用栎角果制备的活性炭对阴离子和阳离子染料的吸附：动力学和热力学研究。

Adsorption of Anionic and Cationic Dyes on Activated Carbon Prepared from Oak Cupules: Kinetics and Thermodynamics Studies.

机构信息

Department of Chemistry, Faculty of Science, Isra University, Amman 11622, Jordan.

出版信息

Int J Environ Res Public Health. 2023 Feb 13;20(4):3280. doi: 10.3390/ijerph20043280.

In this study, activated carbon produced from oak cupules (ACOC) was prepared using chemical activation with HPO. ACOC is subsequently used as an adsorbent to facilitate the removal of an acidic dye, naphthol blue black (NBB), and basic dye crystal violet (CV) from aqueous solutions. The ACOC was characterized by FTIR spectroscopy, XRD, and SEM. The adsorption isotherm data fits well with the Langmuir model for NBB and CV. The kinetic models of adsorption of NBB and CV by ACOC were pseudo-first order and pseudo-second order, respectively. Thermodynamic parameters were evaluated and indicated that the adsorption of both dyes onto ACOC was endothermic and spontaneous. The adsorption capacity of ACOC reached 208 mg g for NBB and 658 mg g for CV. ACOC was shown to be a promising adsorbent for the removal of NBB and CV from aqueous solutions.

在这项研究中，使用 HPO 化学活化法制备了从橡木果壳（ACOC）中提取的活性炭。ACOC 随后被用作吸附剂，以促进从水溶液中去除酸性染料萘酚蓝黑（NBB）和碱性染料结晶紫（CV）。通过 FTIR 光谱、XRD 和 SEM 对 ACOC 进行了表征。ACOC 对 NBB 和 CV 的吸附等温线数据与 Langmuir 模型拟合良好。NBB 和 CV 吸附的动力学模型分别为准一级和准二级。评估了热力学参数，表明两种染料在 ACOC 上的吸附都是吸热和自发的。ACOC 的吸附容量分别达到 208 mg g 用于 NBB 和 658 mg g 用于 CV。ACOC 被证明是一种很有前途的吸附剂，可用于从水溶液中去除 NBB 和 CV。