Department of Chemistry & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.
Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, 33011, Oviedo, Spain.
Environ Sci Pollut Res Int. 2021 Apr;28(15):18314-18327. doi: 10.1007/s11356-020-09314-x. Epub 2020 May 30.
The main goal of this work was to produce an easily recoverable waste-based magnetic activated carbon (MAC) for an efficient removal of the antiepileptic pharmaceutical carbamazepine (CBZ) from wastewater. For this purpose, the synthesis procedure was optimized and a material (MAC4) providing immediate recuperation from solution, remarkable adsorptive performance and relevant properties (specific surface area of 551 m g and saturation magnetization of 39.84 emu g) was selected for further CBZ kinetic and equilibrium adsorption studies. MAC4 presented fast CBZ adsorption rates and short equilibrium times (< 30-45 min) in both ultrapure water and wastewater. Equilibrium studies showed that MAC4 attained maximum adsorption capacities (q) of 68 ± 4 mg g in ultrapure water and 60 ± 3 mg g in wastewater, suggesting no significant interference of the aqueous matrix in the adsorption process. Overall, this work provides evidence of potential application of a waste-based MAC in the tertiary treatment of wastewaters. Graphical abstract.
这项工作的主要目标是生产一种易于回收的基于废物的磁性活性炭 (MAC)，以有效地从废水中去除抗癫痫药物卡马西平 (CBZ)。为此，优化了合成工艺，并选择了一种材料 (MAC4)，该材料可从溶液中立即恢复、具有显著的吸附性能和相关性质（比表面积为 551 m2/g，饱和磁化强度为 39.84 emu/g），用于进一步研究 CBZ 的动力学和平衡吸附。MAC4 在超纯水和废水中均表现出快速的 CBZ 吸附速率和较短的平衡时间（<30-45 分钟）。平衡研究表明，MAC4 在超纯水中的最大吸附容量（q）为 68 ± 4 mg/g，在废水中的最大吸附容量为 60 ± 3 mg/g，表明水基质在吸附过程中没有明显干扰。总的来说，这项工作为基于废物的 MAC 在废水的三级处理中的潜在应用提供了证据。
