Kim Namyeon, Kim Da-Yeon, Chang Yunsoo, Jung Eui-Man, Lee Seung-Woo, Lee Eun-Hee
Department of Microbiology, Pusan National University, 2 Busandaehak-ro 63 Beon-gil, Geumjeong-gu, Busan, Republic of Korea.
Department of Fine Chemistry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, Republic of Korea.
Chemosphere. 2025 May;377:144351. doi: 10.1016/j.chemosphere.2025.144351. Epub 2025 Mar 27.
The extensive presence of nanoplastics has raised concerns about their effects on ecosystems and human health. Because of the heightened ecological and biological risks posed by nanoplastics, effective removal strategies for these particles are essential. This study focuses on the use of additive manufacturing techniques to fabricate a three-dimensional (3D) structure with integrated powdered activated carbon (PAC) as an active adsorbent for the removal of various types of polymer nanoplastics. The 3D-printed porous PAC scaffold was characterized using various analysis methods, and its adsorption kinetics and mechanisms for polystyrene (PS) nanoplastics were elucidated. The 3D PAC's versatility was verified against several other nanoplastics, including polyethylene terephthalate, low-density polyethylene, polypropylene, and polyvinyl chloride. The results demonstrated that the 3D PAC scaffold effectively adsorbs PS nanoplastics through pore filling and chemical processes and that the adsorption exhibits pseudo-first-order kinetics and conforms to the Langmuir isotherm model. The 3D PAC maintained its adsorption performance under various environmental conditions and exhibited promising results when used to remove nanoplastics from real freshwater samples. This research demonstrates the potential of 3D-printed PACs to address the growing challenge of plastic pollution.
纳米塑料的广泛存在引发了人们对其对生态系统和人类健康影响的担忧。由于纳米塑料带来的生态和生物风险加剧，针对这些颗粒的有效去除策略至关重要。本研究聚焦于利用增材制造技术制造一种三维（3D）结构，该结构集成了粉末状活性炭（PAC）作为活性吸附剂，用于去除各类聚合物纳米塑料。采用多种分析方法对3D打印的多孔PAC支架进行了表征，并阐明了其对聚苯乙烯（PS）纳米塑料的吸附动力学和机制。针对包括聚对苯二甲酸乙二酯、低密度聚乙烯、聚丙烯和聚氯乙烯在内的其他几种纳米塑料，验证了3D PAC的通用性。结果表明，3D PAC支架通过孔隙填充和化学过程有效吸附PS纳米塑料，且吸附呈现准一级动力学，符合朗缪尔等温线模型。3D PAC在各种环境条件下均保持其吸附性能，用于从实际淡水样品中去除纳米塑料时展现出了良好的效果。这项研究证明了3D打印PAC在应对日益严峻的塑料污染挑战方面的潜力。
