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Article

Effective Removal of Humic Acid by Zr-MOFs with Surface Modification

School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
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Author to whom correspondence should be addressed.
Academic Editors: Weihua Zhao, Kai Wang and Shanyun Wang
Water 2022, 14(11), 1800; https://doi.org/10.3390/w14111800
Received: 27 April 2022 / Revised: 25 May 2022 / Accepted: 25 May 2022 / Published: 2 June 2022
Humic acid (HA) in makeup water is one of the important safety issues of high-parameter power plants. Herein, the Zr-based metal organic frameworks (Zr-MOFs) were applied to remove humic acid in water. The mesoporous and active sites of Zr-MOFs were controlled by different ratios of ligands to increase the adsorption of HA. The maximum adsorption capacity was 150.15 mg g−1. The morphology and adsorption properties of the Zr-MOFs were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), surface charge, Fourier Transform infrared (FT-IR), N2 adsorption-desorption and adsorption test. The adsorption process of HA accorded with the pseudo-second-order kinetics, while the adsorption isotherm conformed to the Langmuir model and the adsorption was proved to be a spontaneous and endothermic process. Physical adsorption by the mesoporous materials and the hydrogen bonding interactions between the Zr-MOFs and HA were the driving forces of HA adsorption. These results provided useful information for the effective removal of HA and enhanced our understanding of the adsorption mechanism of HA on Zr-MOFs. View Full-Text
Keywords: Zr-MOFs; humic acid; mesoporous; hydrogen bonding; high adsorption capacity Zr-MOFs; humic acid; mesoporous; hydrogen bonding; high adsorption capacity
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MDPI and ACS Style

Jiang, Y.; Wang, Z.; Zhu, Z.; He, M.; Zhou, P. Effective Removal of Humic Acid by Zr-MOFs with Surface Modification. Water 2022, 14, 1800. https://doi.org/10.3390/w14111800

AMA Style

Jiang Y, Wang Z, Zhu Z, He M, Zhou P. Effective Removal of Humic Acid by Zr-MOFs with Surface Modification. Water. 2022; 14(11):1800. https://doi.org/10.3390/w14111800

Chicago/Turabian Style

Jiang, Yuankang, Zhenggang Wang, Zhiping Zhu, Mingpeng He, and Pan Zhou. 2022. "Effective Removal of Humic Acid by Zr-MOFs with Surface Modification" Water 14, no. 11: 1800. https://doi.org/10.3390/w14111800

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