<br>一种新型生物吸附剂功能化支柱[5]芳烃：Cr（VI）的合成、表征和有效生物吸附,Science of the Total Environment

当前位置： X-MOL 学术 › Sci. Total Environ. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

一种新型生物吸附剂功能化支柱[5]芳烃：Cr（VI）的合成、表征和有效生物吸附
Science of the Total Environment ( IF 8.2 ) Pub Date : 2022-10-08 , DOI: 10.1016/j.scitotenv.2022.159312
Ali Bilgic ₁ , Aysel Cimen ₂ , Ahmed Nuri Kursunlu ₃

Affiliation

在有毒化学物质中，六价铬（Cr（VI））是最具致癌性和毒性的污染物之一，对人类和其他生物的健康有害。因此，去除 Cr（VI）对于保持我们的环境干净整洁非常重要。在这项研究中，使用基于孢粉素微胶囊的柱[5]芳烃制备了一种易于制作、廉价且天然的生物吸附材料（Sp-P[5]）来保护我们的环境。通过 FTIR、XRD 和 SEM 等技术成功表征了制备的生物吸附剂。生物吸附剂 Sp-P[5] 表现出开放的介孔结构，上面装饰着富含多胺的部分，从而增强了 Cr（VI）吸附。Cr（VI）离子的吸附行为从吸附动力学准二级定律和等温线模型完美地适应了不同温度下的 Langmuir 模型。Langmuir 模型适用于不同温度（298–328 K），Cr（VI）离子的最大吸附容量范围为 106.38 至 117.26 mg/g。热力学计算表明，Cr（VI）离子对 Sp-P[5] 的吸附是熵驱动的、吸热的和自发的。制备的生物吸附剂也应用于天然废水样品和不同的离子（铬酸盐和重铬酸盐）。吸附和解吸实验表明，8 次循环后，Sp-P[5] 对 Cr（VI）离子的吸附效率下降到 70.88 %。因此，合成的生物吸附剂 Sp-P[5] 在去除水体和自然废水系统中 Cr（VI）离子方面具有突出的潜力。

"点击查看英文标题和摘要"

A novel biosorbent functionalized pillar[5]arene: Synthesis, characterization and effective biosorption of Cr(VI)

Among toxic chemicals, hexavalent chromium (Cr(VI)) is one of the most carcinogenic and toxic pollutants that hostiles to the health of both humans and other living things. Therefore, the removal of Cr(VI) is of great importance to keep our environment clean and tidy. In this study, an easy-make, inexpensive, and natural biosorbent material (Sp-P[5]) was prepared to preserve our environment using a pillar[5]arene based-on sporopollenin microcapsule. The prepared biosorbent was successfully characterized by some techniques such as FTIR, XRD, and SEM. The biosorbent, Sp-P[5], exhibited an open mesoporous structure richly decorated with multi-amine-containing moieties resulting in enhanced Cr(VI) sorption. The sorption behavior of Cr(VI) ions is satisfactorily adapted from the sorption kinetics pseudo-second-order law and the isotherm models to the Langmuir model at different temperatures. The Langmuir model fits at different temperatures (298–328 K) and the maximum sorption capacities of the Cr(VI) ion ranged from 106.38 to 117.26 mg/g. The thermodynamic calculations reveal that the sorption of Cr(VI) ions on the Sp-P[5] is entropy-driven, endothermic, and spontaneous. The prepared biosorbent was also applied to the natural wastewater samples and different ions (chromate and dichromate). The sorption and desorption experiments showed that the sorption efficiency for Cr(VI) ions of the Sp-P[5] decreased to 70.88 % after 8 cycles. As result, the synthesized biosorbent, Sp-P[5], has outstanding potential in the removal of Cr(VI) ions from water bodies and natural wastewater systems.

更新日期：2022-10-08

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南