吸附
双氯芬酸钠
三甲胺
水溶液
朗缪尔吸附模型
材料科学
核化学
双氯芬酸
色谱法
化学
有机化学
生物化学
作者
Hadi Shayesteh,Reza Nodehi,Ahmad Rahbar-Kelishami
标识
DOI:10.1016/j.surfin.2020.100615
摘要
The importance of the adsorption process and growth demand for using of cost-effective methods has increased the use of low-cost inorganic sorbents. In this study, a batch system was used to remove diclofenac sodium (DF) using pumice modified with trimethylamine (TMAP). Analysis of FTIR, XRF, SEM and BET were used for determining the adsorbent properties. Adsorbent dosage (0.1-1.5 g/L), contact time (0-90 min), solution pH (3-11) and initial DF concentration (0-1000 mg/L), parameters affecting the adsorption process, were investigated. Results of the laboratory data fitted using six isotherm models and the obtained results of Temkin model (R2=0.9762) is better described how the equilibrium results changes. Also, Langmuir isotherm showed that the amount of maximum adsorption capacity at pH = 3, T= 25°C, DF concentration of 1000 mg/L and contact time of 90 min using adsorbent dosage 1.5 g/L was 387.25 mg/g. The pseudo-second-order kinetic model (R2=0.9997) showed better description of the experimental data. Finally, the results showed that modified pumice was able to remove diclofenac in aqueous solution as a low-cost adsorbent.
科研通智能强力驱动
Strongly Powered by AbleSci AI