Silva Francisco Emanuel da, Spaolonzi Marcela Pires, Vieira Melissa G A, Pergher Sibele B C
Institute of Chemistry, Universidade Federal do Rio Grande do Norte, Senador Salgado Filho Av., 3000, Natal 59078-970, RN, Brazil.
School of Chemical Engineering, Universidade Estadual de Campinas, Albert Einstein Av., 500, Campinas 13083-872, SP, Brazil.
Molecules. 2025 Feb 24;30(5):1040. doi: 10.3390/molecules30051040.
SBA-15 is used in various processes, including adsorption, due to its textural properties, mesoporous channels, and silanol groups on the surface. These characteristics make it a promising material for the adsorption of emerging contaminants. This work evaluated the potential use of SBA-15 for the adsorption of bisphenol A (BPA), ciprofloxacin (CIP), and losartan (LS). This study showed that the material has highly ordered mesoporous channels and silanol groups on the surface, which influenced the affinity tests. SBA-15 exhibited the highest adsorption capacity (0.1317 mmol g) and removal percentage (60%) for CIP among the contaminants assessed. The adsorption mechanism was elucidated, revealing different interactions for each molecule. The kinetic curves for CIP adsorption indicated that the process reached saturation in 20 min, the equilibrium isotherm showed the highest adsorption at 15 °C, and the thermodynamic study shows an exothermic behavior and spontaneous process. The simplified batch design estimated that 27 g of SBA-15 is required to treat 10 L of 0.2 mmol L initial CIP concentration solution and achieve 90% adsorption removal. This material demonstrated satisfactory performance in absorbing emerging contaminants.
SBA - 15因其结构特性、介孔通道以及表面的硅醇基团而被用于包括吸附在内的各种过程。这些特性使其成为吸附新兴污染物的一种有前景的材料。这项工作评估了SBA - 15用于吸附双酚A（BPA）、环丙沙星（CIP）和氯沙坦（LS）的潜在用途。该研究表明，这种材料具有高度有序的介孔通道和表面硅醇基团，这影响了亲和力测试。在评估的污染物中，SBA - 15对CIP表现出最高的吸附容量（0.1317 mmol/g）和去除率（60%）。阐明了吸附机制，揭示了每个分子的不同相互作用。CIP吸附的动力学曲线表明该过程在20分钟内达到饱和，平衡等温线表明在15°C时吸附量最高，热力学研究表明这是一个放热行为和自发过程。简化的批次设计估计，处理10 L初始CIP浓度为0.2 mmol/L的溶液并实现90%的吸附去除需要27 g SBA - 15。这种材料在吸收新兴污染物方面表现出令人满意的性能。
