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Simultaneous arsenic and fluoride removal using {201}TiO2-ZrO2: Fabrication, characterization, and mechanism
Yu, Yaqin1; Zhou, Zhen2; Ding, Zhaoxia2; Zuo, Meimei2; Cheng, Jiemin3; Jing, Chuanyong1
2019-09-05
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume377Pages:267-273
AbstractThe coexistence of arsenic (As) and fluoride (F) in drinking water is an urgent environmental issue that causes increasing public concerns. The need for effective simultaneous removal of As and F has motived great research efforts. Herein, a novel (201}TiO2-ZrO2 composite was synthesized and its application mechanism was explored. Batch adsorption experiments show that the As(III), As(V), and F adsorption followed the pseudo-second order kinetics with the Langmuir adsorption capacity at 58.5, 21.6, and 13.1 mg/g, respectively. EXAFS and in situ ATR-FTIR results suggested that TiO2 surface sites were occupied by As(III) and As(V) in bidentate binuclear structures, and ZrO2 sites preferentially adsorbed As(III) and F in monodentate mononuclear configurations. This molecular structure obtained in the mono-adsorption system was integrated with the charge distribution multisite surface complexation model to accurately predict the As and F co-existing adsorption behaviors. The results in competitive adsorption, regeneration, and application evidenced that the {201}TiO2-ZrO2 composite is a promising adsorbent for simultaneous As and F removal.
Department环境化学与生态毒理学国家重点实验室
KeywordArsenic Fluoride Simultaneous removal {201}TiO2-ZrO2 composite EXAFS ATR-FTIR
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/42591
Collection环境化学与生态毒理学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Army Logist Univ, Dept Mil Facil, Chongqing 401311, Peoples R China
4.Shandong Normal Univ, Univ Geog & Environm, Jinan 250014, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Yu, Yaqin,Zhou, Zhen,Ding, Zhaoxia,et al. Simultaneous arsenic and fluoride removal using {201}TiO2-ZrO2: Fabrication, characterization, and mechanism[J]. JOURNAL OF HAZARDOUS MATERIALS,2019,377:267-273.
APA Yu, Yaqin,Zhou, Zhen,Ding, Zhaoxia,Zuo, Meimei,Cheng, Jiemin,&Jing, Chuanyong.(2019).Simultaneous arsenic and fluoride removal using {201}TiO2-ZrO2: Fabrication, characterization, and mechanism.JOURNAL OF HAZARDOUS MATERIALS,377,267-273.
MLA Yu, Yaqin,et al."Simultaneous arsenic and fluoride removal using {201}TiO2-ZrO2: Fabrication, characterization, and mechanism".JOURNAL OF HAZARDOUS MATERIALS 377(2019):267-273.
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