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Cr(VI) Adsorption from Aqueous Solution by UiO-66 Modified Corncob

文献类型：期刊论文

作者Xie, Hongzhong1,2; Wan, Yanlei1,3; Chen, Hao1,4; Xiong, Guangcheng1; Wang, Lingqing5; Xu, Qi1; Li, Xiang1; Zhou, Qiuhong1
刊名SUSTAINABILITY
出版日期2021-12-01
卷号13期号:23页码:16
关键词UiO-66 corncob adsorption Cr(VI) agricultural wastes
DOI10.3390/su132312962
通讯作者Zhou, Qiuhong(zhouqiuhong@cjwsjy.com.cn)
英文摘要To adsorb hexavalent chromium (Cr(VI)) in polluted water, this paper prepared a UiO-66 (Zr6O4(OH)(4)(BDC)(12)) modified granular corncob composite adsorbent by hydrothermal method with in situ loading of UiO-66 on pretreated corncob particles. The physicochemical properties of the synthesized samples were characterized. Batch adsorption experiments were conducted to investigate the adsorption process of aqueous Cr(VI) under various conditions (different ionic strength, pH and co-existing anions). The results showed that UiO-66 was successfully loaded on the modified corncob particles. The isothermal adsorption data of Cr(VI) adsorption by the UiO-66 modified corncob fit well with the Langmuir model with the maximum adsorption capacity of Cr(VI) on UiO-66@Corn(+) being 90.04 mg/g. UiO-66 loading could increase Cr(VI) adsorption capacity of Corn(+). The kinetic study showed that the equilibrium time for Cr(VI) adsorption on UiO-66 modified corncob was about 180 min and the kinetic data followed the pseudo-secondary kinetic model. The Cr(VI) adsorption capacity on UiO-66@Corn(+) decreased with the increasing solution pH, and the optimum pH range was 4-6. The ionic strength has little effect on the Cr(VI) adsorption capacity, but the coexistence of CO32-, SO42- and PO43- in the solution could significantly decrease the equilibrium adsorption capacity of Cr(VI). The adsorption mechanism analysis showed that Cr(VI) was adsorbed on the surface of adsorbents through electrostatic attraction and was reduced further to the less toxic Cr(III) by the electron donor on the surface of adsorbent. The electrostatic interaction was the main force affecting the adsorption of Cr(VI) by UiO-66. UiO-66@Corn(+) had an excellent removal efficiency of Cr(VI) and excellent reusability. UiO-66@Corn(+) could effectively remove Cr(VI) from water and have a promising application.
WOS关键词METAL-ORGANIC FRAMEWORKS ; ENHANCED ADSORPTION ; HEXAVALENT CHROMIUM ; AGRICULTURAL WASTE ; FACILE SYNTHESIS ; BISPHENOL-A ; CR-VI ; REMOVAL ; COMPOSITE ; KINETICS
资助项目Key Research and Development Program of Hubei Province[2020BCA073] ; Key Research and Development Program of Hubei Province[SF-202009] ; Independent Innovation Research Program of Changjiang Survey, Planning, Design and Research Co., Ltd.[CX2020Z23] ; China Postdoctoral Science Foundation[2021M692753]
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000735140000001
出版者MDPI
资助机构Key Research and Development Program of Hubei Province ; Independent Innovation Research Program of Changjiang Survey, Planning, Design and Research Co., Ltd. ; China Postdoctoral Science Foundation
源URL[http://ir.igsnrr.ac.cn/handle/311030/168949]  
专题中国科学院地理科学与资源研究所
通讯作者Zhou, Qiuhong
作者单位1.Changjiang Inst Survey Planning Design & Res Co L, Wuhan 430010, Peoples R China
2.Hubei Prov Engn Res Ctr Comprehens Water Environm, Wuhan 430010, Peoples R China
3.Minist Water Resources, Key Lab Changjiang Regulat & Protect, Wuhan 430010, Peoples R China
4.Hubei Key Lab Basin Water Secur, Wuhan 430010, Peoples R China
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Xie, Hongzhong,Wan, Yanlei,Chen, Hao,et al. Cr(VI) Adsorption from Aqueous Solution by UiO-66 Modified Corncob[J]. SUSTAINABILITY,2021,13(23):16.
APA Xie, Hongzhong.,Wan, Yanlei.,Chen, Hao.,Xiong, Guangcheng.,Wang, Lingqing.,...&Zhou, Qiuhong.(2021).Cr(VI) Adsorption from Aqueous Solution by UiO-66 Modified Corncob.SUSTAINABILITY,13(23),16.
MLA Xie, Hongzhong,et al."Cr(VI) Adsorption from Aqueous Solution by UiO-66 Modified Corncob".SUSTAINABILITY 13.23(2021):16.

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来源：地理科学与资源研究所

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