Vujić Maja, Srebro Tijana Marjanović, Vasiljević Sanja, Simetić Tajana, Molnar Jazić Jelena, Agbaba Jasmina, Tubić Aleksandra
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
Materials (Basel). 2025 Aug 13;18(16):3799. doi: 10.3390/ma18163799.
This study investigates the adsorption behavior of 4-methylbenzylidene camphor (4-MBC), a persistent ultraviolet filter, onto microplastic fibers (MPFs) released from domestic textiles, under environmentally relevant conditions. Two types of MPFs were used: MPF A, a heterogeneous blend of synthetic and natural fibers, and MPF B, a uniform polyester source. Adsorption experiments were conducted in municipal wastewater, Danube River surface water, and laundry effluent. Kinetic data best fit the pseudo-second-order model (R > 0.95), and the Elovich model indicated chemisorption involving heterogeneous binding sites. MPF A exhibited superior adsorption capacities (qₑ = 85.4-90.1 µg/g) compared to MPF B (58.8-66.8 µg/g). Langmuir isotherms yielded maximum adsorption capacities of 204.9 µg/g for MPF A and 116.7 µg/g for MPF B (R = 0.929-0.977), while D-R isotherm energies (12.0-21.7 kJ/mol) confirmed specific interactions, such as π-π stacking and hydrogen bonding. Adsorption efficiency was highest in municipal wastewater (total organic carbon-TOC = 13.12 mg/L, electrical conductivity-EC = 1152 µS/cm), followed by laundry and surface waters. These findings emphasize the critical role of polymer composition and matrix complexity in pollutant transport, suggesting MPFs are effective transporters of hydrophobic micropollutants in aquatic systems.
本研究调查了持久性紫外线过滤剂4-甲基亚苄基樟脑（4-MBC）在环境相关条件下对家用纺织品释放的微塑料纤维（MPF）的吸附行为。使用了两种类型的MPF：MPF A，一种合成纤维与天然纤维的异质混合物；以及MPF B，一种均匀的聚酯来源。吸附实验在城市污水、多瑙河地表水和洗衣废水中进行。动力学数据最符合伪二级模型（R>0.95），并且埃洛维奇模型表明化学吸附涉及异质结合位点。与MPF B（58.8 - 66.8 µg/g）相比，MPF A表现出更高的吸附容量（qₑ = 85.4 - 90.1 µg/g）。朗缪尔等温线得出MPF A的最大吸附容量为204.9 µg/g，MPF B为116.7 µg/g（R = 0.929 - 0.977），而D-R等温线能量（12.0 - 21.7 kJ/mol）证实了特定的相互作用，如π-π堆积和氢键。吸附效率在城市污水（总有机碳-TOC = 13.12 mg/L，电导率-EC = 1152 µS/cm）中最高，其次是洗衣废水和地表水。这些发现强调了聚合物组成和基质复杂性在污染物迁移中的关键作用，表明MPF是水生系统中疏水性微污染物的有效运输载体。
