Zlatković Milena, Kurtić Rialda, Pašti Igor A, Tasić Tamara, Milanković Vedran, Potkonjak Nebojša, Unterweger Christoph, Lazarević-Pašti Tamara
Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11158 Belgrade, Serbia.
Serbian Academy of Sciences and Arts, Kneza Mihaila 35, 11000 Belgrade, Serbia.
Materials (Basel). 2025 Jun 28;18(13):3072. doi: 10.3390/ma18133072.
This study explores the use of carbon materials derived from Nocino walnut liqueur pomace residue for the removal of chlorpyrifos, a widely used organophosphate pesticide, from water. Carbon adsorbents were synthesized from young walnut biomass under different thermal and chemical treatment conditions, and their structural and surface properties were characterized using BET analysis, FTIR, SEM-EDX, Boehm titration, and zeta potential measurements. The materials exhibited distinct textural and chemical features, including high surface areas and varied surface functionalizations. Batch adsorption studies revealed that the chlorpyrifos removal followed pseudo-second-order kinetics and was best described by the Freundlich and Langmuir isotherms, indicating a combination of pore filling and physisorption via π-π and van der Waals interactions. The highest adsorption capacity of 45.2 ± 0.2 mg g was achieved at 30 °C. Thermodynamic analysis confirmed the process to be endothermic, spontaneous, and entropy-driven, with desolvation effects enhancing the performance at elevated temperatures. Dynamic filtration experiments validated the practical applicability of the materials, while moderate reusability was achieved through ethanol-based regeneration. These findings demonstrate the potential of walnut pomace-derived carbons as low-cost, renewable, and effective adsorbents for sustainable water decontamination.
本研究探索了利用诺西诺核桃利口酒渣残余物衍生的碳材料从水中去除毒死蜱（一种广泛使用的有机磷农药）。在不同的热和化学处理条件下，由嫩核桃生物质合成了碳吸附剂，并使用BET分析、傅里叶变换红外光谱（FTIR）、扫描电子显微镜-能谱分析（SEM-EDX）、 Boehm滴定法和zeta电位测量对其结构和表面性质进行了表征。这些材料表现出独特的纹理和化学特征，包括高比表面积和多样的表面功能化。批量吸附研究表明，毒死蜱的去除遵循准二级动力学，用Freundlich和Langmuir等温线能最好地描述，表明通过π-π和范德华相互作用的孔隙填充和物理吸附相结合。在30°C时实现了最高吸附容量45.2±0.2 mg/g。热力学分析证实该过程是吸热、自发且由熵驱动的，去溶剂化效应在高温下提高了性能。动态过滤实验验证了这些材料的实际适用性，同时通过基于乙醇的再生实现了适度的可重复使用性。这些发现证明了核桃渣衍生碳作为低成本、可再生且有效的吸附剂用于可持续水净化的潜力。
