Adsorption of 2,4-dichiorophenoxyacetic acid by UiO-66-NH2 obtained in a green way

被引：24
作者：
Zhang, Xiaoting [1 ]
Han, Runping [1 ]
机构：
[1] Zhengzhou Univ, Coll Chem, 100 Ke Xue Rd, Zhengzhou 450001, Peoples R China
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2022年 / 29卷 / 60期
关键词：
Adsorption; 2,4-Dichlorophenoxyacetic acid; UiO-66-NH2; Regeneration; Isotherm; 2,4-DICHLOROPHENOXY ACETIC-ACID; ZR-MOFS; 2,4-D; REMOVAL; ISOTHERM; BIODEGRADATION; DEGRADATION; STABILITY; WATER;
D O I：
10.1007/s11356-022-22127-4
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, a zirconium elemental organic framework (UiO-66-NH2) was prepared by a green synthesis method and showed a good adsorption performance for removing 2,4-dichlorophenoxyacetic acid (2,4-D) from water. UiO-66-NH2 was analyzed by a variety of characterization methods and the adsorption properties of 2,4-D on UiO-66-NH2 were investigated by static adsorption experiments. The results showed that the adsorption of 2,4-D had a wide pH range (2-10) and good salt tolerance with the adsorption equilibrium time about 2 h. The maximum adsorption capacity from Langmuir was up to 652 mg g(-1) at 303 K. The isotherms can be described by Langmuir model and the adsorption kinetics was consistent with pseudo-secondorder kinetic model and Elovich model. The regeneration efficiency was still 95% after 5 cycles with 0.01 mol L-1 NaOH as desorption solution. The feasibility of practical application of UiO-66-NH2 was explored by simulating actual wastewater at different pH. UiO-66-NH2 is promising to remove 2,4-D from water.
引用
收藏
页码：90738 / 90751
页数：14
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