Department of Chemistry, College of Science and Arts, Najran University, P.O. Box, 1988, Najran, 11001, Saudi Arabia.
Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia.
Environ Sci Pollut Res Int. 2024 Jun;31(28):40257-40268. doi: 10.1007/s11356-023-28134-3. Epub 2023 Jun 9.
Since the release of antibiotics as emerging contaminants into the environmental water can cause severe difficulties for human health, their removal from the water is necessary. In this regard, a novel environmentally friendly adsorbent was developed based on green sporopollenin, which was magnetized and modified with magnesium oxide nanoparticles to produce MSP@MgO nanocomposite. The newly developed adsorbent was applied to remove tetracycline antibiotic (TC) from aqueous media. The surface morphology of the MSP@MgO nanocomposite was characterized using FTIR, XRD, EDX, and SEM techniques. The effective parameters of the removal process were studied, and it was confirmed that the chemical structure of TC was highly affected by changes in pH solution due to different pKa; therefore, the results showed that pH 5 was the optimum. Also, the maximum sorption capacity of MSP@MgO for TC for adsorption was obtained at 109.89 mg.g. In addition, the adsorption models were investigated, and the process was fitted with the Langmuir model. Thermodynamic parameters showed that the process was spontaneous (ΔG < 0), endothermic (ΔH > 0) and the adsorption mechanism was following the physisorption mechanism at room temperature.
由于抗生素作为新兴污染物释放到环境水中会对人类健康造成严重危害，因此需要将其从水中去除。在这方面，基于绿色孢粉素，开发了一种新型的环保吸附剂，并用氧化镁纳米粒子对其进行磁化和修饰，以制备 MSP@MgO 纳米复合材料。新开发的吸附剂用于从水介质中去除四环素抗生素 (TC)。使用 FTIR、XRD、EDX 和 SEM 技术对 MSP@MgO 纳米复合材料的表面形态进行了表征。研究了去除过程的有效参数，并证实 TC 的化学结构由于不同的 pKa 而受到 pH 溶液变化的高度影响；因此，结果表明 pH 5 是最佳值。此外，MSP@MgO 对 TC 的最大吸附容量为 109.89mg.g。此外，还研究了吸附模型，该过程符合 Langmuir 模型。热力学参数表明该过程是自发的（ΔG<0），吸热的（ΔH>0），吸附机制是在室温下遵循物理吸附机制。
