在长期运行期间饮用水输送管道的老化作为纳米和微塑料的潜在来源
Joanna Świetlik1, Marta Magnucka1
1Adam Mickiewicz University, Faculty of Chemistry, Department of Analytical and Environmental Chemistry, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland.
International journal of hygiene and environmental health
|September 22, 2024
概括
饮用水系统中的PE和PVC等老化塑料管道释放微塑料 (MP) 和纳米塑料 (NP). 更小的管道和更长时间的使用增加了颗粒的释放,给消费者带来了风险.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 公共卫生 公共卫生
背景情况:
- 塑料管道 (PE,PVC) 广泛用于饮用水分配.
- 这些材料的老化和降解会导致颗粒的释放.
- 微塑料 (MP) 和纳米塑料 (NP) 是饮用水中令人担忧的新兴污染物.
研究的目的:
- 调查老旧的聚乙烯 (PE) 和聚乙烯 (PVC) 管道释放的MP和NP.
- 评估老化和运行条件对粒子形成和释放的影响.
- 识别水分网络中的塑料颗粒污染的脆弱点.
主要方法:
- 在饮用水网络中长期运行后对PE和PVC管道进行全面研究.
- 分析管道表面退化,聚合物链退化和结构变化.
- 释放的粒子的表征以确定尺寸分布 (MP和NP范围).
主要成果:
- 可降解的聚合物,特别是PE和PVC管道,是MP和NP的重要来源.
- 塑料管道迅速老化,表面损伤 (裂,剥离) 随着时间的推移和特定的操作条件而增加.
- 在直径较小的管道中,颗粒的释放更为明显,影响网络极端的消费者.
结论:
- 陈旧的PE和PVC管道是饮用水中MP和NP的大量且经常被忽视的来源.
- 水质监测应包括评估来自配送基础设施的塑料颗粒污染.
- 制造商应该考虑管道材料的可降解性和颗粒释放潜力.
更多相关视频
05:48Sampling, Identification and Characterization of Microplastics Release from Polypropylene Baby Feeding Bottle during Daily Use
Published on: July 24, 2021
5.6K
08:21Forming Micro-and Nano-Plastics from Agricultural Plastic Films for Employment in Fundamental Research Studies
Published on: July 27, 2022
4.1K
相关概念视频
Microbial Corrosion
111
Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...
111
Bioplastics
73
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
73
Microbial Bioremediation of Plastics
142
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
142
