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MIL-101(Fe)对废水中黄连素的去除：性能与机制

Removal of Berberine from Wastewater by MIL-101(Fe): Performance and Mechanism.

作者信息

Li Juan, Wang Liangjie, Liu Yongqiang, Zeng Ping, Wang Yan, Zhang Yizhang

机构信息

Chinese Research Academy of Environmental Sciences, Dayangfang 8, Chaoyang District, Beijing 100012, China.

Faculty of Engineering and Physical Sciences, University of Southampton, SO17 1BJ Southampton, United Kingdom.

出版信息

ACS Omega. 2020 Oct 21;5(43):27962-27971. doi: 10.1021/acsomega.0c03422. eCollection 2020 Nov 3.

DOI:10.1021/acsomega.0c03422
PMID:33163779
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7643153/
Abstract

The water contamination from pharmaceuticals and personal care products (PPCPs) has attracted worldwide attention in recent years because of its threat to public health. Berberine is a typical anti-inflammatory medicine and berberine wastewater is difficult to be treated due to its high toxicity, poor biodegradability, and high acidity. Metal-organic frameworks would be a good choice to remove berberine from wastewater due to its advantages of high specific surface area, ultrahigh porosity, and structural and functional tunability. In this study, MIL-101(Fe) was synthesized and used for the removal of berberine from water. Experimental results indicated that MIL-101(Fe) showed promising characteristics when berberine was adsorbed in acidic wastewater. The high concentration of chloride in berberine wastewater could promote the adsorption of berberine by MIL-101(Fe). Fitting of batch equilibrium data showed that MIL-101(Fe) had a maximum adsorption capacity of 163.93 mg/g for berberine removal at pH 7, and the berberine sorption on MIL-101(Fe) followed the pseudo-second-order model. Furthermore, the associate mechanism for berberine removal was proposed by characterizing the material and theoretical calculation. The X-ray power diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) analysis showed that no chemical reaction occurred during the adsorption of berberine by MIL-101(Fe). Also, the theoretical calculation results indicated that π-π interactions may play the main role in the adsorption of berberine onto MIL-101(Fe). The findings of this study suggest that MIL-101(Fe) is a promising sorbent for berberine removal from wastewater.

摘要

近年来，药物和个人护理产品（PPCPs）造成的水污染因其对公众健康的威胁而受到全球关注。黄连素是一种典型的抗炎药物，黄连素废水由于其高毒性、难生物降解性和高酸性而难以处理。金属有机框架因其具有高比表面积、超高孔隙率以及结构和功能可调节性等优点，将是从废水中去除黄连素的一个不错选择。在本研究中，合成了MIL-101(Fe)并用于从水中去除黄连素。实验结果表明，当黄连素吸附在酸性废水中时，MIL-101(Fe)表现出良好的特性。黄连素废水中的高浓度氯离子可促进MIL-101(Fe)对黄连素的吸附。批量平衡数据拟合表明，MIL-101(Fe)在pH值为7时对黄连素的最大吸附容量为163.93 mg/g，且黄连素在MIL-101(Fe)上的吸附遵循准二级模型。此外，通过对材料进行表征和理论计算，提出了去除黄连素的相关机制。X射线粉末衍射（XRD）、傅里叶变换红外光谱（FTIR）和X射线光电子能谱（XPS）分析表明，MIL-101(Fe)吸附黄连素的过程中未发生化学反应。同时，理论计算结果表明，π-π相互作用可能在黄连素吸附到MIL-101(Fe)上的过程中起主要作用。本研究结果表明，MIL-101(Fe)是一种很有前景的从废水中去除黄连素的吸附剂。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0bc/7643153/34d672e1dae8/ao0c03422_0011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0bc/7643153/74460bcb0a7e/ao0c03422_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0bc/7643153/3e7d2057626c/ao0c03422_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0bc/7643153/7d0bc26705c4/ao0c03422_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0bc/7643153/fa61c7173098/ao0c03422_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0bc/7643153/c014eb35706b/ao0c03422_0009.jpg
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