Chemical Engineering Department, Federal University of Santa Maria, UFSM, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil.
Department of Chemistry, Federal University of Santa Maria, UFSM, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil.
Environ Sci Pollut Res Int. 2018 Sep;25(25):24713-24725. doi: 10.1007/s11356-018-2525-x. Epub 2018 Jun 19.
Sonicated activated carbon (SAC) was developed and used to remove ibuprofen and ketoprofen from aqueous media by adsorption. A standard activated carbon sample (AC) was used as comparison. Both adsorbents were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), N adsorption isotherms (Brunauer, Emmett, and Teller (BET)), helium gas pycnometry, and scanning electron microscopy (SEM). In the adsorption study, kinetics, equilibrium, and thermodynamics were evaluated. SAC presented better characteristics than AC. Pseudo-second-order model was adequate to predict the kinetic curves. The isotherm data obeyed the Sips model. Thermodynamic results revealed a spontaneous and endothermic process, where physisorption was involved. The maximum adsorption capacities of SAC were 134.5 and 89.2 mg g for ibuprofen and ketoprofen, respectively. For AC, the maximum adsorption capacities were 115.1 and 79.1 mg g for ibuprofen and ketoprofen, respectively. The sonication technique presented great potential to improve the AC characteristics, generating a promising material (SAC) for ibuprofen and ketoprofen adsorption.
超声波处理的活性炭 (SAC) 被开发并用于通过吸附从水介质中去除布洛芬和酮洛芬。标准活性炭样品 (AC) 被用作比较。两种吸附剂均通过 X 射线衍射 (XRD)、傅里叶变换红外光谱 (FT-IR)、N 吸附等温线 (Brunauer、Emmett 和 Teller (BET))、氦气比重瓶法和扫描电子显微镜 (SEM) 进行了表征。在吸附研究中，评估了动力学、平衡和热力学。SAC 呈现出比 AC 更好的特性。准二级模型足以预测动力学曲线。等温线数据符合 Sips 模型。热力学结果表明这是一个自发的吸热过程，涉及物理吸附。SAC 的最大吸附容量分别为 134.5 和 89.2 mg g 用于布洛芬和酮洛芬。对于 AC，最大吸附容量分别为 115.1 和 79.1 mg g 用于布洛芬和酮洛芬。超声处理技术具有显著改善 AC 特性的潜力，为布洛芬和酮洛芬的吸附生成了一种有前途的材料 (SAC)。
