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
作者： Lu, Zhi-Heng 1 ; Lv, Dai-Zhu 2 ; Zhou, Dong-Dong 1 ; Yang, Zhong-Hua 1 ; Wang, Ming-Yue 2 ; Senosy, Ibrahim Abdelhai 1 ; Liu, Xiao 1 ; Chen, Min 1 ; Zhuang, Lv-Yun 1 ;
作者机构： 1.Huazhong Agr Univ, Dept Plant Protect, Coll Plant Sci & Technol, Wuhan 430070, Peoples R China
2.Chinese Acad Trop Agr Sci, Anal & Testing Ctr, Haikou 571101, Hainan, Peoples R China
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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