Enhanced removal efficiency towards azole fungicides from environmental water using a metal organic framework functionalized magnetic lignosulfonate

文献类型： 外文期刊

第一作者： Lu, Zhi-Heng

作者： Lu, Zhi-Heng;Zhou, Dong-Dong;Yang, Zhong-Hua;Senosy, Ibrahim Abdelhai;Liu, Xiao;Chen, Min;Zhuang, Lv-Yun;Lv, Dai-Zhu;Wang, Ming-Yue

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关键词： Lignosulfonate; Zeolitic imidazolate framework-8; Magnetic adsorbent; Azole fungicides; High performance liquid chromatography

期刊名称：SEPARATION AND PURIFICATION TECHNOLOGY （ 影响因子：9.136； 五年影响因子：8.258 ）

ISSN： 1383-5866

年卷期： 2021 年 279 卷

页码：

收录情况： SCI

摘要： In this work, a novel magnetic composite was synthesized by modifying lignosulfonate and zeolitic imidazolate framework-8 on Fe3O4 microspheres and was applied as an efficient adsorbent for removal of azole fungicides from water. The synthesized material was confirmed by a series of characterizations, exhibiting a high specific surface area (726.06 m(2) g(-1)) and a desirable magnetic property (37.5 emu g(-1)). Then, the main parameters affecting the adsorption performance were optimized and the maximum adsorption capacity for tebuconazole and imazalil was 25.10 mg g(-1) and 100.33 mg g(-1), respectively. Besides, the adsorption process was proved to be spontaneous, endothermic and feasible and consistent with the pseudo-second-order model, as well as Langmuir isotherm model could describe the adsorption process most accurately. Moreover, the adsorption process of azole fungicides onto Fe3O4@LS@ZIF-8 was mainly based on the mechanisms of covalent bonding, pi-pi interaction and hydrogen bonding. Finally, the adsorbent showed satisfactory removal efficiency for azole fungicides from four kinds of environmental water samples. In consequence, the synthesized material can simultaneously adsorb a variety of azole fungicides with high adsorption capacity, and cost-efficiently and readily available, compared with other adsorbents.

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