polyolefins) are the next plausible target for enzyme-based depolymerization, even if this process is currently effective only on ideal polyester-based polymers. To extend the contribution of biotechnology to plastic circularity, optimization of collection and sorting systems should be considered to feed chemoenzymatic technologies for the treatment of more recalcitrant and mixed polymers. In addition, new bio-based technologies with a lower environmental impact in comparison with the present approaches should be developed to depolymerize (available or new) plastic materials, that should be designed for the required durability and for being susceptible to the action of enzymes.
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30
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Smith E, Bilec MM, Khanna V. Evaluating the Global Plastic Waste Management System with Markov Chain Material Flow Analysis. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2023; 11:2055-2065. [PMID: 36969727 PMCID: PMC10034734 DOI: 10.1021/acssuschemeng.2c04270] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 01/08/2023] [Indexed: 06/18/2023]
Abstract
We present a global Markov chain-based material flow analysis of plastic waste of all types to estimate global virgin waste generation and waste mismanagement rates. We model nine alternative scenarios related to the elimination of plastic waste trade and improvements at various stages of the recycling chain, including "limitless" recycling promised by certain new chemical recycling technologies. We found that the elimination of trade increased global mismanagement when displaced waste was disposed but decreased mismanagement when it was instead recycled. Recycling scenarios showed little benefit for limitless recycling without prior increases in collection rates, which are currently the main constraint in the recycling chain. The most ambitious scenario only led to a 34% decrease in virgin waste generation. While significant, this implies that, given our current 40% mismanagement rate and 2050 forecasts of waste generation, landfilling and incineration capacity must increase 2.5-fold in addition to these extreme recycling targets to eliminate waste mismanagement. These results highlight the requirement for waste exporters to increase domestic recycling capacity as trade restrictions become tighter and express the urgent global need for alternative waste reduction interventions in addition to recycling.
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Affiliation(s)
- Elijah Smith
- Department
of Industrial Engineering, University of
Pittsburgh, 3700 O’Hara Street, 1025 Benedum Hall, Pittsburgh, Pennsylvania15261, United States
| | - Melissa M. Bilec
- Department
of Civil and Environmental Engineering, University of Pittsburgh, 3700 O’Hara Street, 742 Benedum Hall, Pittsburgh, Pennsylvania15261, United States
| | - Vikas Khanna
- Department
of Civil and Environmental Engineering, University of Pittsburgh, 3700 O’Hara Street, 742 Benedum Hall, Pittsburgh, Pennsylvania15261, United States
- Department
of Chemical and Petroleum Engineering, University
of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania15261, United States
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31
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Analysis and Test of Internal Blowing Anti-Tangle Bag-Breaking Device for Domestic Waste. Processes (Basel) 2023. [DOI: 10.3390/pr11020511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
The mechanized resource utilization of domestic waste is the development trend in the field of waste treatment. The difficulty of bag breaking and the easy entanglement of domestic waste are the factors restricting the mechanization of waste separation and recycling. In response to the above problems, an internal blowing anti-tangle bag-breaking device for domestic waste was developed by combining the arc-type cutter and the internal flow field of the rotary. In addition, the motion trajectory of the cutters and the support rods were theoretically analyzed, as well as the force during the bag-breaking process of domestic waste. A three-factor, five-level orthogonal test was carried out to complete the regression ANOVA, and a relationship model was constructed between the test factors such as the cutting–support speed ratio, the center distance, the inlet flow rate and the response indicators such as the bag film length–perimeter ratio and bag film winding specific gravity. The key parameters and their significant interactions with the bag-breaking efficiency were analyzed to obtain the optimal combination of parameters for the device. Under the same conditions, the errors between the physical test and model predictions for the two response indicators were 5.46% and 7.90%, respectively, indicating that the verification test results were basically consistent with the model prediction results.
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32
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Schuch D, Lederer J, Fellner J, Scharff C. Separate collection rates for plastic packaging in Austria - A regional analysis taking collection systems and urbanization into account. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 155:211-219. [PMID: 36399848 DOI: 10.1016/j.wasman.2022.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/13/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
According to the EU Circular Economy Package, recycling of plastic packaging waste (PPW) has to be enhanced significantly by 2025 and 2030. Although a set of measures will be required along the whole value chain of plastic packaging, the process of separate collection remains the backbone. Hence, a detailed understanding of the performance of current separate collection systems is crucial. As a case study, the separate collection of PPW was analyzed within a single country, Austria, where a variety of collection procedures are implemented. By using the method of material flow analysis, separate collection rates in terms of quantities and qualities were analyzed for separate collection systems of different settlement patterns, target fractions, and service levels provided. Results show that the highest performance was achieved in systems that cover mainly rural areas and where all plastic packaging wastes are collected through curbside collection, with separate collection rates of 74-77%. With additional collection via collection centers, these values increased to 78%-83%. In comparison, the results for urban areas showed the lowest separate collection rate of 56%. In the case that separate collection targeted plastic bottles only, maximum collection rates of around 50 % were observed, with the tendency towards higher collection rates if co-mingled with metals. To enhance separate collection, a general shift to the target fraction "all plastic packaging" instead of "plastic bottles only" is crucial. Modelling of optimized collection systems in all Austrian regions would lead to a theoretical total separation collection rate of 74%.
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Affiliation(s)
- Dieter Schuch
- Institute for Water Quality and Resource Management, TU Wien, Karlsplatz 13/226, 1040 Vienna, Austria; Altstoff Recycling Austria AG, Mariahilfer-Straße 123, 1060 Vienna, Austria.
| | - Jakob Lederer
- Christian Doppler Laboratory for a Recycling-based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Getreidemarkt 9/166, 1060 Vienna, Austria
| | - Johann Fellner
- Institute for Water Quality and Resource Management, TU Wien, Karlsplatz 13/226, 1040 Vienna, Austria
| | - Christoph Scharff
- Institute for Water Quality and Resource Management, TU Wien, Karlsplatz 13/226, 1040 Vienna, Austria; Altstoff Recycling Austria AG, Mariahilfer-Straße 123, 1060 Vienna, Austria
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33
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Boz Noyan EC, Venkatesh A, Boldizar A. Mechanical and Thermal Properties of Mixed PE Fractions from Post-Consumer Plastic Packaging Waste. ACS OMEGA 2022; 7:45181-45188. [PMID: 36530254 PMCID: PMC9753520 DOI: 10.1021/acsomega.2c05621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
The functional properties of recycled post-consumer flexible polyethylene packaging waste have been studied using materials collected and sorted at a large-scale facility in Sweden. The studied fraction was used both as received and after simple laboratory washing in water with added sodium hydroxide at 40 °C. The materials were melt-compounded with a twin-screw extruder using two different temperature profiles and two screw configurations and injection-molded into slabs, whose thermal and mechanical properties were assessed. The results showed that the mechanical properties of injection-molded samples were not changed significantly either by the washing or by the temperature or screw configuration used in the compounding. Washing reduced the viscosity and molecular mass to a minor extent. As expected, the ash content of the compounded pellets was reduced by washing. The thermo-oxidative stability decreased with increasing compounding temperature and with washing.
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Lase IS, Bashirgonbadi A, van Rhijn F, Dewulf J, Ragaert K, Delva L, Roosen M, Brandsma M, Langen M, De Meester S. Material flow analysis and recycling performance of an improved mechanical recycling process for post-consumer flexible plastics. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 153:249-263. [PMID: 36126399 PMCID: PMC9585909 DOI: 10.1016/j.wasman.2022.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 05/15/2023]
Abstract
Increasing the recycling rates for post-consumer flexible plastics (PCFP) waste is imperative as PCFP is considered a difficult-to-recycle waste with only 17 % of PCFP effectively recycled in Europe. To tackle this pressing issue, improved mechanical recycling processes are being explored to increase the recycling rates of PCFP. One interesting option is the so-called quality recycling process (QRP) proposed by CEFLEX, which supplements more conventional mechanical recycling of PCFP with additional sorting, hot washing, improved extrusion, and deodorization. Material flow analysis (MFA) model is applied to assess the performance of QRP. Four performance indicators related to quantity (process yield and net recovery) and quality (polymer grade and transparency grade) are applied to measure the performance of three PCFP mechanical recycling scenarios. The results are compared against the conventional recycling of PCFP, showing that QRP has a similar process yield (64 % - 66 %) as conventional recycling (66 %). The net recovery indicator shows that in QRP higher recovery rates are achieved for transparent-monolayer PCFP (>90 %) compared to colored-multilayer PCFP (51 % - 91 %). The quality indicators (polymer and transparency grades) demonstrate that the regranulates from QRP have better quality compared to the conventional recycling. To validate the modeling approach, the modeled compositional data is compared with experimental compositional analyses of flakes and regranulates produced by pilot recycling lines. Main conclusions are: (i) although yields do not increase significantly, extra sorting and recycling produces better regranulates' quality (ii) performing a modular MFA gives insights into future recycling scenarios and helps in decision making.
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Affiliation(s)
- Irdanto Saputra Lase
- Laboratory for Circular Process Engineering (LCPE), Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Graaf Karel de Goedlaan 5, B-8500 Kortrijk, Belgium.
| | - Amir Bashirgonbadi
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles, and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 130, B-9052 Zwijnaarde, Belgium; Circular Plastics, Department of Circular Chemical Engineering (CCE), Faculty of Science and Engineering, Maastricht University, Urmonderbaan 22, 6162 Geleen, the Netherlands.
| | - Freek van Rhijn
- Nationaal Testcentrum Circulaire Plastics (NTCP), Duitslanddreef 7, 8447SE Heerenveen, the Netherlands.
| | - Jo Dewulf
- Sustainable Systems Engineering (STEN), Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
| | - Kim Ragaert
- Circular Plastics, Department of Circular Chemical Engineering (CCE), Faculty of Science and Engineering, Maastricht University, Urmonderbaan 22, 6162 Geleen, the Netherlands.
| | - Laurens Delva
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles, and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 130, B-9052 Zwijnaarde, Belgium.
| | - Martijn Roosen
- Laboratory for Circular Process Engineering (LCPE), Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Graaf Karel de Goedlaan 5, B-8500 Kortrijk, Belgium.
| | - Martine Brandsma
- Nationaal Testcentrum Circulaire Plastics (NTCP), Duitslanddreef 7, 8447SE Heerenveen, the Netherlands.
| | - Michael Langen
- HTP GmbH & Co. KG, Maria-Theresia-Alle 35, 52064 Aachen, Germany.
| | - Steven De Meester
- Laboratory for Circular Process Engineering (LCPE), Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Graaf Karel de Goedlaan 5, B-8500 Kortrijk, Belgium.
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Ekner-Grzyb A, Duka A, Grzyb T, Lopes I, Chmielowska-Bąk J. Plants oxidative response to nanoplastic. FRONTIERS IN PLANT SCIENCE 2022; 13:1027608. [PMID: 36340372 PMCID: PMC9630848 DOI: 10.3389/fpls.2022.1027608] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Pollution of the environment with plastic is an important concern of the modern world. It is estimated that annually over 350 million tonnes of this material are produced, wherein, despite the recycling methods, a significant part is deposited in the environment. The plastic has been detected in the industrial areas, as well as farmlands and gardens in many world regions. Larger plastic pieces degraded in time into smaller pieces including microplastic (MP) and nanoplastic particles (NP). Nanoplastic is suggested to pose the most serious danger as due to the small size, it is effectively taken up from the environment by the biota and transported within the organisms. An increasing number of reports show that NP exert toxic effects also on plants. One of the most common plant response to abiotic stress factors is the accumulation of reactive oxygen species (ROS). On the one hand, these molecules are engaged in cellular signalling and regulation of genes expression. On the other hand, ROS in excess lead to oxidation and damage of various cellular compounds. This article reviews the impact of NP on plants, with special emphasis on the oxidative response.
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Affiliation(s)
- Anna Ekner-Grzyb
- Department of Cell Biology, Institute of Experimental Biology, Faculty of Biology, School of Natural Sciences, Adam Mickiewicz University, Poznań, Poland
| | - Anna Duka
- Department of Plant Ecophysiology, Institute of Experimental Biology, Faculty of Biology, School of Natural Sciences, Adam Mickiewicz University, Poznań, Poland
- Department of Mycology and Plant Resistance, Vasily Nazarovich Karazin (VN) Karazin Kharkiv National University, Kharkiv, Ukraine
| | - Tomasz Grzyb
- Department of Rare Earths, Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
| | - Isabel Lopes
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Jagna Chmielowska-Bąk
- Department of Plant Ecophysiology, Institute of Experimental Biology, Faculty of Biology, School of Natural Sciences, Adam Mickiewicz University, Poznań, Poland
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36
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Ronkay F, Molnár B, Szabó E, Marosi G, Bocz K. Water boosts reactive toughening of PET. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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37
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Tenhunen-Lunkka A, Rommens T, Vanderreydt I, Mortensen L. Greenhouse Gas Emission Reduction Potential of European Union's Circularity Related Targets for Plastics. CIRCULAR ECONOMY AND SUSTAINABILITY 2022; 3:475-510. [PMID: 35855295 PMCID: PMC9282144 DOI: 10.1007/s43615-022-00192-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 06/28/2022] [Indexed: 11/17/2022]
Abstract
Current rising concerns about environmental and climate impacts in production, consumption and end-of-life of plastics have led to efforts to switch from linear to circular economy of plastics in Europe. Greenhouse gas emissions are likely to decrease with a transition to a circular system; however, a systematic and integrated perspective on plastics and the carbon cycle is currently missing in the debate on plastics. In this study, a model to estimate greenhouse gas emissions of the current mostly linear plastics value chain of the EU in 2018 and a future scenario, 2025 model, were created. By 2025 if current policy targets are reached, the plastic packaging recycling rate should be 50%, PET-based drinking bottles should include 25% recycled content, 77% collection target for plastic bottles, 10 Mt recyclates should enter the markets, uptake of bio-based plastics is estimated by European bioplastics to increase from current 1 to 1.32% and landfilling will continue to decrease according to the current trend at 3.85%. Total greenhouse gas emissions caused by the current plastics value chain are estimated at 208 million tonnes of CO2-eq. The 2025 model estimates that total plastics value chain emissions will be 182 Mt of CO2-eq. Reduction potential is approximately 26 Mt of CO2-eq or 13%.
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Affiliation(s)
- Anna Tenhunen-Lunkka
- grid.6324.30000 0004 0400 1852VTT Technical Research Centre of Finland Ltd, Tekniikantie 21, 02044 Espoo, Finland
| | - Tom Rommens
- grid.6717.70000000120341548VITO, Boeretang 200, 2400 Mol, Belgium
| | - Ive Vanderreydt
- grid.6717.70000000120341548VITO, Boeretang 200, 2400 Mol, Belgium
| | - Lars Mortensen
- EEA European Environmental Agency, Kongens Nytorv 6, 1050 Copenhagen K, Denmark
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38
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Thomassen G, Van Passel S, Alaerts L, Dewulf J. Retrospective and prospective material flow analysis of the post-consumer plastic packaging waste management system in Flanders. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 147:10-21. [PMID: 35594747 DOI: 10.1016/j.wasman.2022.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 04/28/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
The post-consumer plastic packaging waste management in Flanders was analyzed by performing a retrospective material flow analysis, covering an extensive period from 1985 to 2019. In addition, a prospective material flow analysis of 32 improvement scenarios was performed, based on expected changes in the waste management system. Mass recovery rates were calculated based on different interpretations of the calculation rules. Moreover, various cascading levels were identified to differentiate between the quality level of the secondary applications. The mass recovery rate including only recycling evolved from a value of 0% in 1985 to 31% in 2019 and could be increased to 36-62% depending on the improvement scenario selected. However, the different interpretations of the calculation rules led to a variation of up to 20 and 41% on this mass recovery rates for the retrospective and prospective analysis, respectively. The introduction of monostream recycling for additional post-consumer plastic packaging flows, such as low-density polyethylene, did not lead to increasing mass recovery rates, if no differentiation for the cascading levels was made. The Belgian recycling target of 65% for 2023 will be challenging if the strictest calculation method needs to be followed or if the improvements in the Flemish post-consumer plastic packaging waste system do not follow the best-case collection scenarios under the given assumptions. To harmonize the calculation and monitoring of these targets, clear calculation rules need to be accompanied with a harmonized monitoring system over the entire waste management system.
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Affiliation(s)
- Gwenny Thomassen
- Department of Engineering Management, University of Antwerp, Prinsstraat 13, 2000 Antwerp, Belgium; Research Group Sustainable Systems Engineering (STEN), Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
| | - Steven Van Passel
- Department of Engineering Management, University of Antwerp, Prinsstraat 13, 2000 Antwerp, Belgium
| | - Luc Alaerts
- Sustainability Assessments of Material Life Cycles, Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium
| | - Jo Dewulf
- Research Group Sustainable Systems Engineering (STEN), Ghent University, Coupure Links 653, 9000 Ghent, Belgium
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39
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Venkatachalam V, Pohler M, Spierling S, Nickel L, Barner L, Endres H. Design for Recycling Strategies Based on the Life Cycle Assessment and End of Life Options of Plastics in a Circular Economy. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Venkateshwaran Venkatachalam
- Institute of Plastics and Circular Economy Leibniz Universität Hannover An der Universität 2 Garbsen 30823 Germany
| | - Merlin Pohler
- Institute of Plastics and Circular Economy Leibniz Universität Hannover An der Universität 2 Garbsen 30823 Germany
| | - Sebastian Spierling
- Institute of Plastics and Circular Economy Leibniz Universität Hannover An der Universität 2 Garbsen 30823 Germany
| | - Louisa Nickel
- Institute of Plastics and Circular Economy Leibniz Universität Hannover An der Universität 2 Garbsen 30823 Germany
| | - Leonie Barner
- Centre for a Waste‐Free World Faculty of Science, School of Chemistry and Physics Queensland University of Technology 2 George Street Brisbane QLD 4000 Australia
| | - Hans‐Josef Endres
- Institute of Plastics and Circular Economy Leibniz Universität Hannover An der Universität 2 Garbsen 30823 Germany
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40
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Wu S, Gong X, Wang Y, Cao J. Consumer Cognition and Management Perspective on Express Packaging Pollution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19084895. [PMID: 35457761 PMCID: PMC9029519 DOI: 10.3390/ijerph19084895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/31/2022] [Accepted: 04/11/2022] [Indexed: 02/05/2023]
Abstract
Consumer awareness of environmental protection is getting stronger. However, with the development of the logistics industry, the environmental pollution caused by express packaging has become increasingly severe. Therefore, it is of great importance to know consumer cognition and willingness about how to reduce the express packaging pollution. In this study, through the analysis of 561 questionnaires, we analyze the impact of consumer evaluation of recyclable express packaging and green express packaging on responsibility awareness of government, logistics enterprises, and e-commerce corporates, and analyze whether there is a positive correlation between consumer evaluation and reducing environmental pressure. We find that consumers are willing to use recyclable express packaging and green express packaging, especially the latter. Moreover, the government is supposed to play a central role in solving environmental pollution problems caused by express packaging. It is recommended that the government proposes some corresponding solutions, such as introducing a packaging tax policy, setting up an environmental fund, and developing environment-friendly packaging materials. Meanwhile, consumers expect logistics enterprises and e-commerce companies to cooperate with the government actively and switch to using environment-friendly express packaging in a timely manner.
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Affiliation(s)
- Sisi Wu
- School of Management, Zhejiang University of Technology, Hangzhou 310023, China; (S.W.); (X.G.); (J.C.)
| | - Xuan Gong
- School of Management, Zhejiang University of Technology, Hangzhou 310023, China; (S.W.); (X.G.); (J.C.)
| | - Yunfei Wang
- School of Management, Zhejiang University of Technology, Hangzhou 310023, China; (S.W.); (X.G.); (J.C.)
- Correspondence:
| | - Jian Cao
- School of Management, Zhejiang University of Technology, Hangzhou 310023, China; (S.W.); (X.G.); (J.C.)
- Center for Global & Regional Environmental Research, The University of Iowa, Iowa City, IA 52242, USA
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41
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Increasing the Circularity of Packaging along Pharmaceuticals Value Chain. SUSTAINABILITY 2022. [DOI: 10.3390/su14084715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Pharmaceutical packaging is a complex group of products, the main purpose of which is to protect the medicine and forward information. Pharmaceutical packaging waste is generated and accumulated along the various phases and practices of the value chain. In general, the amount of packaging has been growing during the increasing political pressure to reduce waste and to increase the circulation of materials. The goals and solutions are expected to be found in the circular economy; however, the literature on circular pharmaceutical packaging is lacking. This study explores the key factors when promoting the circularity of pharmaceutical packaging along its value chain. This was conducted by reviewing the legislation, elaborating the value chain and analysing the data from focus group discussions with stakeholders. The results show that various barriers, such as legislation, a lack of information or interaction between stakeholders, but also rigid practices, block product design for circularity. In the developing circularity of packaging, the causal links along the value chain must be understood. Chemical recycling technologies are expected to resolve the challenges of maintaining clean cycles. Further studies are needed to demonstrate the environmental benefits of increasing circularity along the value chain of pharmaceutical packaging.
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42
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Correa CA, De Oliveira MA, Jacinto C, Mondelli G. Challenges to reducing post-consumer plastic rejects from the MSW selective collection at two MRFs in São Paulo city, Brazil. JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT 2022; 24:1140-1155. [PMID: 35317222 PMCID: PMC8931185 DOI: 10.1007/s10163-022-01387-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
The present study is concerned with an overview of the main aspects of the selective collection from the municipal solid waste in São Paulo City and the limitations of its two automated Material Recovery Facilities (MRFs) to tackle the problem of reducing recyclable plastic waste sent to landfills as rejects. The research aimed to characterize the composition of screened mass flows of as-received mixes from the selective collection at the two MRFs through in situ random collection campaigns. The results of the gravimetric analysis have shown that both MRFs provided higher recovery yields (> 40%) for paper, cardboard, Tetrapack®, ferrous and non-ferrous metals (aluminium), akin to some post-consumer plastics (PET, HDPE/LDPE and PP) that ranged from 38% for PP up to 89% for HDPE, Losses in recovery yields of recyclable plastics after the screening process resulted from lack of clear resin label identification, inefficient materials sortation by households and poor recognition capabilities of the MRFs screening devices to target and segregate specific types of plastics such as PS and vinylic. Packaging design complexity, multi-layered material diversity, and food contaminated post-consumer packaging pose further challenges to improve the plastics recovery capabilities of the two MRFs.
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Affiliation(s)
- Carlos Alberto Correa
- Strategic Nucleus for Waste Revaluation-Federal University at ABC, Santo André, SP Brazil
| | - Marcio Adilson De Oliveira
- Engineering, Modelling and Applied Social Sciences Centre, Federal University at ABC, Santo André, SP Brazil
| | - Christiane Jacinto
- Engineering, Modelling and Applied Social Sciences Centre, Federal University at ABC, Santo André, SP Brazil
| | - Giulliana Mondelli
- Engineering, Modelling and Applied Social Sciences Centre, Federal University at ABC, Santo André, SP Brazil
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Avsar Y, Uksal F, Bilgili L. Environmental gains in the collection of packaging waste obtained in Uskudar district by changing the collection type. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2022; 72:281-293. [PMID: 34432608 DOI: 10.1080/10962247.2021.1972054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 07/10/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
The collection of packaging wastes separately from domestic wastes is a legal requirement and has become a necessity due to the need for raw materials today. Due to the legislative requirements, disruptions in practice constitute an obstacle to create a successful waste management policy. The subject of this study is to provide a system that will help the administrators of the district municipalities who want to collect the packaging wastes with their own means. In Uskudar municipality defined as a pilot area, environmental gains have been achieved by collecting packaging wastes separately from domestic wastes in two different days. The results of the collection of packaging wastes from households separately from domestic wastes were analyzed by separate collection days of district municipalities. Waste characterization studies are carried out, and the evaluation is presented. In this study, it was determined that the environmental gains obtained by changing only the packaging waste collection days yielded important results. The classical collection model, Uskudar Model and the effect of not collecting packaging wastes on ecosystem and people were examined by life cycle analysis.Implications: The importance of the environmental contribution of the proper packaging waste collection system. Environmental contributions provided by recycling only by changing the collection system. Revealing the environmental contributions of the packaging waste collection system through life cycle analysis.
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Affiliation(s)
- Yasar Avsar
- Civil Engineering Faculty Environmental Engineering Department, Yildiz Technical University, Istanbul, Turkey
| | - Fatma Uksal
- Civil Engineering Faculty Environmental Engineering Department, Yildiz Technical University, Istanbul, Turkey
| | - Levent Bilgili
- Maritime Faculty Department of Naval Architecture and Marine Engineering, Bandirma Onyedi Eylul University, Balikesir, Turkey
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44
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Management of Plastic Waste and a Circular Economy at the End of the Supply Chain: A Systematic Literature Review. ENERGIES 2022. [DOI: 10.3390/en15030976] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This article aims to describe the current state of research on plastic waste management as a circular economy practice at the end of the supply chain. The methodological strategy chosen was a systematic literature review. The articles selected from the Web of Science and Scopus databases were screened, and the research corpus consisted of 201 articles published in journals between 2014 and 2021. The results present 13 study categories, showing topics such as pyrolysis, business models, Industry 4.0, and energy generation. The insertion of Industry 4.0 technologies is still in its initial stages, comprising mainly the generation of inputs to reuse waste for 3D printers’ materials. Regarding energy generation, the insertion of processes such as pyrolysis for fuel generation stands out. The proposed discussion in this article suggests a circular ecosystem in which wastes follow a reuse flow according to their properties; incineration can be an option depending on the stage and benefits generated from the removal of plastic waste from the ecosystem. The highlighted issue is the scalability of the developed processes in the research, which is only possible if the state, universities, and civil society integrate efforts in the construction of a circular ecosystem infrastructure for waste management.
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45
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Andreasi Bassi S, Tonini D, Saveyn H, Astrup TF. Environmental and Socioeconomic Impacts of Poly(ethylene terephthalate) (PET) Packaging Management Strategies in the EU. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:501-511. [PMID: 34875164 DOI: 10.1021/acs.est.1c00761] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Plastics are a challenge for the circular economy due to their overall low recycling rate and high dependency on primary resources. This study analyzes the EU demand for poly(ethylene terephthalate) (PET) packaging from 2020 to 2030 and quantifies the potential environmental and societal savings by changing the waste management and consumption patterns compared with business-as-usual practices. The results of the life-cycle assessment and life-cycle costing show that a maximum of 38 Mt of CO2-eq and 34 kt of PM2.5-eq could be saved with a more efficient waste management system and a robust secondary material market while also avoiding 8.3 billion EUR2019 in societal costs (cumulative 2020-2030). However, limiting annual PET consumption growth appears to have a similar profound effect on improving the efficiency of waste management systems: 35 Mt of CO2-eq, 31 kt of PM2.5-eq, and 25 billion MEUR2019 societal costs could be saved, simply by keeping EU consumption of PET constant.
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Affiliation(s)
- Susanna Andreasi Bassi
- Department of Environmental Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
- European Commission, Joint Research Centre, Edificio Expo, Calle Inca Garcilaso 3, 41092 Seville, Spain
| | - Davide Tonini
- European Commission, Joint Research Centre, Edificio Expo, Calle Inca Garcilaso 3, 41092 Seville, Spain
| | - Hans Saveyn
- European Commission, Joint Research Centre, Edificio Expo, Calle Inca Garcilaso 3, 41092 Seville, Spain
| | - Thomas Fruergaard Astrup
- Department of Environmental Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
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46
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Towards Higher Quality of Recycled Plastics: Limitations from the Material’s Perspective. SUSTAINABILITY 2021. [DOI: 10.3390/su132313266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The increasing consumption of plastics and plastic products results in correspondingly substantial volumes of waste, which poses considerable environmental burdens. With the ongoing environmental actions, the application of circular economy on this waste stream is becoming inevitable. In this paper, the topics of plastics recycling, circular economy on plastics, and challenges to plastic waste recycling are critically reviewed. In the first part of this paper, the development of research on plastic recycling was viewed from 1950 until 2020 using the scientific database Web of Science, and 682 related studies were found and used to assess the changing research priorities along that timeline. The following sections discuss the potentials and requirements to enhance the quality of the produced recycled plastic, in connection with the factors that currently limit it. In conclusion, the quality of recycled plastic is generally determined by the homogeneity of the recovered plastic feed. There are various strategies which could be implemented to overcome the hindrances identified in the paper and to improve the quality of the recycled plastic, such as working on enhanced product designs for minimised waste heterogeneity and controlling the materials’ degree of contamination by applying advanced sorting.
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Sun D, Xie D, Jiang P, Xie J, Xu Y, Ren Y. Simulating the Effect of Mixed Subsidy Policies on Urban Low-Value Recyclable Waste in China: A System Dynamics Approach. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182010636. [PMID: 34682382 PMCID: PMC8535339 DOI: 10.3390/ijerph182010636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 11/16/2022]
Abstract
Low-value recyclable waste accounts for a large portion of urban waste output in many modern cities. The improper management and disposal of LVRW result in environmental pollution and a waste of resources. Given the characteristics of a high recovery cost and low recovery income of low-value recyclables, it is difficult to obtain a satisfactory waste disposal effect by completely relying on the market mechanism. It is thus necessary for the government to implement effective subsidies for multiple subjects in the urban waste recycling system (UWRS). This study examines the independent roles of four subsidy policies-subsidy to the third-party waste disposal institutions, subsidy to a state-owned waste disposal institution, R&D subsidy for green technology, and subsidy for government publicity-and develops a system dynamics model to verify the performance of the UWRS under different combinations of subsidy-based policies under multiple scenarios. Data on urban waste disposal for Guangzhou from 2019 and 2020 were used to validate and simulate the model. A sensitivity analysis of the main exogenous variables was carried out, and the conclusions are as follows: (1) On the premise of a fixed subsidy capital pool, a mixed subsidy policy produced the best impact on the UWRS. (2) The total subsidy needed to reach a certain threshold; otherwise, the mixed subsidy policy did not improve the UWRS. The total subsidy produced diminishing returns once it had exceeded the threshold. (3) Appropriately reducing subsidies for the third-party waste disposal institutions within a reasonable range does not affect the performance of the UWRS. (4) The effect of government publicity has short-term advantages, while the long-term potential of green technology is greater. Multi-agent coordination and the guidance of the market mechanism are important priorities in the design of subsidy-based policies. In addition, the trade-off between subjects needs attention, and a plan for mixed subsidy policies needs to be designed and implemented according to the response periods of different policies. The research here provides theoretical support for the government for designing subsidy-based policies.
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Affiliation(s)
- Dongshi Sun
- School of Information and Business Management, Dalian Neusoft University of Information, Dalian 116023, China; (D.S.); (Y.X.)
| | - Danlan Xie
- Hangzhou College of Commerce, Zhejiang Gongshang University, Hangzhou 311599, China;
| | - Peng Jiang
- School of Business, Shandong University, Weihai 264209, China;
- Correspondence:
| | - Jingci Xie
- School of Management, Shandong University, Jinan 250100, China;
| | - Yang Xu
- School of Information and Business Management, Dalian Neusoft University of Information, Dalian 116023, China; (D.S.); (Y.X.)
| | - Yining Ren
- School of Business, Shandong University, Weihai 264209, China;
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Beghetto V, Sole R, Buranello C, Al-Abkal M, Facchin M. Recent Advancements in Plastic Packaging Recycling: A Mini-Review. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4782. [PMID: 34500870 PMCID: PMC8432502 DOI: 10.3390/ma14174782] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/12/2021] [Accepted: 08/19/2021] [Indexed: 01/11/2023]
Abstract
Today, the scientific community is facing crucial challenges in delivering a healthier world for future generations. Among these, the quest for circular and sustainable approaches for plastic recycling is one of the most demanding for several reasons. Indeed, the massive use of plastic materials over the last century has generated large amounts of long-lasting waste, which, for much time, has not been object of adequate recovery and disposal politics. Most of this waste is generated by packaging materials. Nevertheless, in the last decade, a new trend imposed by environmental concerns brought this topic under the magnifying glass, as testified by the increasing number of related publications. Several methods have been proposed for the recycling of polymeric plastic materials based on chemical or mechanical methods. A panorama of the most promising studies related to the recycling of polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and polystyrene (PS) is given within this review.
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Affiliation(s)
- Valentina Beghetto
- Department of Molecular Sciences and Nanosystems, University Ca’Foscari of Venice, Via Torino 155, 30172 Mestre, Italy; (R.S.); (C.B.); (M.A.-A.); (M.F.)
- Crossing S.r.l., Viale della Repubblica 193/b, 31100 Treviso, Italy
| | - Roberto Sole
- Department of Molecular Sciences and Nanosystems, University Ca’Foscari of Venice, Via Torino 155, 30172 Mestre, Italy; (R.S.); (C.B.); (M.A.-A.); (M.F.)
| | - Chiara Buranello
- Department of Molecular Sciences and Nanosystems, University Ca’Foscari of Venice, Via Torino 155, 30172 Mestre, Italy; (R.S.); (C.B.); (M.A.-A.); (M.F.)
| | - Marco Al-Abkal
- Department of Molecular Sciences and Nanosystems, University Ca’Foscari of Venice, Via Torino 155, 30172 Mestre, Italy; (R.S.); (C.B.); (M.A.-A.); (M.F.)
| | - Manuela Facchin
- Department of Molecular Sciences and Nanosystems, University Ca’Foscari of Venice, Via Torino 155, 30172 Mestre, Italy; (R.S.); (C.B.); (M.A.-A.); (M.F.)
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The Critical Importance of Adopting Whole-of-Life Strategies for Polymers and Plastics. SUSTAINABILITY 2021. [DOI: 10.3390/su13158218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Plastics have been revolutionary in numerous sectors, and many of the positive attributes of modern life can be attributed to their use. However, plastics are often treated only as disposable commodities, which has led to the ever-increasing accumulation of plastic and plastic by-products in the environment as waste, and an unacceptable growth of microplastic and nanoplastic pollution. The catchphrase “plastics are everywhere”, perhaps once seen as extolling the virtues of plastics, is now seen by most as a potential or actual threat. Scientists are confronting this environmental crisis, both by developing recycling methods to deal with the legacy of plastic waste, and by highlighting the need to develop and implement effective whole-of-life strategies in the future use of plastic materials. The importance and topicality of this subject are evidenced by the dramatic increase in the use of terms such as “whole of life”, “life-cycle assessment”, “circular economy” and “sustainable polymers” in the scientific and broader literature. Effective solutions, however, are still to be forthcoming. In this review, we assess the potential for implementing whole-of-life strategies for plastics to achieve our vision of a circular economy. In this context, we consider the ways in which given plastics might be recycled into the same plastic for potential use in the same application, with minimal material loss, the lowest energy cost, and the least potential for polluting the environment.
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Hossain MU, Ng ST, Dong Y, Amor B. Strategies for mitigating plastic wastes management problem: A lifecycle assessment study in Hong Kong. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 131:412-422. [PMID: 34247139 DOI: 10.1016/j.wasman.2021.06.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 06/09/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
Considering the volume of plastic generation and its persistence in nature, the management of plastic wastes has gained increasing attention globally. To select the most environmentally sustainable solution, insights in the environmental impacts of different management strategies are crucial. This study thus aimed to evaluate different plastic waste management strategies such as mechanical recycling, incineration, industrial incineration, construction and landfill, and exemplified with potential case demonstrations in Hong Kong. The environmental impacts of the developed strategies are comparatively evaluated by the lifecycle assessment (LCA) technique in order to identify the most environmentally preferable strategy. The LCA results indicate that industrial incineration is the most potential preferential strategy for Hong Kong, as it can potentially consume the generated waste locally and substitute the imported coal for the cement industry. Mechanical recycling is the second preferential strategy for the city, as it conserves secondary resources significantly. Grate incineration for generating electricity is the third preferable solution, while the use of recycled plastics in construction may not be a benign environmental strategy for Hong Kong. The findings of this study could help policy makers to design strategic direction for environmentally sustainable management of plastic wastes locally based on the circular economy principle.
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Affiliation(s)
- Md Uzzal Hossain
- Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - S Thomas Ng
- Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong.
| | - Yahong Dong
- School of Electromechanical Engineering, Qingdao University of Science and Technology, No. 99 Songling Road, Qingdao, China; Qingdao Center for National Climate Change Strategy Research and Carbon Market Capacity Building, Qingdao University of Science and Technology, No. 99 Songling Road, Qingdao, China
| | - Ben Amor
- Interdisciplinary Research Laboratory on Sustainable Engineering and Ecodesign (LIRIDE), Department of Civil and Building Engineering, Université de Sherbooke, 2500 boul. de l'Université, Sherbrooke, Québec, J1K 2R1, Canada
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