School of Computer Science and Engineering, Xi'an Technological University, Xi'an, 710021, China.
Department of Petroleum and Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Sci Rep. 2021 Dec 29;11(1):24478. doi: 10.1038/s41598-021-04185-9.
In the present study, a mathematical modelling was developed to investigate ibuprofen adsorption from pharmaceutical wastewater into activated carbon and sonicated activated carbon. The developed model was dissolved based on the finite element method. Effect of different operating parameters including particle porosity and diameter as well as ibuprofen diffusion coefficient in solution on the amount of ibuprofen adsorption at different time point and position in the particle were evaluated. It was found good agreement between experimental values and modelling results in terms of ibuprofen adsorption as a function time. The 84.5% and 92.5% of maximum adsorption was achieved for the AC and SAC at the centre of particle after 150 min. Increasing the particle porosity and ibuprofen diffusion coefficient was improved the ibuprofen adsorption into the adsorbent. However, the particle diameter had negative impact on the system performance. There was a decrease in solute adsorption from 84.10 to 7.30 mg/g and from 106 to 15.73 mg/g for the AC and SAC respectively with increasing the particle radius from 173 to 500 µm. Finally, it was concluded that the particle specifications play important role in the adsorption process as it was observed considerable change in the amount of adsorption at different positions in the particle with changing the particle specifications.
在本研究中，开发了一种数学模型来研究布洛芬从制药废水中被活性炭和超声处理的活性炭吸附。所开发的模型基于有限元法进行了溶解。评估了不同操作参数（包括颗粒孔隙率和直径以及布洛芬在溶液中的扩散系数）对颗粒不同位置和不同时间点的布洛芬吸附量的影响。实验值和建模结果在布洛芬作为时间函数的吸附方面表现出良好的一致性。在 150 分钟后，颗粒中心处的 AC 和 SAC 分别达到了 84.5%和 92.5%的最大吸附量。增加颗粒孔隙率和布洛芬扩散系数可提高吸附剂对布洛芬的吸附。然而，颗粒直径对系统性能有负面影响。随着颗粒半径从 173µm 增加到 500µm，AC 和 SAC 的溶质吸附量分别从 84.10mg/g 减少到 7.30mg/g，从 106mg/g 减少到 15.73mg/g。最后，研究结果表明颗粒规格在吸附过程中起着重要作用，因为在颗粒的不同位置观察到吸附量有明显变化，这与颗粒规格的变化有关。
