利用超声波法降低消费后塑料薄膜废弃物中有机和无机污染

IF 4.2 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Victor S. Cecon, Mita Munshi, Shahnaz Mukta, Keith L. Vorst, Greg W. Curtzwiler
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引用次数: 0

摘要

消费后的塑料薄膜废弃物通常携带有机和无机污染物,对回收过程构成挑战,并影响回收产品的质量。通过清洗这种一次性塑料薄膜(supf)有效去除污染物的程序可以解决环境和废物管理问题。本研究比较了不同洗涤技术在减少SUPF污染方面的效率。为了评估每种洗涤技术的效果,从材料回收设施收集的膜样品分别暴露于摩擦、超声波辅助和两种洗涤的组合中。热分析表明,聚合物的熔融温度、结晶温度和结晶度不受洗涤方法的影响,证明了方法的适用性。共聚焦激光扫描显微镜图像显示,洗涤结果使样品表面更清洁。与单独的摩擦和超声波洗涤程序相比,在联合洗涤处理期间减少91%的灰分表明方法效率高。通过减少特征污染物红外波段(3600-3000,1750-1600和1100-1000 cm−1),进一步验证了这一点。每次洗涤后,supf中的镉、铬、汞和铅等相关元素符合包装产品的规定(100 ppm)。该研究表明,新型超声洗涤减少了更多的污染,而不是摩擦,洗涤时间短,无表面活性剂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Utilization of Ultrasonication as a Method of Reducing Organic and Inorganic Contamination in Post-Consumer Plastic Film Waste

Post-consumer plastic film waste often carries organic and inorganic contaminants that challenge recycling processes and affect the quality of recycled products. An effective contaminant removal procedure through washing such single-used plastic films (SUPFs) can address environmental and waste management concerns. This study compares the efficiency of different washing techniques in reducing SUPF contamination. To evaluate the efficacy of each washing technique, film samples collected from material recovery facilities are individually exposed to friction, ultrasonic-assisted, and a combination of both washes. Thermal analysis indicates that the polymers' melting temperature, crystallization temperature, and crystallinity remain unaffected by the washing methods, demonstrating method aptness. Confocal laser scanning microscope images show that washing results in a cleaner sample surface. 91% ash reduction during the combined wash treatment indicates a high method efficiency compared to the individual friction and ultrasonic wash procedures. This is further validated by reducing characteristic contaminant IR bands (3600–3000, 1750–1600, and 1100–1000 cm−1). Elements of concern such as Cd, Cr, Hg, and Pb in SUPFs after each washing technique applied conform with regulations (<100 ppm) for packaging products. This research shows the novel ultrasonic washing reduces more contamination than friction with shorter wash times and no surfactants.

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来源期刊
Macromolecular Materials and Engineering
Macromolecular Materials and Engineering 工程技术-材料科学:综合
CiteScore
7.30
自引率
5.10%
发文量
328
审稿时长
1.6 months
期刊介绍: Macromolecular Materials and Engineering is the high-quality polymer science journal dedicated to the design, modification, characterization, processing and application of advanced polymeric materials, including membranes, sensors, sustainability, composites, fibers, foams, 3D printing, actuators as well as energy and electronic applications. Macromolecular Materials and Engineering is among the top journals publishing original research in polymer science. The journal presents strictly peer-reviewed Research Articles, Reviews, Perspectives and Comments. ISSN: 1438-7492 (print). 1439-2054 (online). Readership:Polymer scientists, chemists, physicists, materials scientists, engineers Abstracting and Indexing Information: CAS: Chemical Abstracts Service (ACS) CCR Database (Clarivate Analytics) Chemical Abstracts Service/SciFinder (ACS) Chemistry Server Reaction Center (Clarivate Analytics) ChemWeb (ChemIndustry.com) Chimica Database (Elsevier) COMPENDEX (Elsevier) Current Contents: Physical, Chemical & Earth Sciences (Clarivate Analytics) Directory of Open Access Journals (DOAJ) INSPEC (IET) Journal Citation Reports/Science Edition (Clarivate Analytics) Materials Science & Engineering Database (ProQuest) PASCAL Database (INIST/CNRS) Polymer Library (iSmithers RAPRA) Reaction Citation Index (Clarivate Analytics) Science Citation Index (Clarivate Analytics) Science Citation Index Expanded (Clarivate Analytics) SciTech Premium Collection (ProQuest) SCOPUS (Elsevier) Technology Collection (ProQuest) Web of Science (Clarivate Analytics)
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