Circular Economy and Sustainability, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 12, 2024
Language: Английский
Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 379, P. 124752 - 124752
Published: March 5, 2025
Language: Английский
Citations
1
Ecological Informatics, Journal Year: 2025, Volume and Issue: unknown, P. 103020 - 103020
Published: Jan. 1, 2025
Language: Английский
Citations
0
Waste Management, Journal Year: 2025, Volume and Issue: 195, P. 264 - 274
Published: Feb. 10, 2025
Flexible plastic packaging (FPP) constitutes one of the largest post-consumer streams processed in recycling facilities. To address key challenges its sorting and quality control, this study developed tested a classification procedure based on hyperspectral imaging (HSI), combined with machine learning. The aim was to automatically detect contaminants (i.e., other polymers materials) within polypropylene (PP) stream FPP waste (FPPW). Hyperspectral images representative FPPW samples PP were acquired short-wave infrared range (SWIR: 1000-2500 nm) preprocessed using different combinations algorithms emphasize their spectral characteristics. Principal component analysis (PCA) applied as exploratory data followed by application hierarchical model, partial least squares-discriminant (Hi-PLS-DA), differentiate between materials considered contaminants, including polyethylene, polyester, polyethylene terephthalate, polystyrene, cellulose, polyurethane, aluminum multilayer films. results showed accuracy 87.5 %, 147 out 168 flakes correctly identified, verified Fourier transform-infrared (FT-IR) spectroscopy, demonstrating model robust performance distinguishing from materials. Assuming all identified particles are properly sorted, is predicted achieve Recovery 98.2 % weight for PP, indicating minimal material losses, Grade 94.4 weight, representing significant improvement compared 77.2 initial feed stream. This work demonstrated effectiveness HSI Hi-PLS-DA developing an automatic efficient and/or control process FPPW, minor errors occurring filaments flakes.
Language: Английский
Citations
0
Published: Feb. 26, 2025
Multilayer packaging, extensively used in the food, beverage, and cosmetics industries, offers excellent protection durability by combining materials such as paper, plastic, aluminum. However, its complex structure creates significant challenges recycling, particularly separating layers. This review, conducted through a scoping analysis of peer-reviewed literature obtained from databases Google Scholar, PubMed, ResearchGate, reviews limitations current recycling technologies, including mechanical, chemical, solvent-based, enzymatic methods highlights experimental potential microbial degradation future solution. It also explores innovative approaches, upcycling, biodegradable alternatives, split-layer which reduce adhesive use simplify recycling. Legislative frameworks policy incentives are analyzed to underscore their role driving technological advancements fostering industry collaboration. Findings emphasize absence fully viable solution with regard for multilayer packaging under existing economic constraints. Although “Design-for-Recycling” emerging offer promising long-term strategies, temporary measures advanced incineration or regulated landfilling may still be required. Moving forward, innovation supported robust policies collaborative efforts, is essential align global sustainability goals contribute development circular economy.
Language: Английский
Citations
0
Polymers, Journal Year: 2025, Volume and Issue: 17(5), P. 700 - 700
Published: March 6, 2025
The traditional plastic sorting process primarily relies on manual operations, which are inefficient, pose safety risks, and result in suboptimal separation efficiency for mixed waste plastics. Near-infrared (NIR) spectroscopy, with its rapid non-destructive analytical capabilities, presents a promising alternative. However, the analysis of NIR spectra is often complicated by overlapping peaks complex data patterns, limiting direct applicability. This study establishes comprehensive machine learning-based spectroscopy model to distinguish polypropylene (PP) at different aging stages. A dataset was collected from PP samples subjected seven simulated stages, followed construction classification analyze these spectral variations. confirmed using Fourier-transform infrared (FTIR). Mechanical property analysis, including tensile strength elongation break, revealed gradual decline prolonged aging. After 40 days accelerated aging, break dropped approximately 30%, retaining only about one-sixth original mechanical performance. Furthermore, various preprocessing methods were evaluated identify most effective technique. combination second derivative method linear -SVC achieved accuracy 99% precision 100%. demonstrates feasibility accurate identification thereby enhancing quality recycled plastics promoting automated, precise, sustainable recycling processes.
Language: Английский
Citations
0
Recycling, Journal Year: 2025, Volume and Issue: 10(2), P. 41 - 41
Published: March 11, 2025
The accumulation of plastic waste poses a significant environmental challenge, necessitating sustainable solutions. This study investigates the potential recycling plastics for use in construction industry, emphasizing their integration into building materials and components. Earlier was excessively studied as an ingredient concrete composites, roads, other research. However, this study, recycled is assessed sole material structural products. Raw plastics, including high-density polyethylene, Low-Density Polyethylene, polypropylene, polyolefin, samicanite, virgin were analyzed through mechanical extrusion, properties to determine feasibility applications. In extrusion process, combined with engineered dyes, investigated comprehensive testing per ASTM standards obtain desired construction. Advanced characterization techniques, SEM, FTIR, TGA, employed evaluate chemical composition, thermal stability, impurities these collected from municipal waste. A gas emission analysis during confirmed minimal impact, validating sustainability process. Municipal has considerable quantum HDPE, PP, LDPE, which considered research total 140 samples tested across shear, flexural, tensile, compression categories: 35 each. results showed that rHDPE PP had good tensile strength shear resistance. findings pave way developing cost-effective, durable, eco-friendly materials, such rebars, corrugated sheet, blocks, products, contributing conservation resource efficiency Industry.
Language: Английский
Citations
0
Textile Research Journal, Journal Year: 2025, Volume and Issue: unknown
Published: March 12, 2025
The growing emphasis on sustainability in the textile industry demands innovative solutions for material sourcing and production processes. This study investigates melt spinning of high-quality polypropylene monofilaments derived from post-consumer waste, focusing recycling food packaging plastic waste collection system Germany. research explores potential pathways to produce that maintain mechanical properties required applications. Five commercially available materials were examined, including a homopolymer (hPP) four recycled variants obtained waste. Prior processing, underwent comprehensive thermoanalytical, rheological, visual assessments characterize their thermal stability, flow behavior, appearance, respectively. melt-spinning process was carried out by producing evaluating basic processability each under various parameters. physical monofilaments—including tensile strength elongation—were thoroughly analyzed. Key findings demonstrate can yield with comparable those virgin materials, highlighting its advanced applications industry. provides valuable insights into performance limitations modern processes, contributing efforts toward more sustainable use manufacturing.
Language: Английский
Citations
0
Sustainability, Journal Year: 2025, Volume and Issue: 17(6), P. 2636 - 2636
Published: March 17, 2025
The utilization of recycled materials has emerged as a pivotal strategy for mitigating resource depletion and reducing carbon emissions in the construction industry. However, existing reviews predominantly focus on specific technical aspects, often overlooking interdisciplinary complexities associated with systems engineering challenge. This study systematically 1533 documents from Web Science Core Collection, integrating quantitative qualitative analytical approaches to assess current state future trajectory field, thereby addressing research gaps. findings highlight substantial evolution building waste recovery multifaceted domain encompassing value assessment, circular economy principles, advanced technologies, collaboration, long-term societal benefits. identifies six key themes materials: life cycle biological natural materials, concrete, asphalt infrastructure, demolition waste, environmental impacts composite factors. Furthermore, is categorized into two primary dimensions: strategies technological tools. analysis directions underscores potential AI-driven innovations their role enhancing human living environments. developing countries continue face critical challenges, necessitating further integration knowledge exchange. Finally, this proposes comprehensive systematic disciplinary framework that offers valuable insights strategic planning advancements field.
Language: Английский
Citations
0
Materials Horizons, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
The growing plastic pollution crisis demands novel approaches, with innovative materials that mimic robotic behaviors emerging as a promising solution.
Language: Английский
Citations
0
Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 283 - 338
Published: Jan. 1, 2025
Language: Английский
Citations
0